@angular/core
Version:
Angular - the core framework
188 lines • 29.7 kB
JavaScript
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
(function (factory) {
if (typeof module === "object" && typeof module.exports === "object") {
var v = factory(require, exports);
if (v !== undefined) module.exports = v;
}
else if (typeof define === "function" && define.amd) {
define("@angular/core/schematics/migrations/testbed-teardown/util", ["require", "exports", "typescript", "@angular/core/schematics/utils/typescript/imports", "@angular/core/schematics/utils/typescript/symbol"], factory);
}
})(function (require, exports) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.migrateTestModuleMetadataLiteral = exports.getInitTestEnvironmentLiteralReplacement = exports.findTestModuleMetadataNodes = exports.findInitTestEnvironmentCalls = void 0;
const typescript_1 = __importDefault(require("typescript"));
const imports_1 = require("@angular/core/schematics/utils/typescript/imports");
const symbol_1 = require("@angular/core/schematics/utils/typescript/symbol");
/** Finds the `initTestEnvironment` calls that need to be migrated. */
function findInitTestEnvironmentCalls(typeChecker, allSourceFiles) {
const callsToMigrate = new Set();
let totalCalls = 0;
allSourceFiles.forEach(sourceFile => {
sourceFile.forEachChild(function walk(node) {
if (typescript_1.default.isCallExpression(node) && typescript_1.default.isPropertyAccessExpression(node.expression) &&
typescript_1.default.isIdentifier(node.expression.name) &&
node.expression.name.text === 'initTestEnvironment' &&
isTestBedAccess(typeChecker, node.expression)) {
totalCalls++;
if (shouldMigrateInitTestEnvironment(node)) {
callsToMigrate.add(node);
}
}
node.forEachChild(walk);
});
});
return {
// Sort the nodes so that they will be migrated in reverse source order (nodes at the end of
// the file are migrated first). This avoids issues where a migrated node will offset the
// bounds of all nodes that come after it. Note that the nodes here are from all of the
// passed in source files, but that doesn't matter since the later nodes will still appear
// after the earlier ones.
callsToMigrate: sortInReverseSourceOrder(Array.from(callsToMigrate)),
totalCalls
};
}
exports.findInitTestEnvironmentCalls = findInitTestEnvironmentCalls;
/** Finds the `configureTestingModule` and `withModule` calls that need to be migrated. */
function findTestModuleMetadataNodes(typeChecker, sourceFile) {
const testModuleMetadataLiterals = new Set();
const withModuleImport = (0, imports_1.getImportSpecifier)(sourceFile, '@angular/core/testing', 'withModule');
sourceFile.forEachChild(function walk(node) {
if (typescript_1.default.isCallExpression(node)) {
const isConfigureTestingModuleCall = typescript_1.default.isPropertyAccessExpression(node.expression) &&
typescript_1.default.isIdentifier(node.expression.name) &&
node.expression.name.text === 'configureTestingModule' &&
isTestBedAccess(typeChecker, node.expression) && shouldMigrateModuleConfigCall(node);
const isWithModuleCall = withModuleImport && typescript_1.default.isIdentifier(node.expression) &&
(0, symbol_1.isReferenceToImport)(typeChecker, node.expression, withModuleImport) &&
shouldMigrateModuleConfigCall(node);
if (isConfigureTestingModuleCall || isWithModuleCall) {
testModuleMetadataLiterals.add(node.arguments[0]);
}
}
node.forEachChild(walk);
});
// Sort the nodes so that they will be migrated in reverse source order (nodes at the end of
// the file are migrated first). This avoids issues where a migrated node will offset the
// bounds of all nodes that come after it.
return sortInReverseSourceOrder(Array.from(testModuleMetadataLiterals));
}
exports.findTestModuleMetadataNodes = findTestModuleMetadataNodes;
/**
* Gets data that can be used to migrate a call to `TestBed.initTestEnvironment`.
* The returned `span` is used to mark the text that should be replaced while the `text`
* is the code that should be inserted instead.
*/
function getInitTestEnvironmentLiteralReplacement(node, printer) {
const literalProperties = [];
const lastArg = node.arguments[node.arguments.length - 1];
let span;
let prefix;
if (node.arguments.length > 2) {
if (isFunction(lastArg)) {
// If the last argument is a function, add the function as the `aotSummaries` property.
literalProperties.push(typescript_1.default.createPropertyAssignment('aotSummaries', lastArg));
}
else if (typescript_1.default.isObjectLiteralExpression(lastArg)) {
// If the property is an object literal, copy over all the properties.
literalProperties.push(...lastArg.properties);
}
prefix = '';
span = { start: lastArg.getStart(), end: lastArg.getEnd(), length: lastArg.getWidth() };
}
else {
const start = lastArg.getEnd();
prefix = ', ';
span = { start, end: start, length: 0 };
}
// Finally push the teardown object so that it appears last.
literalProperties.push(createTeardownAssignment());
return {
span,
text: prefix +
printer.printNode(typescript_1.default.EmitHint.Unspecified, typescript_1.default.createObjectLiteral(literalProperties, true), node.getSourceFile())
};
}
exports.getInitTestEnvironmentLiteralReplacement = getInitTestEnvironmentLiteralReplacement;
/** Migrates an object literal that is passed into `configureTestingModule` or `withModule`. */
function migrateTestModuleMetadataLiteral(node) {
return typescript_1.default.createObjectLiteral([...node.properties, createTeardownAssignment()], node.properties.length > 0);
}
exports.migrateTestModuleMetadataLiteral = migrateTestModuleMetadataLiteral;
/** Returns whether a property access points to `TestBed`. */
function isTestBedAccess(typeChecker, node) {
var _a, _b;
const symbolName = (_b = (_a = typeChecker.getTypeAtLocation(node.expression)) === null || _a === void 0 ? void 0 : _a.getSymbol()) === null || _b === void 0 ? void 0 : _b.getName();
return symbolName === 'TestBed' || symbolName === 'TestBedStatic';
}
/** Whether a call to `initTestEnvironment` should be migrated. */
function shouldMigrateInitTestEnvironment(node) {
// If there is no third argument, we definitely have to migrate it.
if (node.arguments.length === 2) {
return true;
}
// This is technically a type error so we shouldn't mess with it.
if (node.arguments.length < 2) {
return false;
}
// Otherwise we need to figure out if the `teardown` flag is set on the last argument.
const lastArg = node.arguments[2];
// Note: the checks below will identify something like `initTestEnvironment(..., ..., {})`,
// but they'll ignore a variable being passed in as the last argument like `const config = {};
// initTestEnvironment(..., ..., config)`. While we can resolve the variable to its declaration
// using `typeChecker.getTypeAtLocation(lastArg).getSymbol()?.valueDeclaration`, we deliberately
// don't, because it introduces some complexity and we may end up breaking user code. E.g.
// the `config` from the example above may be passed in to other functions or the `teardown`
// flag could be added later on by a function call.
// If the argument is an object literal and there are no
// properties called `teardown`, we have to migrate it.
if (isObjectLiteralWithoutTeardown(lastArg)) {
return true;
}
// If the last argument is an `aotSummaries` function, we also have to migrate.
if (isFunction(lastArg)) {
return true;
}
// Otherwise don't migrate if we couldn't identify the last argument.
return false;
}
/**
* Whether a call to a module configuration function should be migrated. This covers
* `TestBed.configureTestingModule` and `withModule` since they both accept `TestModuleMetadata`
* as their first argument.
*/
function shouldMigrateModuleConfigCall(node) {
return node.arguments.length > 0 && isObjectLiteralWithoutTeardown(node.arguments[0]);
}
/** Returns whether a node is a function literal. */
function isFunction(node) {
return typescript_1.default.isArrowFunction(node) || typescript_1.default.isFunctionExpression(node) ||
typescript_1.default.isFunctionDeclaration(node);
}
/** Checks whether a node is an object literal that doesn't contain a property called `teardown`. */
function isObjectLiteralWithoutTeardown(node) {
return typescript_1.default.isObjectLiteralExpression(node) && !node.properties.find(prop => {
var _a;
return ((_a = prop.name) === null || _a === void 0 ? void 0 : _a.getText()) === 'teardown';
});
}
/** Creates a teardown configuration property assignment. */
function createTeardownAssignment() {
// `teardown: {destroyAfterEach: false}`
return typescript_1.default.createPropertyAssignment('teardown', typescript_1.default.createObjectLiteral([typescript_1.default.createPropertyAssignment('destroyAfterEach', typescript_1.default.createFalse())]));
}
/** Sorts an array of AST nodes in reverse source order. */
function sortInReverseSourceOrder(nodes) {
return nodes.sort((a, b) => b.getEnd() - a.getEnd());
}
});
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport ts from 'typescript';\n\nimport {getImportSpecifier} from '../../utils/typescript/imports';\nimport {isReferenceToImport} from '../../utils/typescript/symbol';\n\n/** Result of a full-program analysis looking for `initTestEnvironment` calls. */\nexport interface InitTestEnvironmentAnalysis {\n  /** Total number of calls that were found. */\n  totalCalls: number;\n  /** Calls that need to be migrated. */\n  callsToMigrate: ts.CallExpression[];\n}\n\n/** Finds the `initTestEnvironment` calls that need to be migrated. */\nexport function findInitTestEnvironmentCalls(\n    typeChecker: ts.TypeChecker, allSourceFiles: ts.SourceFile[]): InitTestEnvironmentAnalysis {\n  const callsToMigrate = new Set<ts.CallExpression>();\n  let totalCalls = 0;\n\n  allSourceFiles.forEach(sourceFile => {\n    sourceFile.forEachChild(function walk(node: ts.Node) {\n      if (ts.isCallExpression(node) && ts.isPropertyAccessExpression(node.expression) &&\n          ts.isIdentifier(node.expression.name) &&\n          node.expression.name.text === 'initTestEnvironment' &&\n          isTestBedAccess(typeChecker, node.expression)) {\n        totalCalls++;\n        if (shouldMigrateInitTestEnvironment(node)) {\n          callsToMigrate.add(node);\n        }\n      }\n\n      node.forEachChild(walk);\n    });\n  });\n\n  return {\n    // Sort the nodes so that they will be migrated in reverse source order (nodes at the end of\n    // the file are migrated first). This avoids issues where a migrated node will offset the\n    // bounds of all nodes that come after it. Note that the nodes here are from all of the\n    // passed in source files, but that doesn't matter since the later nodes will still appear\n    // after the earlier ones.\n    callsToMigrate: sortInReverseSourceOrder(Array.from(callsToMigrate)),\n    totalCalls\n  };\n}\n\n/** Finds the `configureTestingModule` and `withModule` calls that need to be migrated. */\nexport function findTestModuleMetadataNodes(\n    typeChecker: ts.TypeChecker, sourceFile: ts.SourceFile) {\n  const testModuleMetadataLiterals = new Set<ts.ObjectLiteralExpression>();\n  const withModuleImport = getImportSpecifier(sourceFile, '@angular/core/testing', 'withModule');\n\n  sourceFile.forEachChild(function walk(node: ts.Node) {\n    if (ts.isCallExpression(node)) {\n      const isConfigureTestingModuleCall = ts.isPropertyAccessExpression(node.expression) &&\n          ts.isIdentifier(node.expression.name) &&\n          node.expression.name.text === 'configureTestingModule' &&\n          isTestBedAccess(typeChecker, node.expression) && shouldMigrateModuleConfigCall(node);\n      const isWithModuleCall = withModuleImport && ts.isIdentifier(node.expression) &&\n          isReferenceToImport(typeChecker, node.expression, withModuleImport) &&\n          shouldMigrateModuleConfigCall(node);\n\n      if (isConfigureTestingModuleCall || isWithModuleCall) {\n        testModuleMetadataLiterals.add(node.arguments[0] as ts.ObjectLiteralExpression);\n      }\n    }\n\n    node.forEachChild(walk);\n  });\n\n  // Sort the nodes so that they will be migrated in reverse source order (nodes at the end of\n  // the file are migrated first). This avoids issues where a migrated node will offset the\n  // bounds of all nodes that come after it.\n  return sortInReverseSourceOrder(Array.from(testModuleMetadataLiterals));\n}\n\n/**\n * Gets data that can be used to migrate a call to `TestBed.initTestEnvironment`.\n * The returned `span` is used to mark the text that should be replaced while the `text`\n * is the code that should be inserted instead.\n */\nexport function getInitTestEnvironmentLiteralReplacement(\n    node: ts.CallExpression, printer: ts.Printer) {\n  const literalProperties: ts.ObjectLiteralElementLike[] = [];\n  const lastArg = node.arguments[node.arguments.length - 1];\n  let span: {start: number, end: number, length: number};\n  let prefix: string;\n\n  if (node.arguments.length > 2) {\n    if (isFunction(lastArg)) {\n      // If the last argument is a function, add the function as the `aotSummaries` property.\n      literalProperties.push(ts.createPropertyAssignment('aotSummaries', lastArg));\n    } else if (ts.isObjectLiteralExpression(lastArg)) {\n      // If the property is an object literal, copy over all the properties.\n      literalProperties.push(...lastArg.properties);\n    }\n\n    prefix = '';\n    span = {start: lastArg.getStart(), end: lastArg.getEnd(), length: lastArg.getWidth()};\n  } else {\n    const start = lastArg.getEnd();\n    prefix = ', ';\n    span = {start, end: start, length: 0};\n  }\n\n  // Finally push the teardown object so that it appears last.\n  literalProperties.push(createTeardownAssignment());\n\n  return {\n    span,\n    text: prefix +\n        printer.printNode(\n            ts.EmitHint.Unspecified, ts.createObjectLiteral(literalProperties, true),\n            node.getSourceFile())\n  };\n}\n\n/** Migrates an object literal that is passed into `configureTestingModule` or `withModule`. */\nexport function migrateTestModuleMetadataLiteral(node: ts.ObjectLiteralExpression):\n    ts.ObjectLiteralExpression {\n  return ts.createObjectLiteral(\n      [...node.properties, createTeardownAssignment()], node.properties.length > 0);\n}\n\n/** Returns whether a property access points to `TestBed`. */\nfunction isTestBedAccess(typeChecker: ts.TypeChecker, node: ts.PropertyAccessExpression): boolean {\n  const symbolName = typeChecker.getTypeAtLocation(node.expression)?.getSymbol()?.getName();\n  return symbolName === 'TestBed' || symbolName === 'TestBedStatic';\n}\n\n/** Whether a call to `initTestEnvironment` should be migrated. */\nfunction shouldMigrateInitTestEnvironment(node: ts.CallExpression): boolean {\n  // If there is no third argument, we definitely have to migrate it.\n  if (node.arguments.length === 2) {\n    return true;\n  }\n\n  // This is technically a type error so we shouldn't mess with it.\n  if (node.arguments.length < 2) {\n    return false;\n  }\n\n  // Otherwise we need to figure out if the `teardown` flag is set on the last argument.\n  const lastArg = node.arguments[2];\n\n  // Note: the checks below will identify something like `initTestEnvironment(..., ..., {})`,\n  // but they'll ignore a variable being passed in as the last argument like `const config = {};\n  // initTestEnvironment(..., ..., config)`. While we can resolve the variable to its declaration\n  // using `typeChecker.getTypeAtLocation(lastArg).getSymbol()?.valueDeclaration`, we deliberately\n  // don't, because it introduces some complexity and we may end up breaking user code. E.g.\n  // the `config` from the example above may be passed in to other functions or the `teardown`\n  // flag could be added later on by a function call.\n\n  // If the argument is an object literal and there are no\n  // properties called `teardown`, we have to migrate it.\n  if (isObjectLiteralWithoutTeardown(lastArg)) {\n    return true;\n  }\n\n  // If the last argument is an `aotSummaries` function, we also have to migrate.\n  if (isFunction(lastArg)) {\n    return true;\n  }\n\n  // Otherwise don't migrate if we couldn't identify the last argument.\n  return false;\n}\n\n/**\n * Whether a call to a module configuration function should be migrated. This covers\n * `TestBed.configureTestingModule` and `withModule` since they both accept `TestModuleMetadata`\n * as their first argument.\n */\nfunction shouldMigrateModuleConfigCall(node: ts.CallExpression): node is ts.CallExpression&\n    {arguments: [ts.ObjectLiteralExpression, ...ts.Expression[]]} {\n  return node.arguments.length > 0 && isObjectLiteralWithoutTeardown(node.arguments[0]);\n}\n\n/** Returns whether a node is a function literal. */\nfunction isFunction(node: ts.Node): node is ts.ArrowFunction|ts.FunctionExpression|\n    ts.FunctionDeclaration {\n  return ts.isArrowFunction(node) || ts.isFunctionExpression(node) ||\n      ts.isFunctionDeclaration(node);\n}\n\n/** Checks whether a node is an object literal that doesn't contain a property called `teardown`. */\nfunction isObjectLiteralWithoutTeardown(node: ts.Node): node is ts.ObjectLiteralExpression {\n  return ts.isObjectLiteralExpression(node) && !node.properties.find(prop => {\n    return prop.name?.getText() === 'teardown';\n  });\n}\n\n/** Creates a teardown configuration property assignment. */\nfunction createTeardownAssignment(): ts.PropertyAssignment {\n  // `teardown: {destroyAfterEach: false}`\n  return ts.createPropertyAssignment(\n      'teardown',\n      ts.createObjectLiteral([ts.createPropertyAssignment('destroyAfterEach', ts.createFalse())]));\n}\n\n/** Sorts an array of AST nodes in reverse source order. */\nfunction sortInReverseSourceOrder<T extends ts.Node>(nodes: T[]): T[] {\n  return nodes.sort((a, b) => b.getEnd() - a.getEnd());\n}\n"]}