feat!: introduce structured runtime test config

[rvolosatovs]

Feature or Problem

• Replace the usage of free-form TomlMap by a structured, typed Config struct
• Remove bin_path from config
• Require passing of Config and path to test_provider at runtime

Related Issues

Closes #6

Release Information

Consumer Impact

Breaking changes:

• load_config is replaced by Config::load method
• test_provider requires path and Config as arguments
• rust_backtrace config field is renamed to backtrace and its type is changed from string to a boolean

This is a breaking API change, downstream packages will have to be updated, e.g. for https://github.com/wasmCloud/capability-providers httpserver provider:

diff --git a/httpserver-rs/.cargo/config b/httpserver-rs/.cargo/config
new file mode 100644
index 0000000..dfa84e8
--- /dev/null
+++ b/httpserver-rs/.cargo/config
@@ -0,0 +1,2 @@
+[unstable]
+bindeps = true
diff --git a/httpserver-rs/provider_test_config.toml b/httpserver-rs/provider_test_config.toml
deleted file mode 100644
index 162254f..0000000
--- a/httpserver-rs/provider_test_config.toml
+++ /dev/null
@@ -1,28 +0,0 @@
-# configuration for httpserver test
-
-# name of compiled binary (usually project name unless overridden in [[bin]]
-# Required
-bin_path = "target/debug/httpserver"
-
-# set RUST_LOG environment variable (default "info")
-rust_log = "debug"
-
-# set RUST_BACKTRACE (default: 0)
-rust_backtrace = "1"
-
-# nats should be running. Uncomment to override the default url
-#nats_url = "0.0.0.0:4222"
-
-# redis should be running. Uncomment to override the default url
-#redis_url = "0.0.0.0:6379"
-
-# lattice prefix (default "default")
-#lattice_rpc_prefix = "default"
-
-# link name (default: "default")
-#link_name = "default"
-
-# name of contract under test
-contract_id = "wasmcloud:httpserver"
-
-values = { address = "0.0.0.0:9000" }
diff --git a/httpserver-rs/rust-toolchain.toml b/httpserver-rs/rust-toolchain.toml
new file mode 100644
index 0000000..5d56faf
--- /dev/null
+++ b/httpserver-rs/rust-toolchain.toml
@@ -0,0 +1,2 @@
+[toolchain]
+channel = "nightly"
diff --git a/httpserver-rs/tests/httpserver_test.rs b/httpserver-rs/tests/httpserver_test.rs
index c9d11d1..98e87aa 100644
--- a/httpserver-rs/tests/httpserver_test.rs
+++ b/httpserver-rs/tests/httpserver_test.rs
@@ -21,7 +21,7 @@ use wasmcloud_interface_httpserver::*;
 use wasmcloud_test_util::{
     check,
     cli::print_test_results,
-    provider_test::test_provider,
+    provider_test::{self, log, Config, LogLevel},
     testing::{TestOptions, TestResult},
 };
 #[allow(unused_imports)]
@@ -34,6 +34,20 @@ const SERVER_UNDER_TEST: &str = "http://localhost:9000";
 /// number of http requests in this test
 const NUM_RPC: u32 = 5;
 
+async fn test_provider() -> provider_test::Provider {
+    provider_test::test_provider(
+        env!("CARGO_BIN_EXE_httpserver"),
+        Config {
+            log_level: LogLevel(log::Level::Debug),
+            backtrace: true,
+            contract_id: "wasmcloud:httpserver".into(),
+            values: [("address".into(), "0.0.0.0:9000".into())].into(),
+            ..Default::default()
+        },
+    )
+    .await
+}
+
 #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
 async fn run_all() -> std::result::Result<(), Box<dyn std::error::Error>> {
     let opts = TestOptions::default();

Testing

Tested on platform(s)

• x86_64-linux
• aarch64-linux
• x86_64-darwin
• aarch64-darwin
• x86_64-windows

Platforms

Built on platform(s)

• x86_64-linux
• aarch64-linux
• x86_64-darwin
• aarch64-darwin
• x86_64-windows

Unit Test(s)

Acceptance or Integration

Manual Verification

wasmCloud/capability-providers#219 (wasmCloud/capability-providers@78fab3e in particular)

[rvolosatovs]

I'll undraft the PR once all downstream packages are adapted (and, hence, the design is validated)

[stevelr]

I really like this - good improvement. Please make sure to rebase to main to address any merge conflicts. Also bump the version in Cargo.toml to 0.8.0.

[stevelr]

Althoughredis_url was in the sample config (commented out), I don't think it should be part of the Config struct since most tests won't need it. If a test does need it, it fits better into the values map.

nats_url should be here because nearly ever test does need that