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wasm-bindgen/tests/wasm/math.js

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Port tests that use only basic features
2018-08-05 05:00:16 +03:00
const wasm = require('wasm-bindgen-test.js');
Fix handling of `u32` between Rust and JS All numbers in WebAssembly are signed and then each operation on them may optionally have an unsigned version. This means that when we pass large signed numbers to JS they actually show up as large negative numbers even though JS numbers can faithfully represent the type. This is fixed by adding `>>>0` in a few locations in the generated bindings to coerce the JS value into an unsigned value. Closes #1388
2019-03-26 17:29:53 -07:00
const assert = require('assert');
Port tests that use only basic features
2018-08-05 05:00:16 +03:00
exports.js_auto_bind_math = () => {
wasm.math(1.0, 2.0);
};
Fix handling of `u32` between Rust and JS All numbers in WebAssembly are signed and then each operation on them may optionally have an unsigned version. This means that when we pass large signed numbers to JS they actually show up as large negative numbers even though JS numbers can faithfully represent the type. This is fixed by adding `>>>0` in a few locations in the generated bindings to coerce the JS value into an unsigned value. Closes #1388
2019-03-26 17:29:53 -07:00
exports.roundtrip = x => x;
exports.test_js_roundtrip = () => {
assert.strictEqual(wasm.rust_roundtrip_i8(0), 0);
assert.strictEqual(wasm.rust_roundtrip_i8(0x80), -128);
assert.strictEqual(wasm.rust_roundtrip_i8(0x7f), 127);
assert.strictEqual(wasm.rust_roundtrip_i16(0), 0);
assert.strictEqual(wasm.rust_roundtrip_i16(0x8000), -32768);
assert.strictEqual(wasm.rust_roundtrip_i16(0x7fff), 32767);
assert.strictEqual(wasm.rust_roundtrip_i32(0), 0);
assert.strictEqual(wasm.rust_roundtrip_i32(0x80000000), -2147483648);
assert.strictEqual(wasm.rust_roundtrip_i32(0x7fffffff), 2147483647);
assert.strictEqual(wasm.rust_roundtrip_u8(0), 0);
assert.strictEqual(wasm.rust_roundtrip_u8(0x80), 128);
assert.strictEqual(wasm.rust_roundtrip_u8(0x7f), 127);
assert.strictEqual(wasm.rust_roundtrip_u8(0xff), 255);
assert.strictEqual(wasm.rust_roundtrip_u16(0), 0);
assert.strictEqual(wasm.rust_roundtrip_u16(0x8000), 32768);
assert.strictEqual(wasm.rust_roundtrip_u16(0x7fff), 32767);
assert.strictEqual(wasm.rust_roundtrip_u16(0xffff), 65535);
assert.strictEqual(wasm.rust_roundtrip_u32(0), 0);
assert.strictEqual(wasm.rust_roundtrip_u32(0x80000000), 2147483648);
assert.strictEqual(wasm.rust_roundtrip_u32(0x7fffffff), 2147483647);
assert.strictEqual(wasm.rust_roundtrip_u32(0xffffffff), 4294967295);
};
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