Parse expression statements

2 files changed, 27 insertions, 0 deletions

diff --git a/src/test/java/org/shedlang/compiler/ast/UntypedNodeMatchers.java b/src/test/java/org/shedlang/compiler/ast/UntypedNodeMatchers.java
index bf98f5bc..a6f0bf82 100644
--- a/src/test/java/org/shedlang/compiler/ast/UntypedNodeMatchers.java
+++ b/src/test/java/org/shedlang/compiler/ast/UntypedNodeMatchers.java
@@ -16,6 +16,15 @@ public class UntypedNodeMatchers {
         return new UntypedCallNodeMatcher();
     }
 
+    public static Matcher<UntypedFunctionStatementNode> isUntypedExpressionStatementNode(
+        Matcher<UntypedExpressionNode> expression
+    ) {
+        return instanceOf(
+            UntypedExpressionStatementNode.class,
+            has("expression", x -> x.expression(), expression)
+        );
+    }
+
     public static Matcher<UntypedNamedArgNode> isUntypedNamedArgNode(
         String name,
         Matcher<UntypedExpressionNode> expression
diff --git a/src/test/java/org/shedlang/compiler/parser/ParserExpressionStatementTests.java b/src/test/java/org/shedlang/compiler/parser/ParserExpressionStatementTests.java
new file mode 100644
index 00000000..7d455f00
--- /dev/null
+++ b/src/test/java/org/shedlang/compiler/parser/ParserExpressionStatementTests.java
@@ -0,0 +1,18 @@
+package org.shedlang.compiler.parser;
+
+import org.junit.jupiter.api.Test;
+
+import static org.shedlang.compiler.ast.UntypedNodeMatchers.*;
+import static org.shedlang.compiler.parser.ParserTesting.parseString;
+import static org.zwobble.precisely.AssertThat.assertThat;
+
+public class ParserExpressionStatementTests {
+    @Test
+    public void canParseExpressionStatement() {
+        var source = "f;";
+
+        var node = parseString(source, Parser::parseFunctionStatement);
+
+        assertThat(node, isUntypedExpressionStatementNode(isUntypedReferenceNode("f")));
+    }
+}