From 7eea6f69ee4a03086c0c355107b2f93406a67dc4 Mon Sep 17 00:00:00 2001
From: Alex Hultman <alexhultman@gmail.com>
Date: Tue, 1 Nov 2022 05:29:13 +0100
Subject: [PATCH] Add initial smoke test for Deno, Node.js, Bun and similar
 "browsers"

---
 tests/smoke.mjs | 86 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 tests/smoke.mjs

diff --git a/tests/smoke.mjs b/tests/smoke.mjs
new file mode 100644
index 0000000..a4b4f69
--- /dev/null
+++ b/tests/smoke.mjs
@@ -0,0 +1,86 @@
+/* This smoke test runs against the Crc32 example program for now, but this example will be extended for more tests */
+
+var crc32 = (function () {
+    var table = new Uint32Array(256);
+    for (var i = 256; i--;) {
+        var tmp = i;
+        for (var k = 8; k--;) {
+            tmp = tmp & 1 ? 3988292384 ^ tmp >>> 1 : tmp >>> 1;
+        }
+        table[i] = tmp;
+    }
+    return function (data) {
+        var crc = -1; // Begin with all bits set ( 0xffffffff )
+        for (var i = 0, l = data.length; i < l; i++) {
+            crc = crc >>> 8 ^ table[crc & 255 ^ data[i]];
+        }
+        return (crc ^ -1) >>> 0; // Apply binary NOT
+    };
+})();
+
+async function chunkedCrc32Test(array) {
+
+    console.log("Making chunked request with body size: " + array.length);
+
+    const stream = new ReadableStream(/*{type: "bytes"}, */{
+        async start(controller) {
+            await 1;
+            controller.enqueue(array);
+            controller.close();
+        },
+    });
+
+    const r = await fetch("http://localhost:3000", {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/octet-stream' },
+        body: stream,
+        duplex: 'half',
+    });
+
+    /* Download the response body (it's a crc32 hash plus newline) */
+    const body = await r.body.getReader().read();
+
+    /* Make a crc32 comparison of the two (mind the newline in one!) */
+    const got = new TextDecoder().decode(body.value);
+
+    const want = crc32(array).toString(16);
+    if (got.toString().slice(0, -1) !== want.toString()) {
+        throw new Error("failed chunked test");
+    }
+}
+
+async function fixedCrc32Test(array) {
+    console.log("Making request with body size: " + array.length);
+
+    /* Send it with content-length */
+    const res = await fetch("http://localhost:3000", { keepalive: true, headers: { 'Content-Type': 'text/plain' }, method: "POST", body: array });
+
+    /* Download the response body (it's a crc32 hash plus newline) */
+    const body = await res.body.getReader().read();
+
+    /* Make a crc32 comparison of the two (mind the newline in one!) */
+    const got = new TextDecoder().decode(body.value);
+    const want = crc32(array).toString(16);
+    if (got.toString().slice(0, -1) !== want.toString()) {
+        throw new Error("failed test");
+    }
+}
+
+/* Maximum chunk size is less than 256mb */
+const sizes = [0, 0, 32, 32, 128, 256, 1024, 65536, 1024 * 1024, 1024 * 1024 * 128, 0, 0, 32, 32];
+for (let i = 0; i < sizes.length; i++) {
+
+    /* Create buffer with random data */
+    const array = new Uint8Array(sizes[i]);
+    //if (sizes[i] <= 65536) {
+    //self.crypto.getRandomValues(array);
+    //} else {
+    array.fill(Math.random() * 255);
+    //}
+
+    /* Do this for all methods */
+    await fixedCrc32Test(array);
+    await chunkedCrc32Test(array);
+}
+
+console.log("Done!");
\ No newline at end of file