build: prepare schematics for v8

* Prepares the schematics for V8
* Dynamically resolves the test cases so that we don't need to hardcode them for each version

Author: devversion

src/cdk/schematics/migration.json

@@ -11,6 +11,11 @@
       "description": "Updates the Angular CDK to v7",
       "factory": "./ng-update/index#updateToV7"
     },
+    "migration-v8": {
+      "version": "8",
+      "description": "Updates the Angular CDK to v8",
+      "factory": "./ng-update/index#updateToV8"
+    },
     "ng-post-update": {
       "description": "Prints out results after ng-update.",
       "factory": "./ng-update/index#postUpdate",

src/cdk/schematics/ng-update/index.ts

@@ -35,6 +35,11 @@ export function updateToV7(): Rule {
   return createUpgradeRule(TargetVersion.V7, tslintUpgradeConfig);
 }
 
+/** Entry point for the migration schematics with target of Angular Material 8.0.0 */
+export function updateToV8(): Rule {
+  return createUpgradeRule(TargetVersion.V8, tslintUpgradeConfig);
+}
+
 /** Post-update schematic to be called when update is finished. */
 export function postUpdate(): Rule {
   return () => {

src/cdk/schematics/ng-update/target-version.ts

@@ -10,4 +10,14 @@
 export enum TargetVersion {
   V6,
   V7,
+  V8,
+}
+
+/**
+ * Returns all versions that are supported by "ng update". The versions are determined
+ * based on the "TargetVersion" enum.
+ */
+export function getAllVersionNames(): string[] {
+  return Object.keys(TargetVersion)
+    .filter(enumValue => typeof TargetVersion[enumValue] === 'number');
 }

src/cdk/schematics/ng-update/test-cases/index.spec.ts

@@ -1,2 +1,18 @@
+import {defineJasmineTestCases, findBazelVersionTestCases} from '@angular/cdk/schematics/testing';
+import {getAllVersionNames} from '../target-version';
+
 /** Path to the schematic collection that includes the migrations. */
 export const migrationCollection = require.resolve('../../migration.json');
+
+describe('CDK upgrade test cases', () => {
+
+  const versionNames = getAllVersionNames().map(versionName => versionName.toLowerCase());
+  const testCasesMap = findBazelVersionTestCases(
+    'angular_material/src/cdk/schematics/ng-update/test-cases');
+
+  // Setup the test cases for each target version. The test cases will be automatically
+  // detected through Bazel's runfiles manifest.
+  versionNames.forEach(version => describe(`${version} update`, () => {
+    defineJasmineTestCases(version, migrationCollection, testCasesMap.get(version));
+  }));
+});

src/cdk/schematics/ng-update/test-cases/misc/method-call-checks.spec.ts

@@ -4,9 +4,8 @@ import {runTestCases} from '../../../testing';
 describe('v6 method call checks', () => {
 
   it('should properly report invalid method calls', async () => {
-    const {logOutput, removeTempDir} = await runTestCases('migration-v6', migrationCollection, {
-      'method-call-checks': require.resolve('./method-call-checks_input.ts')
-    });
+    const {logOutput, removeTempDir} = await runTestCases('migration-v6', migrationCollection,
+      [require.resolve('./method-call-checks_input.ts')]);
 
     expect(logOutput)
       .toMatch(/\[15,.*Found call to "FocusMonitor\.monitor".*renderer.*has been removed/);

src/cdk/schematics/ng-update/test-cases/v6-test-cases.spec.ts

@@ -14,10 +14,11 @@ targets a specific Angular CDK or Angular Material version.
 As of right now, we have two migration entry-points that handle the breaking changes for the
 given target version:  
 
-| Target Version | Description |
-|----------------|-------------|
+| Target Version | Description            |
+|----------------|------------------------|
 | V6 | Upgrade from any version to v6.0.0 |  
 | V7 | Upgrade from any version to v7.0.0 |  
+| V8 | Upgrade from any version to v8.0.0 |  
 
 Note that the migrations run _in order_ if multiple versions are transitively targeted. For
 example, consider an application which uses Angular Material v5.0.0. In case the developer runs

src/cdk/schematics/ng-update/test-cases/v7-test-cases.spec.ts

@@ -6,12 +6,14 @@ ts_library(
   name = "testing",
   module_name = "@angular/cdk/schematics/testing",
   srcs = glob(["**/*.ts"]),
+  tsconfig = "tsconfig.json",
   deps = [
     "@matdeps//@angular-devkit/core",
     "@matdeps//@angular-devkit/schematics",
     "@matdeps//@schematics/angular",
     "@matdeps//@types/node",
     "@matdeps//@types/fs-extra",
+    "@matdeps//@types/jasmine",
     "@matdeps//fs-extra",
     "@matdeps//rxjs",
   ],

src/cdk/schematics/ng-update/update-schematic.md

@@ -11,7 +11,7 @@ import {TempScopedNodeJsSyncHost} from '@angular-devkit/core/node/testing';
 import * as virtualFs from '@angular-devkit/core/src/virtual-fs/host';
 import {SchematicTestRunner} from '@angular-devkit/schematics/testing';
 import {mkdirpSync, readFileSync, writeFileSync, removeSync} from 'fs-extra';
-import {dirname, join} from 'path';
+import {dirname, join, basename, relative, sep} from 'path';
 import {createTestApp, runPostScheduledTasks} from '../testing';
 
 /** Reads the UTF8 content of the specified file. Normalizes the path and ensures that */
@@ -38,10 +38,9 @@ export function createFileSystemTestApp(runner: SchematicTestRunner) {
 }
 
 export async function runTestCases(migrationName: string, collectionPath: string,
-                                   inputs: {[name: string]: string}) {
+                                   inputFiles: string[]) {
 
   const runner = new SchematicTestRunner('schematics', collectionPath);
-  const inputNames = Object.keys(inputs);
   const initialWorkingDir = process.cwd();
 
   let logOutput = '';
@@ -51,11 +50,12 @@ export async function runTestCases(migrationName: string, collectionPath: string
 
   // Write each test-case input to the file-system. This is necessary because otherwise
   // TSLint won't be able to pick up the test cases.
-  inputNames.forEach(inputName => {
-    const tempInputPath = join(tempPath, `projects/cdk-testing/src/test-cases/${inputName}.ts`);
+  inputFiles.forEach(inputFilePath => {
+    const inputTestName = basename(inputFilePath);
+    const tempInputPath = join(tempPath, `projects/cdk-testing/src/test-cases/${inputTestName}.ts`);
 
     mkdirpSync(dirname(tempInputPath));
-    writeFileSync(tempInputPath, readFileContent(inputs[inputName]));
+    writeFileSync(tempInputPath, readFileContent(inputFilePath));
   });
 
   runner.runSchematic(migrationName, {}, appTree);
@@ -73,3 +73,68 @@ export async function runTestCases(migrationName: string, collectionPath: string
 
   return {tempPath, logOutput, removeTempDir};
 }
+
+/**
+ * Resolves all test cases for specified path using Bazel's runfile manifest. Note that we
+ * cannot just use "glob" since the test case files are not copied to the Bazel bin directory
+ * and are just runfiles.
+ */
+export function findBazelVersionTestCases(basePath: string) {
+  const testCasesMap = new Map<string, string[]>();
+  const manifestPath = process.env['RUNFILES_MANIFEST_FILE']!;
+
+  // Read the Bazel runfiles manifest which contains a path mapping for each line. Read more
+  // about this here: https://git.io/fhIZE
+  readFileSync(manifestPath, 'utf8').split('\n').forEach(line => {
+    const [runfilePath, realPath] = line.split(' ');
+
+    // In case the mapped runfile starts with the specified base path and ends with "_input.ts",
+    // we store it in our result map because we assume that this is a test case.
+    if (runfilePath.startsWith(basePath) && runfilePath.endsWith('_input.ts')) {
+      // Determine the target version of this test case by just reading the first path segment
+      // which is a "TargetVersion" (e.g. "v7", "v8")
+      const version = relative(basePath, runfilePath).split(sep)[0];
+
+      testCasesMap.set(version, (testCasesMap.get(version) || []).concat(realPath));
+    }
+  });
+
+  return testCasesMap;
+}
+
+/**
+ * Sets up the specified test cases using Jasmine by creating the appropriate jasmine
+ * spec definitions. This should be used within a "describe" jasmine closure.
+ */
+export function defineJasmineTestCases(versionName: string, collectionFile: string,
+                                inputFiles: string[] | undefined) {
+  // No test cases for the given version are available. Skip setting up tests for that
+  // version.
+  if (!inputFiles) {
+    return;
+  }
+
+  let testCasesOutputPath: string;
+  let cleanupTestApp: () => void;
+
+  beforeAll(async () => {
+    const {tempPath, removeTempDir} =
+      await runTestCases(`migration-${versionName}`, collectionFile, inputFiles);
+
+    testCasesOutputPath = join(tempPath, 'projects/cdk-testing/src/test-cases/');
+    cleanupTestApp = removeTempDir;
+  });
+
+  afterAll(() => cleanupTestApp());
+
+  // Iterates through every test case directory and generates a jasmine test block that will
+  // verify that the update schematics properly updated the test input to the expected output.
+  inputFiles.forEach(inputFile => {
+    const inputTestName = basename(inputFile);
+
+    it(`should apply update schematics to test case: ${inputTestName}`, () => {
+      expect(readFileContent(join(testCasesOutputPath, `${inputTestName}.ts`)))
+        .toBe(readFileContent(inputFile.replace('_input', '_expected_output')));
+    });
+  });
+}

src/cdk/schematics/testing/BUILD.bazel

@@ -0,0 +1,6 @@
+{
+  "compilerOptions": {
+    "lib": ["es2015"],
+    "types": ["node", "jasmine"]
+  }
+}

src/cdk/schematics/testing/test-case-setup.ts

@@ -1,2 +1,18 @@
-/** Path to the schematic collection that includes the Angular Material migrations. */
+import {defineJasmineTestCases, findBazelVersionTestCases} from '@angular/cdk/schematics/testing';
+import {getAllVersionNames} from '@angular/cdk/schematics';
+
+/** Path to the schematic collection that includes the migrations. */
 export const migrationCollection = require.resolve('../../migration.json');
+
+describe('Material upgrade test cases', () => {
+
+  const versionNames = getAllVersionNames().map(versionName => versionName.toLowerCase());
+  const testCasesMap = findBazelVersionTestCases(
+    'angular_material/src/lib/schematics/ng-update/test-cases');
+
+  // Setup the test cases for each target version. The test cases will be automatically
+  // detected through Bazel's runfiles manifest.
+  versionNames.forEach(version => describe(`${version} update`, () => {
+    defineJasmineTestCases(version, migrationCollection, testCasesMap.get(version));
+  }));
+});

src/cdk/schematics/testing/tsconfig.json

@@ -4,9 +4,8 @@ import {runTestCases} from '@angular/cdk/schematics/testing';
 describe('constructor checks', () => {
 
   it('should properly report invalid constructor expression signatures', async () => {
-    const {logOutput, removeTempDir} = await runTestCases('migration-v6', migrationCollection, {
-      'constructor-checks': require.resolve('./constructor-checks_input.ts')
-    });
+    const {logOutput, removeTempDir} = await runTestCases('migration-v6', migrationCollection,
+      [require.resolve('./constructor-checks_input.ts')]);
 
     expect(logOutput).toMatch(/\[22.*Found "NativeDateAdapter"/,
       'Expected the constructor checks to report if an argument is not assignable.');

src/lib/schematics/ng-update/test-cases/index.spec.ts

@@ -4,9 +4,8 @@ import {migrationCollection} from '../index.spec';
 describe('v6 import misc checks', () => {
 
   it('should report imports for deleted animation constants', async () => {
-    const {logOutput, removeTempDir} = await runTestCases('migration-v6', migrationCollection, {
-      'import-checks': require.resolve('./import-checks_input.ts')
-    });
+    const {logOutput, removeTempDir} = await runTestCases('migration-v6', migrationCollection,
+      [require.resolve('./import-checks_input.ts')]);
 
     expect(logOutput).toMatch(/Found deprecated symbol "SHOW_ANIMATION"/);
     expect(logOutput).toMatch(/Found deprecated symbol "HIDE_ANIMATION"/);