Run individual tests from the test view

I added the ability to run individual tests from the test view. If the
user clicks the run button for a single test, CTest Lab only runs that
test via the ctest command.

closes #21

CHANGELOG.md

@@ -12,6 +12,8 @@ This file documents all notable changes to the CTest Lab extension.
  [#15](https://github.com/brobeson/ctest-lab/issues/15)
 - Parse test results from `ctest` command output:
  [#17](https://github.com/brobeson/ctest-lab/issues/15)
+- Run individual tests from the test view:
+ [#21](https://github.com/brobeson/ctest-lab/issues/21)
 
 ### Removed
 

src/test_runner.ts

@@ -29,7 +29,11 @@ export async function run_tests(
  test_queue.forEach((test) => run.started(test));
 
  try {
- const command_result = await run_all_tests(signal, log);
+ const command_result = await runCtestCommand(
+ signal,
+ log,
+ test_queue.length === 1 ? test_queue[0].label : undefined
+ );
  const result_data = await test_results.load_test_results(
  `${get_build_directory()}/${test_results_file}`
  );
@@ -51,13 +55,17 @@ export async function run_tests(
  run.end();
 }
 
-async function run_all_tests(
+async function runCtestCommand(
  signal: AbortSignal,
- log: vscode.OutputChannel
+ log: vscode.OutputChannel,
+ testName?: string
 ): Promise<{ output: string; code: number | null }> {
  return new Promise((resolve, reject) => {
  const command = "ctest";
  const args = ["--output-on-failure", "--output-junit", test_results_file];
+ if (testName) {
+ args.push("--tests-regex", testName);
+ }
  log.appendLine(command + " " + args.join(" "));
  const process = spawn(command, args, {
  signal,