47 lines
1.8 KiB
JavaScript
47 lines
1.8 KiB
JavaScript
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// Phase 0 WASM smoke test.
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//
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// Loads the Emscripten-built hello module and asserts the C export is callable
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// from JS. This is the test CI runs after `cmake --build --preset wasm`.
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//
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// Run from the repo root:
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// node wasm/hello.test.mjs
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//
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// Or set HELLO_MJS to point elsewhere if your build directory differs.
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import { strict as assert } from "node:assert";
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import { existsSync } from "node:fs";
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import { fileURLToPath, pathToFileURL } from "node:url";
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import { dirname, resolve } from "node:path";
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const here = dirname(fileURLToPath(import.meta.url));
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const repoRoot = resolve(here, "..");
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const helloPath =
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process.env.HELLO_MJS ?? resolve(repoRoot, "out/build/wasm/bin/hello.mjs");
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if (!existsSync(helloPath)) {
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console.error(
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`[wasm-smoke] hello.mjs not found at: ${helloPath}\n` +
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`Did you run \`cmake --build --preset wasm\` first?\n` +
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`Override with HELLO_MJS=/path/to/hello.mjs if your build dir differs.`,
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);
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process.exit(1);
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}
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const { default: createModule } = await import(pathToFileURL(helloPath).href);
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const Module = await createModule();
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// add(): the core "does it run?" check.
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const addResult = Module.ccall("add", "number", ["number", "number"], [2, 3]);
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assert.equal(addResult, 5, `add(2, 3) returned ${addResult}, expected 5`);
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// hello_version(): guards against loading a stale module from a previous build.
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const version = Module.ccall("hello_version", "number", [], []);
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assert.equal(version, 1, `hello_version() returned ${version}, expected 1`);
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// cwrap-style wrapping should also work — frontend will use this pattern.
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const addWrapped = Module.cwrap("add", "number", ["number", "number"]);
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assert.equal(addWrapped(40, 2), 42);
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console.log("[wasm-smoke] OK — add(2,3)=5, hello_version()=1, cwrap add(40,2)=42");
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