feat: port test_general V8 instanceof suites to CTS

Author: bavulapati

tests/js-native-api/test_general/testV8Instanceof.js

@@ -0,0 +1,99 @@
+// This test is adopted from V8's test suite.
+// See deps/v8/test/mjsunit/instanceof.js in Node.js source repository.
+//
+// Copyright 2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+const addon = loadAddon('test_general');
+
+assert.ok(addon.doInstanceOf({}, Object));
+assert.ok(addon.doInstanceOf([], Object));
+
+assert.ok(!addon.doInstanceOf({}, Array));
+assert.ok(addon.doInstanceOf([], Array));
+
+function TestChains() {
+  const A = {};
+  const B = {};
+  const C = {};
+  Object.setPrototypeOf(B, A);
+  Object.setPrototypeOf(C, B);
+
+  function F() { }
+  F.prototype = A;
+  assert.ok(addon.doInstanceOf(C, F));
+  assert.ok(addon.doInstanceOf(B, F));
+  assert.ok(!addon.doInstanceOf(A, F));
+
+  F.prototype = B;
+  assert.ok(addon.doInstanceOf(C, F));
+  assert.ok(!addon.doInstanceOf(B, F));
+  assert.ok(!addon.doInstanceOf(A, F));
+
+  F.prototype = C;
+  assert.ok(!addon.doInstanceOf(C, F));
+  assert.ok(!addon.doInstanceOf(B, F));
+  assert.ok(!addon.doInstanceOf(A, F));
+}
+
+TestChains();
+
+function TestExceptions() {
+  function F() { }
+  const items = [ 1, new Number(42),
+                  true,
+                  'string', new String('hest'),
+                  {}, [],
+                  F, new F(),
+                  Object, String ];
+
+  let exceptions = 0;
+  let instanceofs = 0;
+
+  for (let i = 0; i < items.length; i++) {
+    for (let j = 0; j < items.length; j++) {
+      try {
+        if (addon.doInstanceOf(items[i], items[j])) instanceofs++;
+      } catch (e) {
+        assert.ok(addon.doInstanceOf(e, TypeError));
+        exceptions++;
+      }
+    }
+  }
+  assert.strictEqual(instanceofs, 10);
+  assert.strictEqual(exceptions, 88);
+
+  // Make sure to throw an exception if the function prototype
+  // isn't a proper JavaScript object.
+  function G() { }
+  G.prototype = undefined;
+  assert.throws(function() {
+    addon.doInstanceOf({}, G);
+  }, Error);
+}
+
+TestExceptions();