52 lines
1.8 KiB
TypeScript
52 lines
1.8 KiB
TypeScript
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/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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/**
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* Given a text snippet which contains exactly one cursor symbol ('¦'), extract both the offset of
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* that cursor within the text as well as the text snippet without the cursor.
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*/
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export function extractCursorInfo(textWithCursor: string): {cursor: number, text: string} {
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const cursor = textWithCursor.indexOf('¦');
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if (cursor === -1 || textWithCursor.indexOf('¦', cursor + 1) !== -1) {
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throw new Error(`Expected to find exactly one cursor symbol '¦'`);
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}
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return {
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cursor,
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text: textWithCursor.substr(0, cursor) + textWithCursor.substr(cursor + 1),
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};
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}
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function last<T>(array: T[]): T {
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return array[array.length - 1];
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}
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/**
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* Expect that a list of objects with a `fileName` property matches a set of expected files by only
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* comparing the file names and not any path prefixes.
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*
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* This assertion is independent of the order of either list.
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*/
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export function assertFileNames(refs: Array<{fileName: string}>, expectedFileNames: string[]) {
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const actualPaths = refs.map(r => r.fileName);
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const actualFileNames = actualPaths.map(p => last(p.split('/')));
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expect(new Set(actualFileNames)).toEqual(new Set(expectedFileNames));
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}
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/**
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* Returns whether the given `ts.Diagnostic` is of a type only produced by the Angular compiler (as
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* opposed to being an upstream TypeScript diagnostic).
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*
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* Template type-checking diagnostics are not "ng-specific" in this sense, since they are plain
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* TypeScript diagnostics that are produced from expressions in the template by way of a TCB.
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*/
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export function isNgSpecificDiagnostic(diag: ts.Diagnostic): boolean {
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// Angular-specific diagnostics use a negative code space.
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return diag.code < 0;
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}
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