Ceedling Test Explorer for Visual Studio Code

Run your Ceedling tests using the Test Explorer UI.

Features

• Shows a Test Explorer in the Test view in VS Code's sidebar with all detected tests and suites and their state
• Adds CodeLenses to your test files for starting and debugging tests
• Adds Gutter decorations to your test files showing the tests' state
• Adds line decorations to the source line where a test failed
• Shows a failed test's log when the test is selected in the explorer
• Lets you choose test suites that should be run automatically after each file change
• Can be set up to report compiler and linker problems inline in the editor and in the Problems panel.

Getting started

• Install the extension and restart VS Code
• Open the workspace or folder containing your Ceedling project
• Configure your project.yml path in the VS Code's settings if required see below
• Configure the shell path where Ceedling is installed in the VS Code's settings if required (It might be required on Windows) see below
• Enable the xml_tests_report Ceedling plugin in your project.yml see the Ceedling doc
• Open the Test view
• Run your tests using the icons in the Test Explorer or the CodeLenses in your test file

Configuration

Options

Property	Description
ceedlingExplorer.projectPath	The path to the Ceedling project (where the project.yml is) to use (relative to the workspace folder). By default (or if this option is set to null) it use the same path as the workspace folder.
ceedlingExplorer.shellPath	The path to the shell where Ceedling is installed. By default (or if this option is set to null) it use the OS default shell.
ceedlingExplorer.debugConfiguration	The Debug configuration to run during debugging. See Debugging for more info.
ceedlingExplorer.prettyTestLabel	The test label is prettier in the test explorer, that mean the label is shorter and without begin prefix. E.g. inactive test_BlinkTaskShouldToggleLed, active BlinkTaskShouldToggleLed Inactive: Active:
ceedlingExplorer.prettyTestFileLabel	The test file label is prettier in the test explorer, that mean the label is shorter, without begin prefix, path and file type. E.g. inactive test/LEDs/test_BlinkTask.c, active BlinkTask Inactive: Active:
ceedlingExplorer.testCommandArgs	The command line arguments used to run Ceedling tests. The first argument have to litteraly contain the ${TEST_ID} tag. The value ["test:${TEST_ID}"] is used by default. For example, the arguments "test:${TEST_ID}", "gcov:${TEST_ID}", "utils:gcov" can be used to run tests and generate a gcov report.
ceedlingExplorer.problemMatching	Configuration of compiler/linker problem matching. See Problem matching section for details.

Problem matching

Problem matching is the mechanism that scans Ceedling output text for known error/warning/info strings and reports these inline in the editor and in the Problems panel. Tries to resemble VSCode Tasks problemMatchers mechanism.

Problem matching configuration options:

Property	Description
mode	Mode of problem matching. It is either "disabled", uses preset (i.e. "gcc") or uses custom "patterns" from patterns array. Default is "disabled".
patterns	Array of custom pattern objects used for problem matching. If mode is set to "patterns", Ceedling output is scanned line by line using each pattern provided in this array. Default is empty array.

Example configuration which is sufficient in most cases:

"ceedlingExplorer.problemMatching": {
	"mode": "gcc"
}

Problem matching pattern options:

Property	Description
scanStdout	Scan stdout output for problems. Default is false.
scanStderr	Scan stderr output for problems. Default is true.
severity	Severity of messages found by this pattern. Correct values are "error", "warning" and "info". Default is "info".
filePrefix	Used to determine file's absolute path if file location is relative. ${projectPath} replaced with project path. Empty string means that file location in message is absolute. Default is empty string.
regexp	The regular expression which is used to find an error, warning or info in the output line. ECMAScript (JavaScript) flavor, with global flag. Tip: you may find regex101 useful while experimenting with patterns. This property is required.
message	Index of the problem's message in the regular expression. This property is required.
file	Index of the problem's filename in the regular expression. This property is required.
line	Index of the problem's (first) line in the regular expression. Not used if null or not defined.
lastLine	Index of the problem's last line in the regular expression. Not used if null or not defined."
column	Index of the problem's (first) column in the regular expression. Not used if null or not defined.
lastColumn	Index of the problem's last column in the regular expression. Not used if null or not defined.

Example pattern object (GCC compiler warnings):

{
    "severity": "warning",
    "filePrefix": "${projectPath}",
    "regexp": "^(.*):(\\d+):(\\d+):\\s+warning:\\s+(.*)$",
    "message": 4,
    "file": 1,
    "line": 2,
    "column": 3
}

Commands

The following commands are available in VS Code's command palette, use the ID to add them to your keyboard shortcuts:

ID	Command
test-explorer.reload	Reload tests
test-explorer.run-all	Run all tests
test-explorer.run-file	Run tests in current file
test-explorer.run-test-at-cursor	Run the test at the current cursor position
test-explorer.cancel	Cancel running tests

Debugging

To set up debugging, create a new Debug Configuration. ${command:ceedlingExplorer.debugTestExecutable} can be used access the .out test executable filename being ran. Depending on your Ceedling configuration these can be found in projectPath/build/test/out/. Then, edit the ceedlingExplorer.debugConfiguration settings with the name of the Debug Configuration to run during debug.

Note: Individual test debugging is not supported. Instead the entire test file will be ran, so skip or remove breakpoints accordingly.

Example configuration with Native Debug (webfreak.debug):

{
    "name": "Ceedling Test Explorer Debug",
    "type": "cppdbg",
    "request": "launch",
    "program": "${workspaceFolder}/build/test/out/${command:ceedlingExplorer.debugTestExecutable}",
    "args": [],
    "stopAtEntry": false,
    "cwd": "${workspaceFolder}",
    "environment": [],
    "externalConsole": false,
    "MIMode": "gdb",
    "miDebuggerPath": "C:/MinGW/bin/gdb.exe",
    "setupCommands": [
        {
            "description": "Enable pretty-printing for gdb",
            "text": "-enable-pretty-printing",
            "ignoreFailures": true
        }
    ]
}

Known issues

• Cannot use both the junit Ceedling plugin and the xml plugin required by this extension because they are using the same ouput filename by default. If the version of the Ceedling you are using is greather than 0.28.3, you should be able to configure the output filename. #20

Troubleshooting

If you think you've found a bug, please file a bug report.