mirror of
https://github.com/rustwasm/wasm-bindgen.git
synced 2024-11-25 00:52:49 +03:00
02b7021053
This commit leverages two new attributes in the Rust compiler, `#[wasm_custom_section]` and `#[wasm_import_module]`. These two attributes allow removing a lot of hacks found in wasm-bindgen and also allows removing the requirement of `wasm-opt` to remove the unused data sections. This does require two new nightly features but we already required the `proc_macro` nightly feature and these will hopefully be stabilized before that feature!
352 lines
8.7 KiB
Rust
352 lines
8.7 KiB
Rust
extern crate test_support;
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#[test]
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fn simple() {
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test_support::project()
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.file("src/lib.rs", r#"
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#![feature(proc_macro, wasm_custom_section, wasm_import_module)]
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extern crate wasm_bindgen;
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use wasm_bindgen::prelude::*;
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#[wasm_bindgen(module = "./test")]
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extern {
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fn foo(s: &str);
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fn another(a: u32) -> i32;
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fn take_and_return_bool(a: bool) -> bool;
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fn return_object() -> JsValue;
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}
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#[wasm_bindgen]
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pub fn bar(s: &str) {
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foo(s);
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}
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#[wasm_bindgen]
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pub fn another_thunk(a: u32) -> i32 {
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another(a)
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}
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#[wasm_bindgen]
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pub fn bool_thunk(a: bool) -> bool {
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take_and_return_bool(a)
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}
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#[wasm_bindgen]
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pub fn get_the_object() -> JsValue {
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return_object()
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}
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"#)
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.file("test.ts", r#"
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import * as wasm from "./out";
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import * as assert from "assert";
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let ARG: string | null = null;
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let ANOTHER_ARG: number | null = null;
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let SYM = (Symbol as any)('a');
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export function foo(s: string): void {
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assert.strictEqual(ARG, null);
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assert.strictEqual(s, "foo");
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ARG = s;
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}
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export function another(s: number): number {
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assert.strictEqual(ANOTHER_ARG, null);
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assert.strictEqual(s, 21);
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ANOTHER_ARG = s;
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return 35;
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}
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export function take_and_return_bool(s: boolean): boolean {
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return s;
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}
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export function return_object(): any {
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return SYM;
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}
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export function test() {
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assert.strictEqual(ARG, null);
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wasm.bar("foo");
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assert.strictEqual(ARG, "foo");
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assert.strictEqual(ANOTHER_ARG, null);
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assert.strictEqual(wasm.another_thunk(21), 35);
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assert.strictEqual(ANOTHER_ARG, 21);
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assert.strictEqual(wasm.bool_thunk(true), true);
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assert.strictEqual(wasm.bool_thunk(false), false);
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assert.strictEqual(wasm.get_the_object(), SYM);
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}
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"#)
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.test();
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}
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#[test]
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fn unused() {
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test_support::project()
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.file("src/lib.rs", r#"
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#![feature(proc_macro, wasm_custom_section, wasm_import_module)]
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extern crate wasm_bindgen;
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use wasm_bindgen::prelude::*;
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#[wasm_bindgen(module = "./test")]
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extern {
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fn debug_print(s: &str);
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}
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#[wasm_bindgen]
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pub fn bar() {}
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"#)
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.file("test.ts", r#"
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import * as wasm from "./out";
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export function debug_print() {}
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export function test() {
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wasm.bar();
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}
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"#)
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.test();
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}
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#[test]
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fn strings() {
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test_support::project()
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.file("src/lib.rs", r#"
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#![feature(proc_macro, wasm_custom_section, wasm_import_module)]
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extern crate wasm_bindgen;
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use wasm_bindgen::prelude::*;
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#[wasm_bindgen(module = "./test")]
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extern {
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fn foo(a: String) -> String;
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}
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#[wasm_bindgen]
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pub fn bar(a: &str) -> String {
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foo(a.to_string())
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}
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#[wasm_bindgen]
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pub fn bar2(a: String) -> String {
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foo(a)
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}
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"#)
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.file("test.ts", r#"
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import * as wasm from "./out";
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import * as assert from "assert";
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export function foo(a: string): string {
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return a + 'b';
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}
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export function test() {
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assert.strictEqual(wasm.bar('a'), 'ab');
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assert.strictEqual(wasm.bar2('a'), 'ab');
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}
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"#)
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.test();
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}
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#[test]
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fn exceptions() {
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test_support::project()
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.file("src/lib.rs", r#"
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#![feature(proc_macro, wasm_custom_section, wasm_import_module)]
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extern crate wasm_bindgen;
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use wasm_bindgen::prelude::*;
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#[wasm_bindgen(module = "./test")]
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extern {
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fn foo();
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fn bar();
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#[wasm_bindgen(catch)]
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fn baz() -> Result<(), JsValue>;
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}
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#[wasm_bindgen]
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pub fn run() {
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foo();
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bar();
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}
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#[wasm_bindgen]
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pub fn run2() {
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assert!(baz().is_err());
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bar();
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}
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"#)
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.file("test.ts", r#"
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import { run, run2 } from "./out";
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import * as assert from "assert";
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let called = false;
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export function foo() {
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throw new Error('error!');
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}
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export function baz() {
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throw new Error('error2');
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}
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export function bar() {
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called = true;
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}
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export function test() {
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assert.throws(run, /error!/);
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assert.strictEqual(called, false);
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run2();
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assert.strictEqual(called, true);
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}
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"#)
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.test();
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}
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#[test]
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fn exn_caught() {
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test_support::project()
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.file("src/lib.rs", r#"
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#![feature(proc_macro, wasm_custom_section, wasm_import_module)]
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extern crate wasm_bindgen;
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use wasm_bindgen::prelude::*;
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#[wasm_bindgen(module = "./test")]
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extern {
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#[wasm_bindgen(catch)]
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fn foo() -> Result<(), JsValue>;
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}
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#[wasm_bindgen]
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pub fn run() -> JsValue {
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foo().unwrap_err()
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}
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"#)
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.file("test.ts", r#"
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import { run } from "./out";
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import * as assert from "assert";
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export function foo() {
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throw new Error('error!');
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}
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export function test() {
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const obj = run();
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assert.strictEqual(obj instanceof Error, true);
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assert.strictEqual(obj.message, 'error!');
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}
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"#)
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.test();
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}
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#[test]
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fn free_imports() {
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test_support::project()
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.file("src/lib.rs", r#"
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#![feature(proc_macro, wasm_custom_section, wasm_import_module)]
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extern crate wasm_bindgen;
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use wasm_bindgen::prelude::*;
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#[wasm_bindgen]
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extern {
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fn parseInt(a: &str) -> u32;
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}
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#[wasm_bindgen]
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pub fn run() {
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assert_eq!(parseInt("3"), 3);
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}
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"#)
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.file("test.ts", r#"
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import { run } from "./out";
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export function test() {
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run();
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}
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"#)
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.test();
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}
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#[test]
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fn import_a_field() {
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test_support::project()
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.file("src/lib.rs", r#"
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#![feature(proc_macro, wasm_custom_section, wasm_import_module)]
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extern crate wasm_bindgen;
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use wasm_bindgen::prelude::*;
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#[wasm_bindgen(module = "./test")]
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extern {
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static IMPORT: JsValue;
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}
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#[wasm_bindgen]
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pub fn run() {
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assert_eq!(IMPORT.as_f64(), Some(1.0));
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}
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"#)
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.file("test.ts", r#"
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import { run } from "./out";
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export const IMPORT = 1.0;
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export function test() {
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run();
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}
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"#)
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.test();
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}
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#[test]
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fn rename() {
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test_support::project()
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.file("src/lib.rs", r#"
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#![feature(proc_macro, wasm_custom_section, wasm_import_module)]
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extern crate wasm_bindgen;
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use wasm_bindgen::prelude::*;
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#[wasm_bindgen(module = "./test")]
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extern {
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#[wasm_bindgen(js_name = baz)]
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fn foo();
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}
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#[wasm_bindgen]
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pub fn run() {
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foo();
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}
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"#)
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.file("test.ts", r#"
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import * as wasm from "./out";
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import * as assert from "assert";
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let called = false;
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export function baz() {
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called = true;
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}
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export function test() {
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wasm.run();
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assert.strictEqual(called, true);
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}
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"#)
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.test();
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}
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