b210aaddf2
- Use better error messages with more context. - Unify their validation logic and share tests. - Validate also type of the name. - Refactor node (Script/Category) parser tests for easier future changes and cleaner test code (using `TestBuilder` to do dirty work in unified way). - Add more tests. Custom `Error` properties are compared manually due to `chai` not supporting deep equality checks (chaijs/chai#1065, chaijs/chai#1405).
51 lines
1.6 KiB
TypeScript
51 lines
1.6 KiB
TypeScript
// import * as assert from 'assert';
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import { expect } from 'chai';
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// Using manual checks because expect(act).to.throw(obj) does not work
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// chaijs/chai#1065, chaijs/chai#1405
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export function expectThrowsError<T extends Error>(delegate: () => void, expected: T) {
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// arrange
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if (!expected) {
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throw new Error('missing expected');
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}
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let actual: T | undefined;
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// act
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try {
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delegate();
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} catch (error) {
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actual = error;
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}
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// assert
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expect(Boolean(actual)).to.equal(true, `Expected to throw "${expected.name}" but delegate did not throw at all.`);
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expect(Boolean(actual?.stack)).to.equal(true, 'Empty stack trace.');
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expect(expected.message).to.equal(actual.message);
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expect(expected.name).to.equal(actual.name);
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expectDeepEqualsIgnoringUndefined(expected, actual);
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}
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function expectDeepEqualsIgnoringUndefined(expected: unknown, actual: unknown) {
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const actualClean = removeUndefinedProperties(actual);
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const expectedClean = removeUndefinedProperties(expected);
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expect(expectedClean).to.deep.equal(actualClean);
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}
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function removeUndefinedProperties(obj: unknown): unknown {
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return Object.keys(obj ?? {})
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.reduce((acc, key) => {
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const value = obj[key];
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switch (typeof value) {
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case 'object': {
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const cleanValue = removeUndefinedProperties(value); // recurse
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if (!Object.keys(cleanValue).length) {
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return { ...acc };
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}
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return { ...acc, [key]: cleanValue };
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}
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case 'undefined':
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return { ...acc };
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default:
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return { ...acc, [key]: value };
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}
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}, {});
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}
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