diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9fd2262..6f239d4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -55,6 +55,7 @@ jobs:
demo:
- spring-boot-3.4-maven
- spring-boot-3.5-maven
+ - spring-boot-4.0-maven
# - spring-boot-3.5-maven-failsafe-parallel
# - spring-boot-3.5-maven-junit-parallel
diff --git a/.gitignore b/.gitignore
index 4f70dc3..2109b75 100644
--- a/.gitignore
+++ b/.gitignore
@@ -122,7 +122,7 @@ $RECYCLE.BIN/
PROMPTS.md
VIDEO.md
SCRIPT.md
-
+MARKETING.md
### JS ###
coverage/
diff --git a/demo/spring-boot-3.5-maven/pom.xml b/demo/spring-boot-3.5-maven/pom.xml
index 834398d..2e0e053 100644
--- a/demo/spring-boot-3.5-maven/pom.xml
+++ b/demo/spring-boot-3.5-maven/pom.xml
@@ -35,6 +35,11 @@
spring-boot-starter-web
+
+ org.springframework.boot
+ spring-boot-starter-actuator
+
+
org.springframework.boot
spring-boot-starter-data-jpa
diff --git a/demo/spring-boot-3.5-maven/src/main/resources/application.properties b/demo/spring-boot-3.5-maven/src/main/resources/application.properties
index 5afd1e6..2fc3dba 100644
--- a/demo/spring-boot-3.5-maven/src/main/resources/application.properties
+++ b/demo/spring-boot-3.5-maven/src/main/resources/application.properties
@@ -9,3 +9,5 @@ spring.jpa.hibernate.ddl-auto=create-drop
spring.jpa.show-sql=false
# H2 Console (for development)
spring.h2.console.enabled=true
+
+management.server.port=9090
diff --git a/demo/spring-boot-4.0-maven/.mvn/wrapper/maven-wrapper.properties b/demo/spring-boot-4.0-maven/.mvn/wrapper/maven-wrapper.properties
new file mode 100644
index 0000000..2f94e61
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1,19 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+wrapperVersion=3.3.2
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.10/apache-maven-3.9.10-bin.zip
diff --git a/demo/spring-boot-4.0-maven/README.md b/demo/spring-boot-4.0-maven/README.md
new file mode 100644
index 0000000..f99a53a
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/README.md
@@ -0,0 +1,68 @@
+# Spring Test Insight Demo
+
+This demo project showcases the Spring Test Insight Extension in action.
+
+## Overview
+
+This is a simple Spring Boot application with:
+
+- REST API for user management
+- JPA/Hibernate with H2 in-memory database
+- Comprehensive test suite demonstrating Spring Test context caching
+
+## Running the Tests
+
+First, install the Spring Test Insight Extension to your local Maven repository:
+
+```bash
+cd ../spring-test-profiler-extension
+./mvnw clean install
+```
+
+Then run the demo tests:
+
+```bash
+cd ../demo
+mvn clean test
+```
+
+## Viewing the Test Report
+
+After running the tests, the Spring Test Insight report will be generated at:
+
+- `target/spring-test-profiler/latest.html`
+
+Open this file in a web browser to see:
+
+- Test execution summary
+- Spring context caching statistics
+- Cache hit/miss rates
+- Individual test results with execution times
+- Failed test details with stack traces
+
+## Test Structure
+
+The demo includes various types of tests:
+
+- `UserRepositoryTest` - @DataJpaTest for repository layer
+- `UserServiceTest` - Unit tests with mocks
+- `UserControllerTest` - @WebMvcTest for REST controllers
+- `UserIntegrationTest` - Full @SpringBootTest integration tests
+
+Each test class uses different Spring configurations, demonstrating how the extension tracks context caching across
+different test types.
+
+## Key Features Demonstrated
+
+1. **Context Caching Visualization**: See which test classes share Spring contexts
+2. **Performance Metrics**: Track context load times and test execution durations
+3. **Cache Efficiency**: Monitor cache hit rates to optimize test suite performance
+4. **Test Results**: Comprehensive view of passed, failed, and skipped tests
+
+## Tips for Optimization
+
+Based on the report, you can:
+
+- Identify tests that create new contexts unnecessarily
+- Group tests with similar configurations to improve cache reuse
+- Find slow context initialization that impacts test performance
diff --git a/demo/spring-boot-4.0-maven/mvnw b/demo/spring-boot-4.0-maven/mvnw
new file mode 100755
index 0000000..19529dd
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/mvnw
@@ -0,0 +1,259 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Apache Maven Wrapper startup batch script, version 3.3.2
+#
+# Optional ENV vars
+# -----------------
+# JAVA_HOME - location of a JDK home dir, required when download maven via java source
+# MVNW_REPOURL - repo url base for downloading maven distribution
+# MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+# MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output
+# ----------------------------------------------------------------------------
+
+set -euf
+[ "${MVNW_VERBOSE-}" != debug ] || set -x
+
+# OS specific support.
+native_path() { printf %s\\n "$1"; }
+case "$(uname)" in
+CYGWIN* | MINGW*)
+ [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")"
+ native_path() { cygpath --path --windows "$1"; }
+ ;;
+esac
+
+# set JAVACMD and JAVACCMD
+set_java_home() {
+ # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched
+ if [ -n "${JAVA_HOME-}" ]; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ]; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD="$JAVA_HOME/jre/sh/java"
+ JAVACCMD="$JAVA_HOME/jre/sh/javac"
+ else
+ JAVACMD="$JAVA_HOME/bin/java"
+ JAVACCMD="$JAVA_HOME/bin/javac"
+
+ if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then
+ echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2
+ echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2
+ return 1
+ fi
+ fi
+ else
+ JAVACMD="$(
+ 'set' +e
+ 'unset' -f command 2>/dev/null
+ 'command' -v java
+ )" || :
+ JAVACCMD="$(
+ 'set' +e
+ 'unset' -f command 2>/dev/null
+ 'command' -v javac
+ )" || :
+
+ if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then
+ echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2
+ return 1
+ fi
+ fi
+}
+
+# hash string like Java String::hashCode
+hash_string() {
+ str="${1:-}" h=0
+ while [ -n "$str" ]; do
+ char="${str%"${str#?}"}"
+ h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296))
+ str="${str#?}"
+ done
+ printf %x\\n $h
+}
+
+verbose() { :; }
+[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; }
+
+die() {
+ printf %s\\n "$1" >&2
+ exit 1
+}
+
+trim() {
+ # MWRAPPER-139:
+ # Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds.
+ # Needed for removing poorly interpreted newline sequences when running in more
+ # exotic environments such as mingw bash on Windows.
+ printf "%s" "${1}" | tr -d '[:space:]'
+}
+
+# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties
+while IFS="=" read -r key value; do
+ case "${key-}" in
+ distributionUrl) distributionUrl=$(trim "${value-}") ;;
+ distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;;
+ esac
+done <"${0%/*}/.mvn/wrapper/maven-wrapper.properties"
+[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in ${0%/*}/.mvn/wrapper/maven-wrapper.properties"
+
+case "${distributionUrl##*/}" in
+maven-mvnd-*bin.*)
+ MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/
+ case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in
+ *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;;
+ :Darwin*x86_64) distributionPlatform=darwin-amd64 ;;
+ :Darwin*arm64) distributionPlatform=darwin-aarch64 ;;
+ :Linux*x86_64*) distributionPlatform=linux-amd64 ;;
+ *)
+ echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2
+ distributionPlatform=linux-amd64
+ ;;
+ esac
+ distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip"
+ ;;
+maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;;
+*) MVN_CMD="mvn${0##*/mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;;
+esac
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-,maven-mvnd--}/
+[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}"
+distributionUrlName="${distributionUrl##*/}"
+distributionUrlNameMain="${distributionUrlName%.*}"
+distributionUrlNameMain="${distributionUrlNameMain%-bin}"
+MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}"
+MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")"
+
+exec_maven() {
+ unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || :
+ exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD"
+}
+
+if [ -d "$MAVEN_HOME" ]; then
+ verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+ exec_maven "$@"
+fi
+
+case "${distributionUrl-}" in
+*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;;
+*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;;
+esac
+
+# prepare tmp dir
+if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then
+ clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; }
+ trap clean HUP INT TERM EXIT
+else
+ die "cannot create temp dir"
+fi
+
+mkdir -p -- "${MAVEN_HOME%/*}"
+
+# Download and Install Apache Maven
+verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+verbose "Downloading from: $distributionUrl"
+verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+# select .zip or .tar.gz
+if ! command -v unzip >/dev/null; then
+ distributionUrl="${distributionUrl%.zip}.tar.gz"
+ distributionUrlName="${distributionUrl##*/}"
+fi
+
+# verbose opt
+__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR=''
+[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v
+
+# normalize http auth
+case "${MVNW_PASSWORD:+has-password}" in
+'') MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;;
+esac
+
+if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then
+ verbose "Found wget ... using wget"
+ wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl"
+elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then
+ verbose "Found curl ... using curl"
+ curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl"
+elif set_java_home; then
+ verbose "Falling back to use Java to download"
+ javaSource="$TMP_DOWNLOAD_DIR/Downloader.java"
+ targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName"
+ cat >"$javaSource" <<-END
+ public class Downloader extends java.net.Authenticator
+ {
+ protected java.net.PasswordAuthentication getPasswordAuthentication()
+ {
+ return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() );
+ }
+ public static void main( String[] args ) throws Exception
+ {
+ setDefault( new Downloader() );
+ java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() );
+ }
+ }
+ END
+ # For Cygwin/MinGW, switch paths to Windows format before running javac and java
+ verbose " - Compiling Downloader.java ..."
+ "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java"
+ verbose " - Running Downloader.java ..."
+ "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")"
+fi
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+if [ -n "${distributionSha256Sum-}" ]; then
+ distributionSha256Result=false
+ if [ "$MVN_CMD" = mvnd.sh ]; then
+ echo "Checksum validation is not supported for maven-mvnd." >&2
+ echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+ exit 1
+ elif command -v sha256sum >/dev/null; then
+ if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c >/dev/null 2>&1; then
+ distributionSha256Result=true
+ fi
+ elif command -v shasum >/dev/null; then
+ if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then
+ distributionSha256Result=true
+ fi
+ else
+ echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2
+ echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2
+ exit 1
+ fi
+ if [ $distributionSha256Result = false ]; then
+ echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2
+ echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2
+ exit 1
+ fi
+fi
+
+# unzip and move
+if command -v unzip >/dev/null; then
+ unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip"
+else
+ tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar"
+fi
+printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/mvnw.url"
+mv -- "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME"
+
+clean || :
+exec_maven "$@"
diff --git a/demo/spring-boot-4.0-maven/mvnw.cmd b/demo/spring-boot-4.0-maven/mvnw.cmd
new file mode 100644
index 0000000..249bdf3
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/mvnw.cmd
@@ -0,0 +1,149 @@
+<# : batch portion
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements. See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership. The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License. You may obtain a copy of the License at
+@REM
+@REM http://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied. See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Apache Maven Wrapper startup batch script, version 3.3.2
+@REM
+@REM Optional ENV vars
+@REM MVNW_REPOURL - repo url base for downloading maven distribution
+@REM MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven
+@REM MVNW_VERBOSE - true: enable verbose log; others: silence the output
+@REM ----------------------------------------------------------------------------
+
+@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0)
+@SET __MVNW_CMD__=
+@SET __MVNW_ERROR__=
+@SET __MVNW_PSMODULEP_SAVE=%PSModulePath%
+@SET PSModulePath=
+@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @(
+ IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B)
+)
+@SET PSModulePath=%__MVNW_PSMODULEP_SAVE%
+@SET __MVNW_PSMODULEP_SAVE=
+@SET __MVNW_ARG0_NAME__=
+@SET MVNW_USERNAME=
+@SET MVNW_PASSWORD=
+@IF NOT "%__MVNW_CMD__%"=="" (%__MVNW_CMD__% %*)
+@echo Cannot start maven from wrapper >&2 && exit /b 1
+@GOTO :EOF
+: end batch / begin powershell #>
+
+$ErrorActionPreference = "Stop"
+if ($env:MVNW_VERBOSE -eq "true") {
+ $VerbosePreference = "Continue"
+}
+
+# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties
+$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl
+if (!$distributionUrl) {
+ Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties"
+}
+
+switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) {
+ "maven-mvnd-*" {
+ $USE_MVND = $true
+ $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip"
+ $MVN_CMD = "mvnd.cmd"
+ break
+ }
+ default {
+ $USE_MVND = $false
+ $MVN_CMD = $script -replace '^mvnw','mvn'
+ break
+ }
+}
+
+# apply MVNW_REPOURL and calculate MAVEN_HOME
+# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-,maven-mvnd--}/
+if ($env:MVNW_REPOURL) {
+ $MVNW_REPO_PATTERN = if ($USE_MVND) { "/org/apache/maven/" } else { "/maven/mvnd/" }
+ $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace '^.*'+$MVNW_REPO_PATTERN,'')"
+}
+$distributionUrlName = $distributionUrl -replace '^.*/',''
+$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$',''
+$MAVEN_HOME_PARENT = "$HOME/.m2/wrapper/dists/$distributionUrlNameMain"
+if ($env:MAVEN_USER_HOME) {
+ $MAVEN_HOME_PARENT = "$env:MAVEN_USER_HOME/wrapper/dists/$distributionUrlNameMain"
+}
+$MAVEN_HOME_NAME = ([System.Security.Cryptography.MD5]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join ''
+$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME"
+
+if (Test-Path -Path "$MAVEN_HOME" -PathType Container) {
+ Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME"
+ Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
+ exit $?
+}
+
+if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) {
+ Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl"
+}
+
+# prepare tmp dir
+$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile
+$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir"
+$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null
+trap {
+ if ($TMP_DOWNLOAD_DIR.Exists) {
+ try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+ catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+ }
+}
+
+New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null
+
+# Download and Install Apache Maven
+Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..."
+Write-Verbose "Downloading from: $distributionUrl"
+Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName"
+
+$webclient = New-Object System.Net.WebClient
+if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) {
+ $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD)
+}
+[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null
+
+# If specified, validate the SHA-256 sum of the Maven distribution zip file
+$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum
+if ($distributionSha256Sum) {
+ if ($USE_MVND) {
+ Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties."
+ }
+ Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash
+ if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) {
+ Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property."
+ }
+}
+
+# unzip and move
+Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null
+Rename-Item -Path "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" -NewName $MAVEN_HOME_NAME | Out-Null
+try {
+ Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null
+} catch {
+ if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) {
+ Write-Error "fail to move MAVEN_HOME"
+ }
+} finally {
+ try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null }
+ catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" }
+}
+
+Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD"
diff --git a/demo/spring-boot-4.0-maven/pom.xml b/demo/spring-boot-4.0-maven/pom.xml
new file mode 100644
index 0000000..8b60975
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/pom.xml
@@ -0,0 +1,111 @@
+
+
+ 4.0.0
+
+
+ org.springframework.boot
+ spring-boot-starter-parent
+ 4.0.0-M2
+
+
+
+ digital.pragmatech
+ spring-test-profiler-demo-spring-boot-4.0-maven
+ 0.0.1
+ jar
+
+ Spring Test Insight Demo - Spring Boot 4.0
+ Demo project for Spring Profiler Insight Extension
+
+
+ 21
+
+
+
+
+ org.springframework.boot
+ spring-boot-starter
+
+
+
+ org.springframework.boot
+ spring-boot-starter-webmvc
+
+
+
+ org.springframework.boot
+ spring-boot-starter-webclient
+
+
+
+ org.springframework.boot
+ spring-boot-starter-restclient
+
+
+
+ org.springframework.boot
+ spring-boot-starter-actuator
+
+
+
+ org.springframework.boot
+ spring-boot-starter-data-jpa
+
+
+
+ com.h2database
+ h2
+ runtime
+
+
+
+
+ org.springframework.boot
+ spring-boot-starter-test
+ test
+
+
+
+
+ digital.pragmatech.testing
+ spring-test-profiler
+ 0.0.12-SNAPSHOT
+ test
+
+
+
+
+
+
+ org.springframework.boot
+ spring-boot-maven-plugin
+
+
+ org.apache.maven.plugins
+ maven-compiler-plugin
+ 3.13.0
+
+
+ org.apache.maven.plugins
+ maven-surefire-plugin
+ 3.5.3
+
+
+ org.apache.maven.plugins
+ maven-failsafe-plugin
+ 3.5.3
+
+
+
+ integration-test
+ verify
+
+
+
+
+
+
+
diff --git a/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/DemoApplication.java b/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/DemoApplication.java
new file mode 100644
index 0000000..b04e05f
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/DemoApplication.java
@@ -0,0 +1,32 @@
+package digital.pragmatech.demo;
+
+import java.util.Arrays;
+import java.util.Map;
+
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.ApplicationContext;
+
+@SpringBootApplication
+public class DemoApplication implements CommandLineRunner {
+
+ private final ApplicationContext context;
+
+ public DemoApplication(ApplicationContext context) {
+ this.context = context;
+ }
+
+ public static void main(String[] args) {
+ SpringApplication.run(DemoApplication.class, args);
+ }
+
+ @Override
+ public void run(String... args) throws Exception {
+ String[] beanNames = context.getBeanDefinitionNames();
+ System.out.println(Map.of(
+ "count", beanNames.length,
+ "beans", Arrays.asList(beanNames)
+ ));
+ }
+}
diff --git a/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/controller/BookController.java b/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/controller/BookController.java
new file mode 100644
index 0000000..bd70a16
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/controller/BookController.java
@@ -0,0 +1,36 @@
+package digital.pragmatech.demo.controller;
+
+import digital.pragmatech.demo.entity.Book;
+import digital.pragmatech.demo.service.BookService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/books")
+public class BookController {
+
+ @Autowired
+ private BookService bookService;
+
+ @PostMapping
+ public ResponseEntity createBook(@RequestBody Book book) {
+ Book createdBook = bookService.createBook(book);
+ return new ResponseEntity<>(createdBook, HttpStatus.CREATED);
+ }
+
+ @GetMapping
+ public ResponseEntity getAllBooks() {
+ List books = bookService.findAll();
+ return ResponseEntity.ok(books.toArray(new Book[0]));
+ }
+
+ @GetMapping("/count")
+ public ResponseEntity getBookCount() {
+ long count = bookService.count();
+ return ResponseEntity.ok(count);
+ }
+}
diff --git a/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/entity/Book.java b/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/entity/Book.java
new file mode 100644
index 0000000..2ff8274
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/entity/Book.java
@@ -0,0 +1,120 @@
+package digital.pragmatech.demo.entity;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EnumType;
+import jakarta.persistence.Enumerated;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "books")
+public class Book {
+
+ @Id
+ @GeneratedValue(strategy = GenerationType.IDENTITY)
+ private Long id;
+
+ @Column(nullable = false)
+ private String title;
+
+ @Column(nullable = false)
+ private String author;
+
+ @Column(unique = true, nullable = false)
+ private String isbn;
+
+ @Column(precision = 10, scale = 2)
+ private BigDecimal price;
+
+ @Column(name = "publication_date")
+ private LocalDate publicationDate;
+
+ @Enumerated(EnumType.STRING)
+ private BookCategory category;
+
+ @Column(columnDefinition = "TEXT")
+ private String description;
+
+ // Constructors
+ public Book() {
+ }
+
+ public Book(String title, String author, String isbn, BigDecimal price, BookCategory category) {
+ this.title = title;
+ this.author = author;
+ this.isbn = isbn;
+ this.price = price;
+ this.category = category;
+ }
+
+ // Getters and Setters
+ public Long getId() {
+ return id;
+ }
+
+ public void setId(Long id) {
+ this.id = id;
+ }
+
+ public String getTitle() {
+ return title;
+ }
+
+ public void setTitle(String title) {
+ this.title = title;
+ }
+
+ public String getAuthor() {
+ return author;
+ }
+
+ public void setAuthor(String author) {
+ this.author = author;
+ }
+
+ public String getIsbn() {
+ return isbn;
+ }
+
+ public void setIsbn(String isbn) {
+ this.isbn = isbn;
+ }
+
+ public BigDecimal getPrice() {
+ return price;
+ }
+
+ public void setPrice(BigDecimal price) {
+ this.price = price;
+ }
+
+ public LocalDate getPublicationDate() {
+ return publicationDate;
+ }
+
+ public void setPublicationDate(LocalDate publicationDate) {
+ this.publicationDate = publicationDate;
+ }
+
+ public BookCategory getCategory() {
+ return category;
+ }
+
+ public void setCategory(BookCategory category) {
+ this.category = category;
+ }
+
+ public String getDescription() {
+ return description;
+ }
+
+ public void setDescription(String description) {
+ this.description = description;
+ }
+}
diff --git a/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/entity/BookCategory.java b/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/entity/BookCategory.java
new file mode 100644
index 0000000..488ee98
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/entity/BookCategory.java
@@ -0,0 +1,14 @@
+package digital.pragmatech.demo.entity;
+
+public enum BookCategory {
+ FICTION,
+ NON_FICTION,
+ SCIENCE,
+ TECHNOLOGY,
+ BIOGRAPHY,
+ HISTORY,
+ FANTASY,
+ MYSTERY,
+ ROMANCE,
+ HORROR
+}
diff --git a/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/repository/BookRepository.java b/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/repository/BookRepository.java
new file mode 100644
index 0000000..bf638ba
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/repository/BookRepository.java
@@ -0,0 +1,36 @@
+package digital.pragmatech.demo.repository;
+
+import java.math.BigDecimal;
+import java.util.List;
+import java.util.Optional;
+
+import digital.pragmatech.demo.entity.Book;
+import digital.pragmatech.demo.entity.BookCategory;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface BookRepository extends JpaRepository {
+
+ Optional findByIsbn(String isbn);
+
+ List findByAuthorContainingIgnoreCase(String author);
+
+ List findByTitleContainingIgnoreCase(String title);
+
+ List findByCategory(BookCategory category);
+
+ List findByPriceBetween(BigDecimal minPrice, BigDecimal maxPrice);
+
+ @Query("SELECT b FROM Book b WHERE b.author = :author AND b.category = :category")
+ List findByAuthorAndCategory(@Param("author") String author, @Param("category") BookCategory category);
+
+ @Query("SELECT COUNT(b) FROM Book b WHERE b.category = :category")
+ long countByCategory(@Param("category") BookCategory category);
+
+ boolean existsByIsbn(String isbn);
+
+ void deleteByIsbn(String isbn);
+}
diff --git a/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/service/BookService.java b/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/service/BookService.java
new file mode 100644
index 0000000..d4da349
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/src/main/java/digital/pragmatech/demo/service/BookService.java
@@ -0,0 +1,114 @@
+package digital.pragmatech.demo.service;
+
+import java.math.BigDecimal;
+import java.util.List;
+import java.util.Optional;
+
+import digital.pragmatech.demo.entity.Book;
+import digital.pragmatech.demo.entity.BookCategory;
+import digital.pragmatech.demo.repository.BookRepository;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@Transactional
+public class BookService {
+
+ private final BookRepository bookRepository;
+
+ public BookService(BookRepository bookRepository) {
+ this.bookRepository = bookRepository;
+ }
+
+ public Book createBook(Book book) {
+ if (bookRepository.existsByIsbn(book.getIsbn())) {
+ throw new IllegalArgumentException("Book with ISBN " + book.getIsbn() + " already exists");
+ }
+ return bookRepository.save(book);
+ }
+
+ @Transactional(readOnly = true)
+ public Optional findById(Long id) {
+ return bookRepository.findById(id);
+ }
+
+ @Transactional(readOnly = true)
+ public Optional findByIsbn(String isbn) {
+ return bookRepository.findByIsbn(isbn);
+ }
+
+ @Transactional(readOnly = true)
+ public List findAll() {
+ return bookRepository.findAll();
+ }
+
+ @Transactional(readOnly = true)
+ public List findByAuthor(String author) {
+ return bookRepository.findByAuthorContainingIgnoreCase(author);
+ }
+
+ @Transactional(readOnly = true)
+ public List findByTitle(String title) {
+ return bookRepository.findByTitleContainingIgnoreCase(title);
+ }
+
+ @Transactional(readOnly = true)
+ public List findByCategory(BookCategory category) {
+ return bookRepository.findByCategory(category);
+ }
+
+ @Transactional(readOnly = true)
+ public List findByPriceRange(BigDecimal minPrice, BigDecimal maxPrice) {
+ return bookRepository.findByPriceBetween(minPrice, maxPrice);
+ }
+
+ public Book updateBook(Long id, Book updatedBook) {
+ Book existingBook = bookRepository.findById(id)
+ .orElseThrow(() -> new IllegalArgumentException("Book not found with id: " + id));
+
+ // Check if ISBN is being changed and if new ISBN already exists
+ if (!existingBook.getIsbn().equals(updatedBook.getIsbn()) &&
+ bookRepository.existsByIsbn(updatedBook.getIsbn())) {
+ throw new IllegalArgumentException("Book with ISBN " + updatedBook.getIsbn() + " already exists");
+ }
+
+ existingBook.setTitle(updatedBook.getTitle());
+ existingBook.setAuthor(updatedBook.getAuthor());
+ existingBook.setIsbn(updatedBook.getIsbn());
+ existingBook.setPrice(updatedBook.getPrice());
+ existingBook.setPublicationDate(updatedBook.getPublicationDate());
+ existingBook.setCategory(updatedBook.getCategory());
+ existingBook.setDescription(updatedBook.getDescription());
+
+ return bookRepository.save(existingBook);
+ }
+
+ public void deleteBook(Long id) {
+ if (!bookRepository.existsById(id)) {
+ throw new IllegalArgumentException("Book not found with id: " + id);
+ }
+ bookRepository.deleteById(id);
+ }
+
+ public void deleteByIsbn(String isbn) {
+ if (!bookRepository.existsByIsbn(isbn)) {
+ throw new IllegalArgumentException("Book not found with ISBN: " + isbn);
+ }
+ bookRepository.deleteByIsbn(isbn);
+ }
+
+ @Transactional(readOnly = true)
+ public long countBooks() {
+ return bookRepository.count();
+ }
+
+ @Transactional(readOnly = true)
+ public long countByCategory(BookCategory category) {
+ return bookRepository.countByCategory(category);
+ }
+
+ @Transactional(readOnly = true)
+ public long count() {
+ return bookRepository.count();
+ }
+}
diff --git a/demo/spring-boot-4.0-maven/src/main/resources/application.properties b/demo/spring-boot-4.0-maven/src/main/resources/application.properties
new file mode 100644
index 0000000..5afd1e6
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/src/main/resources/application.properties
@@ -0,0 +1,11 @@
+# H2 Database Configuration
+spring.datasource.url=jdbc:h2:mem:testdb
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=
+# JPA Configuration
+spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
+spring.jpa.hibernate.ddl-auto=create-drop
+spring.jpa.show-sql=false
+# H2 Console (for development)
+spring.h2.console.enabled=true
diff --git a/demo/spring-boot-4.0-maven/src/test/java/digital/pragmatech/demo/BadOneIT.java b/demo/spring-boot-4.0-maven/src/test/java/digital/pragmatech/demo/BadOneIT.java
new file mode 100644
index 0000000..84deb02
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/src/test/java/digital/pragmatech/demo/BadOneIT.java
@@ -0,0 +1,73 @@
+package digital.pragmatech.demo;
+
+import java.math.BigDecimal;
+
+import digital.pragmatech.demo.entity.Book;
+import digital.pragmatech.demo.entity.BookCategory;
+import digital.pragmatech.demo.repository.BookRepository;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.TestPropertySource;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+/**
+ * BAD EXAMPLE: This test uses @DirtiesContext unnecessarily,
+ * causing the Spring context to be recreated for every test method.
+ * This is a cache MISS every time!
+ */
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+@ActiveProfiles("test")
+@TestPropertySource(properties = {
+ "spring.datasource.url=jdbc:h2:mem:badtest1;DB_CLOSE_DELAY=-1",
+ "spring.jpa.hibernate.ddl-auto=create-drop",
+ "logging.level.org.springframework.web=DEBUG" // Different logging config
+})
+@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD) // BAD: Forces context reload
+class BadOneIT {
+
+ private final BookRepository bookRepository;
+
+ public BadOneIT(@Autowired BookRepository bookRepository) {
+ this.bookRepository = bookRepository;
+ }
+
+ @Test
+ void testCreateBook() {
+ Book book = new Book("Spring in Action", "Craig Walls", "978-1617294945",
+ new BigDecimal("39.99"), BookCategory.TECHNOLOGY);
+
+ Book saved = bookRepository.save(book);
+ assertNotNull(saved.getId());
+ assertEquals("Spring in Action", saved.getTitle());
+ }
+
+ @Test
+ void testFindByCategory() {
+ Book book1 = new Book("Clean Code", "Robert Martin", "978-0132350884",
+ new BigDecimal("45.99"), BookCategory.TECHNOLOGY);
+ Book book2 = new Book("The Hobbit", "J.R.R. Tolkien", "978-0547928227",
+ new BigDecimal("12.99"), BookCategory.FANTASY);
+
+ bookRepository.save(book1);
+ bookRepository.save(book2);
+
+ var techBooks = bookRepository.findByCategory(BookCategory.TECHNOLOGY);
+ assertEquals(1, techBooks.size());
+ assertEquals("Clean Code", techBooks.get(0).getTitle());
+ }
+
+ @Test
+ void testCountBooks() {
+ Book book = new Book("Effective Java", "Joshua Bloch", "978-0134685991",
+ new BigDecimal("52.99"), BookCategory.TECHNOLOGY);
+ bookRepository.save(book);
+
+ long count = bookRepository.count();
+ assertEquals(1, count);
+ }
+}
diff --git a/demo/spring-boot-4.0-maven/src/test/java/digital/pragmatech/demo/BadThreeIT.java b/demo/spring-boot-4.0-maven/src/test/java/digital/pragmatech/demo/BadThreeIT.java
new file mode 100644
index 0000000..6da4c6b
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/src/test/java/digital/pragmatech/demo/BadThreeIT.java
@@ -0,0 +1,74 @@
+package digital.pragmatech.demo;
+
+import java.math.BigDecimal;
+
+import digital.pragmatech.demo.entity.Book;
+import digital.pragmatech.demo.entity.BookCategory;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureWebMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.web.server.test.client.TestRestTemplate;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.TestPropertySource;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+/**
+ * BAD EXAMPLE: This test uses @AutoConfigureWebMvc annotation unnecessarily,
+ * and has yet another different configuration, causing another context cache MISS.
+ * Also uses webEnvironment.RANDOM_PORT but different from other tests.
+ */
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+@AutoConfigureWebMvc // BAD: Unnecessary annotation that changes context
+@ActiveProfiles("test") // Same as first test, but other config differs
+@TestPropertySource(properties = {
+ "spring.datasource.url=jdbc:h2:mem:badtest3;DB_CLOSE_DELAY=-1", // Different DB name again
+ "spring.jpa.hibernate.ddl-auto=create-drop",
+ "server.servlet.context-path=/api/v1", // BAD: Different context path
+ "spring.jackson.property-naming-strategy=SNAKE_CASE" // BAD: Different Jackson config
+})
+class BadThreeIT {
+
+ @Autowired
+ private TestRestTemplate testRestTemplate;
+
+ @Test
+ void testCreateBookViaRestApi() {
+ Book book = new Book("Java: The Complete Reference", "Herbert Schildt",
+ "978-1260440232", new BigDecimal("59.99"), BookCategory.TECHNOLOGY);
+
+ ResponseEntity response = testRestTemplate.postForEntity("/api/books", book, Book.class);
+
+ assertEquals(HttpStatus.CREATED, response.getStatusCode());
+ assertNotNull(response.getBody());
+ assertEquals("Java: The Complete Reference", response.getBody().getTitle());
+ }
+
+ @Test
+ void testGetAllBooksViaRestApi() {
+ // First create a book
+ Book book = new Book("Spring Boot in Action", "Craig Walls", "978-1617292545",
+ new BigDecimal("44.99"), BookCategory.TECHNOLOGY);
+ testRestTemplate.postForEntity("/api/books", book, Book.class);
+
+ ResponseEntity response = testRestTemplate.getForEntity("/api/books", Book[].class);
+
+ assertEquals(HttpStatus.OK, response.getStatusCode());
+ assertNotNull(response.getBody());
+ assertTrue(response.getBody().length > 0);
+ }
+
+ @Test
+ void testGetBookCountViaRestApi() {
+ ResponseEntity response = testRestTemplate.getForEntity("/api/books/count", Long.class);
+
+ assertEquals(HttpStatus.OK, response.getStatusCode());
+ assertNotNull(response.getBody());
+ assertTrue(response.getBody() >= 0);
+ }
+}
diff --git a/demo/spring-boot-4.0-maven/src/test/java/digital/pragmatech/demo/BadTwoIT.java b/demo/spring-boot-4.0-maven/src/test/java/digital/pragmatech/demo/BadTwoIT.java
new file mode 100644
index 0000000..709dd28
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/src/test/java/digital/pragmatech/demo/BadTwoIT.java
@@ -0,0 +1,69 @@
+package digital.pragmatech.demo;
+
+import java.math.BigDecimal;
+
+import digital.pragmatech.demo.entity.Book;
+import digital.pragmatech.demo.entity.BookCategory;
+import digital.pragmatech.demo.service.BookService;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.TestPropertySource;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+/**
+ * BAD EXAMPLE: This test uses different TestPropertySource values,
+ * causing a context cache MISS because the configuration is different
+ * from other tests, even though the difference is minimal.
+ */
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT,
+ properties = "server.port=8081") // BAD: Different port
+@ActiveProfiles({"test", "integration"}) // BAD: Different profiles
+@TestPropertySource(properties = {
+ "spring.datasource.url=jdbc:h2:mem:badtest2;DB_CLOSE_DELAY=-1", // Different DB name
+ "spring.jpa.hibernate.ddl-auto=create-drop",
+ "spring.jpa.show-sql=true", // Different JPA setting
+ "management.endpoints.web.exposure.include=health,info" // Additional property
+})
+class BadTwoIT {
+
+ @Autowired
+ private BookService bookService;
+
+ @Test
+ void testServiceCreateBook() {
+ Book book = new Book("Design Patterns", "Gang of Four", "978-0201633612",
+ new BigDecimal("54.99"), BookCategory.TECHNOLOGY);
+
+ Book created = bookService.createBook(book);
+ assertNotNull(created.getId());
+ assertEquals("Design Patterns", created.getTitle());
+ }
+
+ @Test
+ void testServiceFindByAuthor() {
+ Book book1 = new Book("Refactoring", "Martin Fowler", "978-0134757599",
+ new BigDecimal("47.99"), BookCategory.TECHNOLOGY);
+ Book book2 = new Book("UML Distilled", "Martin Fowler", "978-0321193681",
+ new BigDecimal("39.99"), BookCategory.TECHNOLOGY);
+
+ bookService.createBook(book1);
+ bookService.createBook(book2);
+
+ var fowlerBooks = bookService.findByAuthor("Martin Fowler");
+ assertEquals(2, fowlerBooks.size());
+ }
+
+ @Test
+ void testServiceCountByCategory() {
+ Book book = new Book("Dune", "Frank Herbert", "978-0441172719",
+ new BigDecimal("16.99"), BookCategory.FICTION);
+ bookService.createBook(book);
+
+ long fictionCount = bookService.countByCategory(BookCategory.FICTION);
+ assertEquals(1, fictionCount);
+ }
+}
diff --git a/demo/spring-boot-4.0-maven/src/test/java/digital/pragmatech/demo/GoodIT.java b/demo/spring-boot-4.0-maven/src/test/java/digital/pragmatech/demo/GoodIT.java
new file mode 100644
index 0000000..17382f3
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/src/test/java/digital/pragmatech/demo/GoodIT.java
@@ -0,0 +1,78 @@
+package digital.pragmatech.demo;
+
+import java.math.BigDecimal;
+
+import digital.pragmatech.demo.entity.Book;
+import digital.pragmatech.demo.entity.BookCategory;
+import digital.pragmatech.demo.repository.BookRepository;
+import digital.pragmatech.demo.service.BookService;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.transaction.annotation.Transactional;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+/**
+ * GOOD EXAMPLE: This test class uses consistent configuration that can be
+ * shared with other tests, resulting in context cache HITs.
+ * Uses @Transactional to clean up data instead of @DirtiesContext.
+ */
+@SpringBootTest
+@ActiveProfiles("test")
+@Transactional // GOOD: Rolls back after each test, no context recreation needed
+class GoodIT {
+
+ @Autowired
+ private BookRepository bookRepository;
+
+ @Autowired
+ private BookService bookService;
+
+ @Test
+ void testRepositoryAndService() {
+ // Test both repository and service in one test class with same context
+ Book book = new Book("Clean Architecture", "Robert C. Martin", "978-0134494166",
+ new BigDecimal("39.99"), BookCategory.TECHNOLOGY);
+
+ // Test repository
+ Book savedViaRepo = bookRepository.save(book);
+ assertNotNull(savedViaRepo.getId());
+
+ // Test service (reusing same context)
+ var foundBooks = bookService.findByAuthor("Robert C. Martin");
+ assertEquals(1, foundBooks.size());
+ assertEquals("Clean Architecture", foundBooks.get(0).getTitle());
+ }
+
+ @Test
+ void testAnotherOperationSameContext() {
+ // This test will reuse the same Spring context as the previous test
+ Book book1 = new Book("Microservices Patterns", "Chris Richardson", "978-1617294549",
+ new BigDecimal("49.99"), BookCategory.TECHNOLOGY);
+ Book book2 = new Book("Domain-Driven Design", "Eric Evans", "978-0321125217",
+ new BigDecimal("54.99"), BookCategory.TECHNOLOGY);
+
+ bookService.createBook(book1);
+ bookService.createBook(book2);
+
+ long techBookCount = bookService.countByCategory(BookCategory.TECHNOLOGY);
+ assertEquals(2, techBookCount);
+ }
+
+ @Test
+ void testContextReuseAgain() {
+ // Yet another test that will reuse the same context
+ Book book = new Book("Building Microservices", "Sam Newman", "978-1492034025",
+ new BigDecimal("44.99"), BookCategory.TECHNOLOGY);
+
+ Book created = bookService.createBook(book);
+ var found = bookRepository.findByIsbn("978-1492034025");
+
+ assertTrue(found.isPresent());
+ assertEquals(created.getId(), found.get().getId());
+ }
+}
diff --git a/demo/spring-boot-4.0-maven/src/test/java/digital/pragmatech/demo/SimpleUnitTest.java b/demo/spring-boot-4.0-maven/src/test/java/digital/pragmatech/demo/SimpleUnitTest.java
new file mode 100644
index 0000000..f4472b9
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/src/test/java/digital/pragmatech/demo/SimpleUnitTest.java
@@ -0,0 +1,32 @@
+package digital.pragmatech.demo;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+/**
+ * Simple Spring unit test to demonstrate surefire phase report generation.
+ * Unit tests (not ending with IT) are run by maven-surefire-plugin.
+ */
+class SimpleUnitTest {
+
+ @Test
+ void testSimpleAssertion() {
+ String message = "Hello, World!";
+ assertEquals("Hello, World!", message);
+ }
+
+ @Test
+ void testArithmetic() {
+ int result = 2 + 2;
+ assertEquals(4, result);
+ }
+
+ @Test
+ void testBooleanLogic() {
+ assertTrue(true);
+ assertFalse(false);
+ }
+}
diff --git a/demo/spring-boot-4.0-maven/src/test/resources/META-INF/spring.factories b/demo/spring-boot-4.0-maven/src/test/resources/META-INF/spring.factories
new file mode 100644
index 0000000..4ffb86a
--- /dev/null
+++ b/demo/spring-boot-4.0-maven/src/test/resources/META-INF/spring.factories
@@ -0,0 +1,4 @@
+org.springframework.test.context.TestExecutionListener=\
+digital.pragmatech.testing.SpringTestProfilerListener
+org.springframework.context.ApplicationContextInitializer=\
+digital.pragmatech.testing.diagnostic.ContextDiagnosticApplicationInitializer
diff --git a/src/main/java/digital/pragmatech/testing/diagnostic/ContextDiagnosticApplicationInitializer.java b/src/main/java/digital/pragmatech/testing/diagnostic/ContextDiagnosticApplicationInitializer.java
index c2c4ee5..f396bfd 100644
--- a/src/main/java/digital/pragmatech/testing/diagnostic/ContextDiagnosticApplicationInitializer.java
+++ b/src/main/java/digital/pragmatech/testing/diagnostic/ContextDiagnosticApplicationInitializer.java
@@ -21,12 +21,15 @@ public void initialize(ConfigurableApplicationContext applicationContext) {
applicationContext.addApplicationListener(
event -> {
- if (event instanceof ContextRefreshedEvent) {
- ContextDiagnostic completedDiagnostic = contextDiagnostic.completed();
- applicationContext
- .getBeanFactory()
- .registerSingleton("contextDiagnostic", completedDiagnostic);
- LOG.debug("Context Diagnostic Completed: {}", completedDiagnostic);
+ if (event instanceof ContextRefreshedEvent contextEvent) {
+ if (contextEvent.getApplicationContext().getParent() == null
+ && !applicationContext.getBeanFactory().containsSingleton("contextDiagnostic")) {
+ ContextDiagnostic completedDiagnostic = contextDiagnostic.completed();
+ applicationContext
+ .getBeanFactory()
+ .registerSingleton("contextDiagnostic", completedDiagnostic);
+ LOG.debug("Context Diagnostic Completed: {}", completedDiagnostic);
+ }
}
});
}
diff --git a/src/test/java/digital/pragmatech/testing/diagnostic/ContextDiagnosticApplicationInitializerTest.java b/src/test/java/digital/pragmatech/testing/diagnostic/ContextDiagnosticApplicationInitializerTest.java
new file mode 100644
index 0000000..fcde119
--- /dev/null
+++ b/src/test/java/digital/pragmatech/testing/diagnostic/ContextDiagnosticApplicationInitializerTest.java
@@ -0,0 +1,85 @@
+package digital.pragmatech.testing.diagnostic;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.event.ContextRefreshedEvent;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class ContextDiagnosticApplicationInitializerTest {
+
+ @Test
+ void shouldRegisterBeanInParentContextOnly() {
+ // Create parent context
+ var parentContext = new AnnotationConfigApplicationContext();
+
+ var initializer = new ContextDiagnosticApplicationInitializer();
+ initializer.initialize(parentContext);
+
+ // Refresh parent context - should register bean
+ parentContext.refresh();
+
+ assertThat(parentContext.containsBean("contextDiagnostic")).isTrue();
+
+ // Create child context
+ AnnotationConfigApplicationContext childContext = new AnnotationConfigApplicationContext();
+ childContext.setParent(parentContext);
+
+ initializer.initialize(childContext);
+ childContext.refresh();
+
+ // Child should not have the bean locally (parent still has it)
+ assertThat(childContext.containsLocalBean("contextDiagnostic")).isFalse();
+ assertThat(parentContext.containsBean("contextDiagnostic")).isTrue();
+
+ parentContext.close();
+ childContext.close();
+ }
+
+ @Test
+ void shouldNotRegisterBeanTwiceOnMultipleRefresh() {
+ var context = new AnnotationConfigApplicationContext();
+ var initializer = new ContextDiagnosticApplicationInitializer();
+
+ initializer.initialize(context);
+
+ context.refresh();
+
+ // Simulate additional refresh events
+ context.publishEvent(new ContextRefreshedEvent(context));
+ context.publishEvent(new ContextRefreshedEvent(context));
+
+ // Should still have only one bean
+ assertThat(context.getBeansOfType(ContextDiagnostic.class)).hasSize(1);
+
+ context.close();
+ }
+
+ @Test
+ void shouldHaveCorrectEqualsAndHashCode() {
+ var initializer1 = new ContextDiagnosticApplicationInitializer();
+ var initializer2 = new ContextDiagnosticApplicationInitializer();
+
+ assertThat(initializer1).isEqualTo(initializer2);
+ assertThat(initializer1.hashCode()).isEqualTo(initializer2.hashCode());
+ }
+
+ @Test
+ void shouldNotThrowExceptionWithHierarchicalContexts() {
+ // This test verifies the fix doesn't break with real hierarchical contexts
+ try (var parentContext = new AnnotationConfigApplicationContext();
+ var childContext = new AnnotationConfigApplicationContext()) {
+ childContext.setParent(parentContext);
+
+ var initializer = new ContextDiagnosticApplicationInitializer();
+ initializer.initialize(parentContext);
+ initializer.initialize(childContext);
+
+ parentContext.refresh();
+ childContext.refresh();
+
+ assertThat(parentContext.isActive()).isTrue();
+ assertThat(childContext.isActive()).isTrue();
+ }
+ }
+}