modules/assert/
assert.rs

1/*
2 * This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
5 */
6
7use ion::function::Opt;
8use ion::{Context, Error, Function, Object, Result, Value, function_spec, js_fn};
9use mozjs::jsapi::JSFunctionSpec;
10use runtime::module::NativeModule;
11
12fn assert_internal(message: Option<String>) -> Result<()> {
13	let error = match message {
14		Some(msg) => format!("Assertion Failed: {msg}"),
15		None => String::from("Assertion Failed"),
16	};
17	Err(Error::new(error, None))
18}
19
20#[js_fn]
21fn ok(Opt(assertion): Opt<bool>, Opt(message): Opt<String>) -> Result<()> {
22	if let Some(true) = assertion {
23		Ok(())
24	} else {
25		assert_internal(message)
26	}
27}
28
29#[js_fn]
30fn equals(cx: &Context, actual: Value, expected: Value, Opt(message): Opt<String>) -> Result<()> {
31	if actual.is_same(cx, &expected) {
32		Ok(())
33	} else {
34		assert_internal(message)
35	}
36}
37
38#[js_fn]
39fn throws(cx: &Context, func: Function, Opt(message): Opt<String>) -> Result<()> {
40	if func.call(cx, &Object::global(cx), &[]).is_err() {
41		assert_internal(message)
42	} else {
43		Ok(())
44	}
45}
46
47#[js_fn]
48fn fail(Opt(message): Opt<String>) -> Result<()> {
49	assert_internal(message)
50}
51
52const FUNCTIONS: &[JSFunctionSpec] = &[
53	function_spec!(ok, 0),
54	function_spec!(equals, 2),
55	function_spec!(throws, 1),
56	function_spec!(fail, 0),
57	JSFunctionSpec::ZERO,
58];
59
60pub struct Assert;
61
62impl<'cx> NativeModule<'cx> for Assert {
63	const NAME: &'static str = "assert";
64	const VARIABLE_NAME: &'static str = "assert";
65	const SOURCE: &'static str = include_str!("assert.js");
66
67	fn module(&self, cx: &'cx Context) -> Option<Object<'cx>> {
68		let assert = Object::new(cx);
69		unsafe { assert.define_methods(cx, FUNCTIONS).then_some(assert) }
70	}
71}
modules/assert/assert.rs

modules/assert/
assert.rs
