Parse negative ints

1 files changed, 19 insertions, 1 deletions

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));
+    }
 }