tape/test/promise_fail.js

tap-producing test harness for node and browsers

'use strict';

var tap = require('tap');
var path = require('path');
var spawn = require('child_process').spawn;
var concat = require('concat-stream');

var stripFullStack = require('./common').stripFullStack;

tap.test('callback returning rejected promise should cause that test (and only that test) to fail', function (tt) {
	tt.plan(1);

	var ps = spawn(process.execPath, [path.join(__dirname, 'promises', 'fail.js')]);

	ps.stdout.pipe(concat(function (rows) {
		var rowsString = rows.toString('utf8');

		if ((/^skip\n$/).test(rowsString)) {
			tt.pass('the test file indicated it should be skipped');
			return;
		}

		var strippedString = stripFullStack(rowsString).filter(function (line) {
			return !(/^(\s+)at(\s+)(?:Test\.)?<anonymous>(?:$|\s)/).test(line);
		}).join('\n');

		// hack for consistency across all versions of node
		// some versions produce a longer stack trace for some reason
		// since this doesn't affect the validity of the test, the extra line is removed if present
		// the regex just removes the lines "at <anonymous>" and "[... stack stripped ...]" if they occur together
		strippedString = strippedString
			.replace(/.+at (?:Test\.)?<anonymous>\n.+\[\.\.\. stack stripped \.\.\.\]\n/g, '')
			.replace(/(?:(.+)\[\.\.\. stack stripped \.\.\.\]\n)+/g, '$1[... stack stripped ...]\n');

		tt.same(strippedString, [
			'TAP version 13',
			'# promise',
			'not ok 1 Error: rejection message',
			'  ---',
			'    operator: error',
			'    stack: |-',
			'      Error: rejection message',
			'          at $TEST/promises/fail.js:$LINE:$COL',
			'          [... stack stripped ...]',
			'  ...',
			'# after',
			'ok 2 should be truthy',
			'',
			'1..2',
			'# tests 2',
			'# pass  1',
			'# fail  1',
			'',
			''
		].join('\n'));
	}));
});

tap.test('subtest callback returning rejected promise should cause that subtest (and only that subtest) to fail', function (tt) {
	tt.plan(1);

	var ps = spawn(process.execPath, [path.join(__dirname, 'promises', 'subTests.js')]);

	ps.stdout.pipe(concat(function (rows) {
		var rowsString = rows.toString('utf8');

		if ((/^skip\n$/).test(rowsString)) {
			tt.pass('the test file indicated it should be skipped');
			return;
		}

		var strippedString = stripFullStack(rowsString).filter(function (line) {
			return !(/^(\s+)at(\s+)(?:Test\.)?<anonymous>(?:$|\s)/).test(line);
		}).join('\n');

		// hack for consistency across all versions of node
		// some versions produce a longer stack trace for some reason
		// since this doesn't affect the validity of the test, the extra line is removed if present
		// the regex just removes the lines "at <anonymous>" and "[... stack stripped ...]" if they occur together
		strippedString = strippedString
			.replace(/.+at (?:Test\.)?<anonymous>\n.+\[\.\.\. stack stripped \.\.\.\]\n/, '')
			.replace(/(?:(.+)\[\.\.\. stack stripped \.\.\.\]\n)+/g, '$1[... stack stripped ...]\n');

		tt.same(stripFullStack(strippedString), [
			'TAP version 13',
			'# promise',
			'# sub test that should fail',
			'not ok 1 Error: rejection message',
			'  ---',
			'    operator: error',
			'    stack: |-',
			'      Error: rejection message',
			'          at $TEST/promises/subTests.js:$LINE:$COL',
			'          [... stack stripped ...]',
			'  ...',
			'# sub test that should pass',
			'ok 2 should be truthy',
			'',
			'1..2',
			'# tests 2',
			'# pass  1',
			'# fail  1',
			'',
			''
		]);
	}));
});