Parse effect params

2 files changed, 25 insertions, 0 deletions

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 cf28b0ad..e0597387 100644
--- a/src/test/java/org/shedlang/compiler/ast/untyped/UntypedNodeMatchers.java
+++ b/src/test/java/org/shedlang/compiler/ast/untyped/UntypedNodeMatchers.java
@@ -118,6 +118,13 @@ public class UntypedNodeMatchers {
         );
     }
 
+    public static Matcher<UntypedTypeLevelParamNode> isUntypedEffectParamNode(String name) {
+        return instanceOf(
+            UntypedEffectParamNode.class,
+            has("name", x -> x.name(), equalTo(name))
+        );
+    }
+
     public static Matcher<UntypedExpressionNode> isUntypedEqualsNode(
         Matcher<UntypedExpressionNode> left,
         Matcher<UntypedExpressionNode> right
diff --git a/src/test/java/org/shedlang/compiler/parser/ParserEffectParamTests.java b/src/test/java/org/shedlang/compiler/parser/ParserEffectParamTests.java
new file mode 100644
index 00000000..dfd970bf
--- /dev/null
+++ b/src/test/java/org/shedlang/compiler/parser/ParserEffectParamTests.java
@@ -0,0 +1,18 @@
+package org.shedlang.compiler.parser;
+
+import org.junit.jupiter.api.Test;
+
+import static org.shedlang.compiler.ast.untyped.UntypedNodeMatchers.isUntypedEffectParamNode;
+import static org.shedlang.compiler.parser.ParserTesting.parseString;
+import static org.zwobble.precisely.AssertThat.assertThat;
+
+public class ParserEffectParamTests {
+    @Test
+    public void canParseEffectParam() {
+        var source = "!E";
+
+        var node = parseString(source, Parser::parseTypeLevelParam);
+
+        assertThat(node, isUntypedEffectParamNode("E"));
+    }
+}