assertThrows | /tests/deps.ts | fresh@1.6.3

The next-gen web framework.

Extremely Popular

fixture fixture_async_app fixture_base_path fixture_base_path_build fixture_base_path_config fixture_build fixture_build_out_dir fixture_build_out_dir_sub fixture_build_out_dir_sub2 fixture_build_static fixture_build_sub_dir fixture_build_target fixture_config fixture_custom_500 fixture_define_helpers fixture_dev_codeframe fixture_dev_config fixture_dev_legacy fixture_error fixture_explicit_app fixture_group_index fixture_hmr fixture_invalid_handlers fixture_island_nesting fixture_islands_multiple fixture_jsx_pragma fixture_jsx_precompile fixture_layouts fixture_layouts_2 fixture_npm fixture_partials fixture_plugin fixture_plugin_error fixture_plugin_html fixture_plugin_lifecycle fixture_plugin_middleware fixture_plugin_resolved_dev fixture_render fixture_render_error fixture_route_analysis fixture_router fixture_router_ignore_files fixture_server_components fixture_static fixture_tailwind fixture_tailwind_build fixture_tailwind_build_2 fixture_tailwind_config fixture_twind_app fixture_twind_hydrate fixture_update_check www

deps.ts

SEP

clickWhenListenerReady

startFreshServerExpectErrors

function assertThrows

import { assertThrows } from "https://deno.land/x/fresh@1.6.3/tests/deps.ts";

assertThrows(fn: () => unknown, msg?: string): unknown

Executes a function, expecting it to throw. If it does not, then it throws.

assertThrows<E extends Error = Error>(

fn: () => unknown,

ErrorClass: new (...args: any[]) => E,

msgIncludes?: string,

msg?: string,

): E

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.

Executes a function, expecting it to throw. If it does not, then it throws.

Examples

Example 1

import { assertThrows } from "https://deno.land/std@0.224.0/assert/assert_throws.ts";

assertThrows(() => { throw new TypeError("hello world!"); }); // Doesn't throw
assertThrows(() => console.log("hello world!")); // Throws

Parameters

fn: () => unknown

optional

msg: string

Returns

unknown

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.

Examples

Example 1

import { assertThrows } from "https://deno.land/std@0.224.0/assert/assert_throws.ts";

assertThrows(() => { throw new TypeError("hello world!"); }, TypeError); // Doesn't throw
assertThrows(() => { throw new TypeError("hello world!"); }, RangeError); // Throws

Type Parameters

optional

E extends Error = Error

Parameters

fn: () => unknown

ErrorClass: new (...args: any[]) => E

optional

msgIncludes: string

optional

msg: string