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tapIf.spec.ts
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tapIf.spec.ts
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import { ResultAsync } from '@/src/resultAsync';
describe('ResultAsync', () => {
describe('tapIf', () => {
test('does not call the action with a failed ResultAsync', async () => {
let wasCalled = false;
const sut = ResultAsync.failure<number>('error');
const result = await sut
.tapIf(true, (_num) => {
wasCalled = true;
})
.toPromise();
expect(result).toFailWith('error');
expect(wasCalled).toBe(false);
});
test('does not call the action with a false condition', async () => {
let wasCalled = false;
const sut = ResultAsync.success(1);
const result = await sut
.tapIf(false, (_num) => {
wasCalled = true;
})
.toPromise();
expect(result).toSucceedWith(1);
expect(wasCalled).toBe(false);
});
test('calls the action with a true condition and successful ResultAsync', async () => {
const value = 1;
let wasCalled = false;
const sut = ResultAsync.success(value);
const result = await sut
.tapIf(true, (_num) => {
wasCalled = true;
})
.toPromise();
expect(result).toSucceedWith(1);
expect(wasCalled).toBe(true);
});
test('calls the action with a true predicate and successful ResultAsync', async () => {
const value = 1;
let wasCalled = false;
const sut = ResultAsync.success(value);
const result = await sut
.tapIf(
() => true,
(_num) => {
wasCalled = true;
return Promise.resolve();
}
)
.toPromise();
expect(result).toSucceedWith(1);
expect(wasCalled).toBe(true);
});
});
});