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SingleOrDefaultAsync.ts
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SingleOrDefaultAsync.ts
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import { InvalidOperationException } from "linq-to-typescript"
import { asAsync, expectAsync, itAsync, itEnumerableAsync, itParallel } from "../TestHelpers"
// tslint:disable:variable-name
describe("singleOrDefault", () => {
itEnumerableAsync("predicate", async (asEnumerable) => {
const vals = asEnumerable([1])
const expectResult = await expectAsync(vals.singleOrDefaultAsync(async (_x) => true))
expectResult.toBe(1)
})
itAsync("predicate", async () => {
const vals = asAsync([1])
expect(await vals.singleOrDefaultAsync(async (_x) => true)).toBe(1)
})
itParallel("predicate", async (asParallel) => {
const vals = asParallel([1])
expect(await vals.singleOrDefaultAsync(async (_x) => true)).toBe(1)
})
itEnumerableAsync("predicate multiple exception", async (asEnumerable) => {
const vals = asEnumerable([1, 2, 3, 4])
const expectException = await expectAsync(vals.singleOrDefaultAsync(async (_x) => true))
expectException.toThrowError(InvalidOperationException)
})
itAsync("predicate multiple exception", async () => {
const vals = asAsync([1, 2, 3, 4])
const expect = await expectAsync(vals.singleOrDefaultAsync(async (_x) => true))
expect.toThrowError(InvalidOperationException)
})
itParallel("predicate multiple exception", async (asParallel) => {
const vals = asParallel([1, 2, 3, 4])
const expect = await expectAsync(vals.singleOrDefaultAsync(async (_x) => true))
expect.toThrowError(InvalidOperationException)
})
itEnumerableAsync("predicate no matches null", async (asEnumerable) => {
const vals = asEnumerable([1, 2, 3, 4])
expect(await vals.singleOrDefaultAsync(async (_x) => false)).toBeNull()
})
itAsync("predicate no matches null", async () => {
const vals = asAsync([1, 2, 3, 4])
expect(await vals.singleOrDefaultAsync(async (_x) => false)).toBeNull()
})
itParallel("predicate no matches null", async (asParallel) => {
const vals = asParallel([1, 2, 3, 4])
expect(await vals.singleOrDefaultAsync(async (_x) => false)).toBeNull()
})
})