1 files changed, 71 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-zlib-truncated.js b/tests/node_compat/test/parallel/test-zlib-truncated.js
new file mode 100644
index 000000000..60e730171
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-zlib-truncated.js
@@ -0,0 +1,71 @@
+// deno-fmt-ignore-file
+// deno-lint-ignore-file
+
+// Copyright Joyent and Node contributors. All rights reserved. MIT license.
+// Taken from Node 18.12.1
+// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
+
+'use strict';
+// Tests zlib streams with truncated compressed input
+
+require('../common');
+const assert = require('assert');
+const zlib = require('zlib');
+
+const inputString = 'ΩΩLorem ipsum dolor sit amet, consectetur adipiscing eli' +
+                    't. Morbi faucibus, purus at gravida dictum, libero arcu ' +
+                    'convallis lacus, in commodo libero metus eu nisi. Nullam' +
+                    ' commodo, neque nec porta placerat, nisi est fermentum a' +
+                    'ugue, vitae gravida tellus sapien sit amet tellus. Aenea' +
+                    'n non diam orci. Proin quis elit turpis. Suspendisse non' +
+                    ' diam ipsum. Suspendisse nec ullamcorper odio. Vestibulu' +
+                    'm arcu mi, sodales non suscipit id, ultrices ut massa. S' +
+                    'ed ac sem sit amet arcu malesuada fermentum. Nunc sed. ';
+
+const errMessage = /unexpected end of file/;
+
+[
+  { comp: 'gzip', decomp: 'gunzip', decompSync: 'gunzipSync' },
+  { comp: 'gzip', decomp: 'unzip', decompSync: 'unzipSync' },
+  { comp: 'deflate', decomp: 'inflate', decompSync: 'inflateSync' },
+  { comp: 'deflateRaw', decomp: 'inflateRaw', decompSync: 'inflateRawSync' },
+].forEach(function(methods) {
+  zlib[methods.comp](inputString, function(err, compressed) {
+    assert.ifError(err);
+    const truncated = compressed.slice(0, compressed.length / 2);
+    const toUTF8 = (buffer) => buffer.toString('utf-8');
+
+    // sync sanity
+    const decompressed = zlib[methods.decompSync](compressed);
+    assert.strictEqual(toUTF8(decompressed), inputString);
+
+    // async sanity
+    zlib[methods.decomp](compressed, function(err, result) {
+      assert.ifError(err);
+      assert.strictEqual(toUTF8(result), inputString);
+    });
+
+    // Sync truncated input test
+    assert.throws(function() {
+      zlib[methods.decompSync](truncated);
+    }, errMessage);
+
+    // Async truncated input test
+    zlib[methods.decomp](truncated, function(err, result) {
+      assert.match(err.message, errMessage);
+    });
+
+    const syncFlushOpt = { finishFlush: zlib.constants.Z_SYNC_FLUSH };
+
+    // Sync truncated input test, finishFlush = Z_SYNC_FLUSH
+    const result = toUTF8(zlib[methods.decompSync](truncated, syncFlushOpt));
+    assert.strictEqual(result, inputString.substr(0, result.length));
+
+    // Async truncated input test, finishFlush = Z_SYNC_FLUSH
+    zlib[methods.decomp](truncated, syncFlushOpt, function(err, decompressed) {
+      assert.ifError(err);
+      const result = toUTF8(decompressed);
+      assert.strictEqual(result, inputString.substr(0, result.length));
+    });
+  });
+});