From b018be7fb57e79b62e727c1fb00bfd474888ddf8 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Sat, 8 Jul 2023 21:25:13 +0100
Subject: Parse inequality

---
 .../compiler/ast/untyped/UntypedNodeMatchers.java   |  7 +++++++
 .../compiler/parser/ParserNotEqualTests.java        | 21 +++++++++++++++++++++
 2 files changed, 28 insertions(+)
 create mode 100644 src/test/java/org/shedlang/compiler/parser/ParserNotEqualTests.java

(limited to 'src/test/java')

diff --git a/src/test/java/org/shedlang/compiler/ast/untyped/UntypedNodeMatchers.java b/src/test/java/org/shedlang/compiler/ast/untyped/UntypedNodeMatchers.java
index bad7b9f7..bc237a00 100644
--- a/src/test/java/org/shedlang/compiler/ast/untyped/UntypedNodeMatchers.java
+++ b/src/test/java/org/shedlang/compiler/ast/untyped/UntypedNodeMatchers.java
@@ -79,6 +79,13 @@ public class UntypedNodeMatchers {
         );
     }
 
+    public static Matcher<UntypedExpressionNode> isUntypedNotEqualNode(
+        Matcher<UntypedExpressionNode> left,
+        Matcher<UntypedExpressionNode> right
+    ) {
+        return isUntypedBinaryOperationNode(UntypedBinaryOperator.NOT_EQUAL, left, right);
+    }
+
     public static Matcher<UntypedParamNode> isUntypedParamNode(
         String name,
         Matcher<UntypedTypeLevelExpressionNode> type
diff --git a/src/test/java/org/shedlang/compiler/parser/ParserNotEqualTests.java b/src/test/java/org/shedlang/compiler/parser/ParserNotEqualTests.java
new file mode 100644
index 00000000..b68dd08f
--- /dev/null
+++ b/src/test/java/org/shedlang/compiler/parser/ParserNotEqualTests.java
@@ -0,0 +1,21 @@
+package org.shedlang.compiler.parser;
+
+import org.junit.jupiter.api.Test;
+
+import static org.shedlang.compiler.ast.untyped.UntypedNodeMatchers.*;
+import static org.shedlang.compiler.parser.ParserTesting.parseString;
+import static org.zwobble.precisely.AssertThat.assertThat;
+
+public class ParserNotEqualTests {
+    @Test
+    public void canParseInequalityOfTwoPrimaryExpressions() {
+        var source = "1 != 2";
+
+        var node = parseString(source, Parser::parseTopLevelExpression);
+
+        assertThat(node, isUntypedNotEqualNode(
+            isUntypedIntLiteralNode(1),
+            isUntypedIntLiteralNode(2)
+        ));
+    }
+}
-- 
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