forked from denoland/deno_std
/
test.ts
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/
test.ts
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// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import { test, runIfMain } from "./mod.ts";
import {
assert,
assertEquals,
assertStrictEq,
assertThrows,
assertThrowsAsync
} from "./asserts.ts";
test(function testingAssertEqualActualUncoercable(): void {
let didThrow = false;
const a = Object.create(null);
try {
assertEquals(a, "bar");
} catch (e) {
didThrow = true;
}
assert(didThrow);
});
test(function testingAssertEqualExpectedUncoercable(): void {
let didThrow = false;
const a = Object.create(null);
try {
assertStrictEq("bar", a);
} catch (e) {
didThrow = true;
}
assert(didThrow);
});
test(function testingAssertStrictEqual(): void {
const a = {};
const b = a;
assertStrictEq(a, b);
});
test(function testingAssertNotStrictEqual(): void {
let didThrow = false;
const a = {};
const b = {};
try {
assertStrictEq(a, b);
} catch (e) {
assert(e.message === "actual: [object Object] expected: [object Object]");
didThrow = true;
}
assert(didThrow);
});
test(function testingDoesThrow(): void {
let count = 0;
assertThrows(
(): void => {
count++;
throw new Error();
}
);
assert(count === 1);
});
test(function testingDoesNotThrow(): void {
let count = 0;
let didThrow = false;
try {
assertThrows(
(): void => {
count++;
console.log("Hello world");
}
);
} catch (e) {
assert(e.message === "Expected function to throw.");
didThrow = true;
}
assert(count === 1);
assert(didThrow);
});
test(function testingThrowsErrorType(): void {
let count = 0;
assertThrows((): void => {
count++;
throw new TypeError();
}, TypeError);
assert(count === 1);
});
test(function testingThrowsNotErrorType(): void {
let count = 0;
let didThrow = false;
try {
assertThrows((): void => {
count++;
throw new TypeError();
}, RangeError);
} catch (e) {
assert(e.message === `Expected error to be instance of "RangeError".`);
didThrow = true;
}
assert(count === 1);
assert(didThrow);
});
test(function testingThrowsMsgIncludes(): void {
let count = 0;
assertThrows(
(): void => {
count++;
throw new TypeError("Hello world!");
},
TypeError,
"world"
);
assert(count === 1);
});
test(function testingThrowsMsgNotIncludes(): void {
let count = 0;
let didThrow = false;
try {
assertThrows(
(): void => {
count++;
throw new TypeError("Hello world!");
},
TypeError,
"foobar"
);
} catch (e) {
assert(
e.message ===
`Expected error message to include "foobar", but got "Hello world!".`
);
didThrow = true;
}
assert(count === 1);
assert(didThrow);
});
test(async function testingDoesThrowAsync(): Promise<void> {
let count = 0;
await assertThrowsAsync(
async (): Promise<void> => {
count++;
throw new Error();
}
);
assert(count === 1);
});
test(async function testingDoesReject(): Promise<void> {
let count = 0;
await assertThrowsAsync(
(): Promise<never> => {
count++;
return Promise.reject(new Error());
}
);
assert(count === 1);
});
test(async function testingDoesNotThrowAsync(): Promise<void> {
let count = 0;
let didThrow = false;
try {
await assertThrowsAsync(
async (): Promise<void> => {
count++;
console.log("Hello world");
}
);
} catch (e) {
assert(e.message === "Expected function to throw.");
didThrow = true;
}
assert(count === 1);
assert(didThrow);
});
test(async function testingDoesNotRejectAsync(): Promise<void> {
let count = 0;
let didThrow = false;
try {
await assertThrowsAsync(
(): Promise<void> => {
count++;
console.log("Hello world");
return Promise.resolve();
}
);
} catch (e) {
assert(e.message === "Expected function to throw.");
didThrow = true;
}
assert(count === 1);
assert(didThrow);
});
test(async function testingThrowsAsyncErrorType(): Promise<void> {
let count = 0;
await assertThrowsAsync((): Promise<void> => {
count++;
throw new TypeError();
}, TypeError);
assert(count === 1);
});
test(async function testingThrowsAsyncNotErrorType(): Promise<void> {
let count = 0;
let didThrow = false;
try {
await assertThrowsAsync(async (): Promise<void> => {
count++;
throw new TypeError();
}, RangeError);
} catch (e) {
assert(e.message === `Expected error to be instance of "RangeError".`);
didThrow = true;
}
assert(count === 1);
assert(didThrow);
});
test(async function testingThrowsAsyncMsgIncludes(): Promise<void> {
let count = 0;
await assertThrowsAsync(
async (): Promise<void> => {
count++;
throw new TypeError("Hello world!");
},
TypeError,
"world"
);
assert(count === 1);
});
test(async function testingThrowsAsyncMsgNotIncludes(): Promise<void> {
let count = 0;
let didThrow = false;
try {
await assertThrowsAsync(
async (): Promise<void> => {
count++;
throw new TypeError("Hello world!");
},
TypeError,
"foobar"
);
} catch (e) {
assert(
e.message ===
`Expected error message to include "foobar", but got "Hello world!".`
);
didThrow = true;
}
assert(count === 1);
assert(didThrow);
});
test("test fn overloading", (): void => {
// just verifying that you can use this test definition syntax
assert(true);
});
runIfMain(import.meta);