From 370e147a121a57ec9e14542a443ab96e3573d5d3 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Wed, 5 Jul 2023 21:15:51 +0100
Subject: Parse negative ints

---
 .../compiler/parser/ParserIntLiteralTests.java       | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

(limited to 'src/test/java')

diff --git a/src/test/java/org/shedlang/compiler/parser/ParserIntLiteralTests.java b/src/test/java/org/shedlang/compiler/parser/ParserIntLiteralTests.java
index 61908772..bc0dcad9 100644
--- a/src/test/java/org/shedlang/compiler/parser/ParserIntLiteralTests.java
+++ b/src/test/java/org/shedlang/compiler/parser/ParserIntLiteralTests.java
@@ -7,7 +7,7 @@ import static org.shedlang.compiler.parser.ParserTesting.parseString;
 import static org.zwobble.precisely.AssertThat.assertThat;
 
 public class ParserIntLiteralTests {
-    // TODO: negatives
+    // TODO: forbid negative zero?
     // TODO: forbid leading zeroes?
 
     @Test
@@ -36,4 +36,22 @@ public class ParserIntLiteralTests {
 
         assertThat(node, isUntypedIntLiteralNode(723));
     }
+
+    @Test
+    public void canParseSingleDigitNegativeInt() {
+        var source = "-7";
+
+        var node = parseString(source, Parser::parseTopLevelExpression);
+
+        assertThat(node, isUntypedIntLiteralNode(-7));
+    }
+
+    @Test
+    public void canParseManyDigitNegativeInt() {
+        var source = "-723";
+
+        var node = parseString(source, Parser::parseTopLevelExpression);
+
+        assertThat(node, isUntypedIntLiteralNode(-723));
+    }
 }
-- 
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