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test-lint.ts
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test-lint.ts
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/**
* Copyright 2017 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import test from 'ava';
import * as path from 'path';
import {Options} from '../src/cli';
import * as lint from '../src/lint';
import {nop} from '../src/util';
import {withFixtures} from './fixtures';
const OPTIONS: Options = {
gtsRootDir: path.resolve(__dirname, '../..'),
targetRootDir: './',
dryRun: false,
yes: false,
no: false,
logger: {log: nop, error: nop, dir: nop}
};
const BAD_CODE = `throw 'hello world';`;
const GOOD_CODE = `throw new Error('hello world');`;
test.serial('createProgram should return an object', async t => {
await withFixtures({'tsconfig.json': '{}'}, async () => {
const program = lint.createProgram(OPTIONS);
t.truthy(program);
});
});
test.serial('lint should return true on good code', async t => {
await withFixtures(
{
'tsconfig.json': JSON.stringify({files: ['a.ts']}),
'a.ts': GOOD_CODE,
},
async () => {
const okay = lint.lint(OPTIONS);
t.is(okay, true);
});
});
test.serial('lint should return false on bad code', async t => {
await withFixtures(
{
'tsconfig.json': JSON.stringify({files: ['a.ts']}),
'a.ts': BAD_CODE,
},
async () => {
const okay = lint.lint(OPTIONS);
t.is(okay, false);
});
});
test.serial('lint should lint files listed in tsconfig.files', async t => {
await withFixtures(
{
'tsconfig.json': JSON.stringify({files: ['a.ts']}),
'a.ts': GOOD_CODE,
'b.ts': BAD_CODE
},
async () => {
const okay = lint.lint(OPTIONS);
t.is(okay, true);
});
});
test.serial(
'lint should lint *.ts files when no files or inlcude has been specified',
async t => {
await withFixtures(
{
'tsconfig.json': JSON.stringify({}),
'a.ts': GOOD_CODE,
'b.ts': BAD_CODE
},
async () => {
const okay = lint.lint(OPTIONS);
t.is(okay, false);
});
});
test.serial('lint should not lint files listed in exclude', async t => {
await withFixtures(
{
'tsconfig.json': JSON.stringify({exclude: ['b.*']}),
'a.ts': GOOD_CODE,
'b.ts': BAD_CODE
},
async () => {
const okay = lint.lint(OPTIONS);
t.is(okay, true);
});
});
test.serial('lint should lint globs listed in include', async t => {
await withFixtures(
{
'tsconfig.json': JSON.stringify({include: ['dirb/*']}),
dira: {'a.ts': GOOD_CODE},
dirb: {'b.ts': BAD_CODE}
},
async () => {
const okay = lint.lint(OPTIONS);
t.is(okay, false);
});
});
test.serial('lint should lint only specified files', async t => {
await withFixtures(
{
'tsconfig.json': JSON.stringify({}),
dira: {'a.ts': GOOD_CODE},
dirb: {'b.ts': BAD_CODE}
},
async () => {
const aOkay = lint.lint(OPTIONS, ['dira/a.ts']);
t.is(aOkay, true);
const bOkay = lint.lint(OPTIONS, ['dirb/b.ts']);
t.is(bOkay, false);
});
});
test.serial('lint should throw for unrecognized files', async t => {
await withFixtures(
{
'tsconfig.json': JSON.stringify({}),
'a.ts': GOOD_CODE,
},
async () => {
t.throws(() => {
lint.lint(OPTIONS, ['z.ts']);
});
});
});
test.serial('lint should prefer user config file over default', async t => {
const CUSTOM_LINT_CODE = 'debugger;';
// By defualt the above should fail lint.
await withFixtures(
{
'tsconfig.json': JSON.stringify({files: ['a.ts']}),
'a.ts': CUSTOM_LINT_CODE
},
async () => {
const okay = lint.lint(OPTIONS);
t.false(okay);
});
// User should be able to override the default config.
await withFixtures(
{
'tsconfig.json': JSON.stringify({files: ['a.ts']}),
'tslint.json': JSON.stringify({}),
'a.ts': CUSTOM_LINT_CODE
},
async () => {
const okay = lint.lint(OPTIONS);
t.true(okay);
});
});
test.serial(
'lint for specific files should use file-specific config', async t => {
const CODE_WITH_PARSEINT = 'parseInt(42);';
let logBuffer = '';
const optionsWithLog = Object.assign({}, OPTIONS, {
logger: {
log: (...args: string[]) => {
logBuffer += (args.join(' '));
},
error: nop,
dir: nop
}
});
await withFixtures(
{
dira: {
'a.ts': CODE_WITH_PARSEINT,
// no tslint, so default should apply.
},
dirb: {
'b.ts': CODE_WITH_PARSEINT,
'tslint.json': JSON.stringify({})
}
},
async () => {
const okay = lint.lint(optionsWithLog, ['dira/a.ts', 'dirb/b.ts']);
t.false(okay);
t.regex(logBuffer, /dira\/a\.ts/);
t.notRegex(logBuffer, /dirb\/b\.ts/);
});
});
// TODO: test for when tsconfig.json is missing.