wasm-bindgen/tests/dependencies.rs

extern crate test_support;

#[test]
fn dependencies_work() {
    test_support::project()
        .file(
            "src/lib.rs",
            r#"
            #![feature(proc_macro, wasm_custom_section, wasm_import_module)]
            extern crate wasm_bindgen;
            extern crate dependency;
            use wasm_bindgen::prelude::*;

            #[wasm_bindgen]
            pub fn return_dep_ty(x: f64) -> dependency::Foo {
                dependency::Foo(x)
            }

            #[wasm_bindgen]
            pub fn takes_own_dep_ty(foo: dependency::Foo) -> f64 {
                foo.0
            }

            #[wasm_bindgen]
            pub fn takes_ref_dep_ty(foo: &dependency::Foo) -> f64 {
                foo.0
            }

            #[wasm_bindgen]
            pub fn takes_mut_dep_ty(foo: &mut dependency::Foo, x: f64) {
                foo.0 = x;
            }
        "#,
        )
        .add_local_dependency("dependency", "vendor/dependency")
        .file(
            "vendor/dependency/Cargo.toml",
            &format!(
                r#"
                [package]
                name = "dependency"
                version = "0.0.1"
                authors = []

                [dependencies]
                wasm-bindgen = {{ path = '{}' }}
        "#,
                env!("CARGO_MANIFEST_DIR")
            ),
        )
        .file(
            "vendor/dependency/src/lib.rs",
            r#"
            #![feature(proc_macro, wasm_custom_section, wasm_import_module)]
            extern crate wasm_bindgen;
            use wasm_bindgen::prelude::*;

            #[wasm_bindgen]
            pub struct Foo(pub f64);

            #[wasm_bindgen]
            impl Foo {
                pub fn new(x: f64) -> Foo { Foo(x) }
                pub fn get(&self) -> f64 { self.0 }
            }
        "#,
        )
        .file(
            "test.ts",
            r#"
            import * as assert from "assert";
            import * as wasm from "./out";

            export function test() {
                const foo = wasm.return_dep_ty(42);
                assert.strictEqual(foo.get(), 42);

                const x = wasm.takes_ref_dep_ty(foo);
                assert.strictEqual(x, 42);

                const y = 1337;
                wasm.takes_mut_dep_ty(foo, y);
                assert.strictEqual(foo.get(), y);

                const z = wasm.takes_own_dep_ty(foo);
                assert.strictEqual(z, y);
                assert.strictEqual(foo.ptr, 0);
            }
        "#,
        )
        .test();
}