Function TestDevcontainerHelperProcess

agent/agentcontainers/devcontainercli_test.go:491–533

This is a special test helper that is executed as a subprocess. It simulates the behavior of the devcontainer CLI. nolint:revive,paralleltest // This is a test helper function.

(t *testing.T)

//
//nolint:revive,paralleltest // This is a test helper function.
func TestDevcontainerHelperProcess(t *testing.T) {
	// If not called by the test as a helper process, do nothing.
	if os.Getenv("TEST_DEVCONTAINER_WANT_HELPER_PROCESS") != "1" {
		return
	}

	helperArgs := flag.Args()
	if len(helperArgs) < 1 {
		fmt.Fprintf(os.Stderr, "No command\n")
		os.Exit(2)
	}

	if helperArgs[0] != "devcontainer" {
		fmt.Fprintf(os.Stderr, "Unknown command: %s\n", helperArgs[0])
		os.Exit(2)
	}

	// Verify arguments against expected arguments and skip
	// "devcontainer", it's not included in the input args.
	wantArgs := os.Getenv("TEST_DEVCONTAINER_WANT_ARGS")
	gotArgs := strings.Join(helperArgs[1:], " ")
	if gotArgs != wantArgs {
		fmt.Fprintf(os.Stderr, "Arguments don't match.\nWant: %q\nGot:  %q\n",
			wantArgs, gotArgs)
		os.Exit(2)
	}

	logFilePath := os.Getenv("TEST_DEVCONTAINER_LOG_FILE")
	if logFilePath != "" {
		// Read and output log file for commands that need it (like "up")
		output, err := os.ReadFile(logFilePath)
		if err != nil {
			fmt.Fprintf(os.Stderr, "Reading log file %s failed: %v\n", logFilePath, err)
			os.Exit(2)
		}
		_, _ = io.Copy(os.Stdout, bytes.NewReader(output))
	}

	if os.Getenv("TEST_DEVCONTAINER_WANT_ERROR") == "true" {
		os.Exit(1)
	}
	os.Exit(0)
}

// TestDockerDevcontainerCLI tests the DevcontainerCLI component with real Docker containers.
// This test verifies that containers can be created and recreated using the actual