/testing/asserts.ts | std@0.222.1

Deprecated

(will be removed after 1.0.0) Import from https://deno.land/std/assert/mod.ts instead.

import * as mod from "https://deno.land/std@0.222.1/testing/asserts.ts";

A library of assertion functions. If the assertion is false an AssertionError will be thrown which will result in pretty-printed diff of failing assertion.

This module is browser compatible, but do not rely on good formatting of values for AssertionError messages in browsers.

Classes

AssertionError

deprecated

Error thrown when an assertion fails.

Functions

f assert deprecated	Make an assertion, error will be thrown if `expr` does not have truthy value.
f assertAlmostEquals deprecated	Make an assertion that `actual` and `expected` are almost equal numbers through a given tolerance. It can be used to take into account IEEE-754 double-precision floating-point representation limitations. If the values are not almost equal then throw.
f assertArrayIncludes deprecated	Make an assertion that `actual` includes the `expected` values. If not then an error will be thrown.
f assertEquals deprecated	Make an assertion that `actual` and `expected` are equal, deeply. If not deeply equal, then throw.
f assertExists deprecated	Make an assertion that actual is not null or undefined. If not then throw.
f assertFalse deprecated	Make an assertion, error will be thrown if `expr` have truthy value.
f assertGreater deprecated	Make an assertion that `actual` is greater than `expected`. If not then throw.
f assertGreaterOrEqual deprecated	Make an assertion that `actual` is greater than or equal to `expected`. If not then throw.
f assertInstanceOf deprecated	Make an assertion that `obj` is an instance of `type`. If not then throw.
f assertIsError deprecated	Make an assertion that `error` is an `Error`. If not then an error will be thrown. An error class and a string that should be included in the error message can also be asserted.
f assertLess deprecated	Make an assertion that `actual` is less than `expected`. If not then throw.
f assertLessOrEqual deprecated	Make an assertion that `actual` is less than or equal to `expected`. If not then throw.
f assertMatch deprecated	Make an assertion that `actual` match RegExp `expected`. If not then throw.
f assertNotEquals deprecated	Make an assertion that `actual` and `expected` are not equal, deeply. If not then throw.
f assertNotInstanceOf deprecated	Make an assertion that `obj` is not an instance of `type`. If so, then throw.
f assertNotMatch deprecated	Make an assertion that `actual` not match RegExp `expected`. If match then throw.
f assertNotStrictEquals deprecated	Make an assertion that `actual` and `expected` are not strictly equal. If the values are strictly equal then throw.
f assertObjectMatch deprecated	Make an assertion that `actual` object is a subset of `expected` object, deeply. If not, then throw.
f assertRejects deprecated	Executes a function which returns a promise, expecting it to reject.
f assertStrictEquals deprecated	Make an assertion that `actual` and `expected` are strictly equal. If not then throw.
f assertStringIncludes deprecated	Make an assertion that actual includes expected. If not then throw.
f assertThrows deprecated	Executes a function, expecting it to throw. If it does not, then it throws.
f equal deprecated	Deep equality comparison used in assertions
f fail deprecated	Forcefully throws a failed assertion.
f unimplemented deprecated	Use this to stub out methods that will throw when invoked.
f unreachable deprecated	Use this to assert unreachable code.

Type Aliases

T AnyConstructor deprecated	Any constructor
T ArrayLikeArg deprecated	An array-like object (`Array`, `Uint8Array`, `NodeList`, etc.) that is not a string.
T Falsy deprecated	Assertion condition for `assertFalse`.
T GetConstructorType deprecated	Gets constructor type