From 7d4ad896f5bcceccc0b91e9bb1bb3943ec2ddd09 Mon Sep 17 00:00:00 2001
From: Eric Vergnaud <eric.vergnaud@wanadoo.fr>
Date: Fri, 8 Mar 2024 19:40:06 +0100
Subject: [PATCH] add test spec for HashSet

Signed-off-by: Eric Vergnaud <eric.vergnaud@wanadoo.fr>
---
 runtime/JavaScript/spec/HashSetSpec.js     | 52 ++++++++++++++++++++++
 runtime/JavaScript/spec/IntervalSetSpec.js |  5 +--
 2 files changed, 54 insertions(+), 3 deletions(-)
 create mode 100644 runtime/JavaScript/spec/HashSetSpec.js

diff --git a/runtime/JavaScript/spec/HashSetSpec.js b/runtime/JavaScript/spec/HashSetSpec.js
new file mode 100644
index 0000000000..542d4fb566
--- /dev/null
+++ b/runtime/JavaScript/spec/HashSetSpec.js
@@ -0,0 +1,52 @@
+import HashSet from "../src/antlr4/misc/HashSet.js";
+import HashCode from "../src/antlr4/misc/HashCode.js";
+
+class Thing {
+
+    value1 = Math.random();
+    value2 = Math.random();
+
+    hashCode() {
+        return HashCode.hashStuff(this.value1);
+    }
+
+    equals(other) {
+        return other instanceof Thing
+            && other.value1 === this.value1
+            && other.value2 === this.value2;
+    }
+}
+describe('test HashSet', () => {
+
+    it("adds a thing", () => {
+        const t1 = new Thing();
+        const t2 = new Thing();
+        const set = new HashSet();
+        set.add(t1);
+        expect(set.has(t1)).toBeTrue();
+        expect(set.has(t2)).toBeFalse();
+        expect(set.length).toEqual(1);
+    })
+
+    it("adds a thing once only", () => {
+        const t1 = new Thing();
+        const set = new HashSet();
+        set.add(t1);
+        set.add(t1);
+        expect(set.has(t1)).toBeTrue();
+        expect(set.length).toEqual(1);
+    })
+
+    it("adds 2 things with same hash code", () => {
+        const t1 = new Thing();
+        const t2 = new Thing();
+        t2.value1 = t1.value1;
+        const set = new HashSet();
+        set.add(t1);
+        set.add(t2);
+        expect(set.has(t1)).toBeTrue();
+        expect(set.has(t2)).toBeTrue();
+        expect(set.length).toEqual(2);
+    })
+
+})
diff --git a/runtime/JavaScript/spec/IntervalSetSpec.js b/runtime/JavaScript/spec/IntervalSetSpec.js
index b40511e543..977aa45340 100644
--- a/runtime/JavaScript/spec/IntervalSetSpec.js
+++ b/runtime/JavaScript/spec/IntervalSetSpec.js
@@ -1,7 +1,6 @@
-import antlr4 from "../src/antlr4/index.node.js";
-const IntervalSet = antlr4.IntervalSet;
+import IntervalSet from "../src/antlr4/misc/IntervalSet.js";
 
-describe('IntervalSet', () => {
+describe('test IntervalSet', () => {
   it("computes interval set length", () => {
       const s1 = new IntervalSet();
       s1.addOne(20);