From f2036e21bfb3988432b92e04ed4cdb23becc735a Mon Sep 17 00:00:00 2001
From: Alexey Shvayka <shvaikalesh@gmail.com>
Date: Mon, 10 Aug 2020 07:22:11 +0300
Subject: [PATCH] Add strict equality tests

---
 .../emulates-undefined.js                     | 29 +++++++++++++++++++
 .../strict-equals/emulates-undefined.js       | 27 +++++++++++++++++
 2 files changed, 56 insertions(+)
 create mode 100644 test/annexB/language/expressions/strict-does-not-equals/emulates-undefined.js
 create mode 100644 test/annexB/language/expressions/strict-equals/emulates-undefined.js

diff --git a/test/annexB/language/expressions/strict-does-not-equals/emulates-undefined.js b/test/annexB/language/expressions/strict-does-not-equals/emulates-undefined.js
new file mode 100644
index 0000000000..5b7ce3234d
--- /dev/null
+++ b/test/annexB/language/expressions/strict-does-not-equals/emulates-undefined.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-equality-operators-runtime-semantics-evaluation
+description: >
+  Strict Equality Comparison doesn't special-case [[IsHTMLDDA]] objects.
+info: |
+  EqualityExpression : EqualityExpression !== RelationalExpression 
+
+  [...]
+  5. Let r be the result of performing Strict Equality Comparison rval === lval.
+  6. Assert: r is a normal completion.
+  7. If r.[[Value]] is true, return false. Otherwise, return true.
+
+  Strict Equality Comparison
+
+  1. If Type(x) is different from Type(y), return false.
+features: [IsHTMLDDA]
+---*/
+
+var IsHTMLDDA = $262.IsHTMLDDA;
+
+assert(IsHTMLDDA !== undefined, "!== with `undefined`");
+assert(undefined !== IsHTMLDDA, "!== with `undefined`");
+
+assert(IsHTMLDDA !== null, "!== with `null`");
+assert(null !== IsHTMLDDA, "!== with `null`");
+
+assert.sameValue(IsHTMLDDA !== IsHTMLDDA, false);
diff --git a/test/annexB/language/expressions/strict-equals/emulates-undefined.js b/test/annexB/language/expressions/strict-equals/emulates-undefined.js
new file mode 100644
index 0000000000..9ecd17dde0
--- /dev/null
+++ b/test/annexB/language/expressions/strict-equals/emulates-undefined.js
@@ -0,0 +1,27 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-equality-operators-runtime-semantics-evaluation
+description: >
+  Strict Equality Comparison doesn't special-case [[IsHTMLDDA]] objects.
+info: |
+  EqualityExpression : EqualityExpression === RelationalExpression 
+
+  [...]
+  5. Return the result of performing Strict Equality Comparison rval === lval.
+
+  Strict Equality Comparison
+
+  1. If Type(x) is different from Type(y), return false.
+features: [IsHTMLDDA]
+---*/
+
+var IsHTMLDDA = $262.IsHTMLDDA;
+
+assert.sameValue(IsHTMLDDA === undefined, false, "=== with `undefined`");
+assert.sameValue(undefined === IsHTMLDDA, false, "=== with `undefined`");
+
+assert.sameValue(IsHTMLDDA === null, false, "=== with `null`");
+assert.sameValue(null === IsHTMLDDA, false, "=== with `null`");
+
+assert(IsHTMLDDA === IsHTMLDDA);