test: add tests for clean (#46)

test/test-clean.ts

@@ -0,0 +1,90 @@
+/**
+ * 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 fs from 'fs';
+import * as path from 'path';
+import {clean} from '../src/clean';
+import {nop} from '../src/util';
+import {Options} from '../src/cli';
+import {withFixtures} from './fixtures';
+
+const OPTIONS: Options = {
+  gtsRootDir: './',
+  targetRootDir: './',
+  dryRun: false,
+  yes: false,
+  logger: {
+    log: nop,
+    error: nop,
+    dir: nop
+  }
+};
+
+test.failing.serial(
+    'should gracefully error if tsconfig is missing', async t => {
+      await withFixtures({}, async () => {
+        await clean(OPTIONS);
+        t.pass();
+      });
+    });
+
+test.serial(
+    'should gracefully error if tsconfig does not have valid outDir',
+    async t => {
+      await withFixtures({'tsconfig.json': JSON.stringify({})}, async () => {
+        const deleted = await clean(OPTIONS);
+        t.is(deleted, false);
+      });
+    });
+
+test.serial('should avoid deleting .', async t => {
+  await withFixtures(
+      {'tsconfig.json': JSON.stringify({compilerOptions: {outDir: '.'}})},
+      async () => {
+        const deleted = await clean(OPTIONS);
+        t.is(deleted, false);
+      });
+});
+
+test.failing.serial('should ensure that outDir is local to targetRoot', async t => {
+  await withFixtures(
+    {'tsconfig.json': JSON.stringify({compilerOptions: {outDir: '../out'}})},
+    async () => {
+      const deleted = await clean(OPTIONS);
+      t.is(deleted, false);
+    });
+});
+
+test.serial('should remove outDir', async t => {
+  const OUT = 'outputDirectory';
+  await withFixtures(
+    {
+      'tsconfig.json': JSON.stringify({compilerOptions: {outDir: OUT}}),
+      [OUT]: {}
+    },
+    async (dir) => {
+      const outputPath = path.join(dir, OUT);
+      // make sure the output directory exists.
+      fs.accessSync(outputPath);
+      const deleted = await clean(OPTIONS);
+      t.is(deleted, true);
+      // make sure the directory has been deleted.
+      t.throws(() => {
+        fs.accessSync(outputPath);
+      });
+    });
+});