export function computeTestCommand()

in src/testUtils.ts [425:510]

• 67 lines of code
• 16 McCabe index (conditional complexity)

export function computeTestCommand(
	testconfig: TestConfig,
	targets: string[]
): {
	args: Array<string>; // test command args.
	outArgs: Array<string>; // compact test command args to show to user.
	tmpCoverPath?: string; // coverage file path if coverage info is necessary.
	addJSONFlag: boolean | undefined; // true if we add extra -json flag for stream processing.
} {
	const args: Array<string> = ['test'];
	// user-specified flags
	const argsFlagIdx = testconfig.flags?.indexOf('-args') ?? -1;
	const userFlags = argsFlagIdx < 0 ? testconfig.flags : testconfig.flags.slice(0, argsFlagIdx);
	const userArgsFlags = argsFlagIdx < 0 ? [] : testconfig.flags.slice(argsFlagIdx);

	// flags to limit test time
	if (testconfig.isBenchmark) {
		args.push('-benchmem', '-run=^$');
	} else {
		args.push('-timeout', testconfig.goConfig['testTimeout']);
	}

	// tags flags only if user didn't set -tags yet.
	const testTags: string = getTestTags(testconfig.goConfig);
	if (testTags && userFlags.indexOf('-tags') === -1) {
		args.push('-tags', testTags);
	}

	// coverage flags
	let tmpCoverPath: string | undefined;
	if (testconfig.applyCodeCoverage) {
		tmpCoverPath = getTempFilePath('go-code-cover');
		args.push('-coverprofile=' + tmpCoverPath);
		const coverMode = testconfig.goConfig['coverMode'];
		switch (coverMode) {
			case 'default':
				break;
			case 'set':
			case 'count':
			case 'atomic':
				args.push('-covermode', coverMode);
				break;
			default:
				vscode.window.showWarningMessage(
					`go.coverMode=${coverMode} is illegal. Use 'set', 'count', 'atomic', or 'default'.`
				);
		}
	}

	// all other test run/benchmark flags
	args.push(...targetArgs(testconfig));

	const outArgs = args.slice(0); // command to show

	// if user set -v, set -json to emulate streaming test output
	const addJSONFlag = (userFlags.includes('-v') || testconfig.goTestOutputConsumer) && !userFlags.includes('-json');
	if (addJSONFlag) {
		args.push('-json'); // this is not shown to the user.
	}

	if (targets.length > 4) {
		outArgs.push('<long arguments omitted>');
	} else {
		outArgs.push(...targets);
	}
	args.push(...targets);

	// ensure that user provided flags are appended last (allow use of -args ...)
	// ignore user provided -run flag if we are already using it
	if (args.indexOf('-run') > -1) {
		removeRunFlag(userFlags);
	}

	args.push(...userFlags);
	outArgs.push(...userFlags);

	args.push(...userArgsFlags);
	outArgs.push(...userArgsFlags);

	return {
		args,
		outArgs,
		tmpCoverPath,
		addJSONFlag
	};
}