diff options
Diffstat (limited to 'std/testing/asserts.ts')
| -rw-r--r-- | std/testing/asserts.ts | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/std/testing/asserts.ts b/std/testing/asserts.ts index 50a9c59ce..50c45c6ca 100644 --- a/std/testing/asserts.ts +++ b/std/testing/asserts.ts @@ -322,7 +322,8 @@ export function fail(msg?: string): void { assert(false, `Failed assertion${msg ? `: ${msg}` : "."}`); } -/** Executes a function, expecting it to throw. If it does not, then it +/** + * Executes a function, expecting it to throw. If it does not, then it * throws. An error class and a string that should be included in the * error message can also be asserted. */ @@ -337,6 +338,9 @@ export function assertThrows<T = void>( try { fn(); } catch (e) { + if (e instanceof Error === false) { + throw new AssertionError("A non-Error object was thrown."); + } if (ErrorClass && !(Object.getPrototypeOf(e) === ErrorClass.prototype)) { msg = `Expected error to be instance of "${ErrorClass.name}", but was "${ e.constructor.name @@ -362,6 +366,11 @@ export function assertThrows<T = void>( return error; } +/** + * Executes a function which returns a promise, expecting it to throw or reject. + * If it does not, then it throws. An error class and a string that should be + * included in the error message can also be asserted. + */ export async function assertThrowsAsync<T = void>( fn: () => Promise<T>, ErrorClass?: Constructor, @@ -373,6 +382,9 @@ export async function assertThrowsAsync<T = void>( try { await fn(); } catch (e) { + if (e instanceof Error === false) { + throw new AssertionError("A non-Error object was thrown or rejected."); + } if (ErrorClass && !(Object.getPrototypeOf(e) === ErrorClass.prototype)) { msg = `Expected error to be instance of "${ErrorClass.name}", but got "${ e.name |