mirror of
https://github.com/rustwasm/wasm-bindgen.git
synced 2024-12-16 22:11:45 +03:00
0160f6af45
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
38 lines
1.5 KiB
JavaScript
38 lines
1.5 KiB
JavaScript
const wasm = require('wasm-bindgen-test.js');
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const assert = require('assert');
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exports.js_auto_bind_math = () => {
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wasm.math(1.0, 2.0);
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};
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exports.roundtrip = x => x;
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exports.test_js_roundtrip = () => {
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assert.strictEqual(wasm.rust_roundtrip_i8(0), 0);
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assert.strictEqual(wasm.rust_roundtrip_i8(0x80), -128);
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assert.strictEqual(wasm.rust_roundtrip_i8(0x7f), 127);
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assert.strictEqual(wasm.rust_roundtrip_i16(0), 0);
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assert.strictEqual(wasm.rust_roundtrip_i16(0x8000), -32768);
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assert.strictEqual(wasm.rust_roundtrip_i16(0x7fff), 32767);
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assert.strictEqual(wasm.rust_roundtrip_i32(0), 0);
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assert.strictEqual(wasm.rust_roundtrip_i32(0x80000000), -2147483648);
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assert.strictEqual(wasm.rust_roundtrip_i32(0x7fffffff), 2147483647);
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assert.strictEqual(wasm.rust_roundtrip_u8(0), 0);
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assert.strictEqual(wasm.rust_roundtrip_u8(0x80), 128);
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assert.strictEqual(wasm.rust_roundtrip_u8(0x7f), 127);
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assert.strictEqual(wasm.rust_roundtrip_u8(0xff), 255);
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assert.strictEqual(wasm.rust_roundtrip_u16(0), 0);
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assert.strictEqual(wasm.rust_roundtrip_u16(0x8000), 32768);
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assert.strictEqual(wasm.rust_roundtrip_u16(0x7fff), 32767);
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assert.strictEqual(wasm.rust_roundtrip_u16(0xffff), 65535);
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assert.strictEqual(wasm.rust_roundtrip_u32(0), 0);
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assert.strictEqual(wasm.rust_roundtrip_u32(0x80000000), 2147483648);
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assert.strictEqual(wasm.rust_roundtrip_u32(0x7fffffff), 2147483647);
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assert.strictEqual(wasm.rust_roundtrip_u32(0xffffffff), 4294967295);
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};
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