Parse positional arguments

1 files changed, 59 insertions, 0 deletions

diff --git a/src/test/java/org/shedlang/compiler/parser/ParserCallTests.java b/src/test/java/org/shedlang/compiler/parser/ParserCallTests.java
index df7cbfea..5345414f 100644
--- a/src/test/java/org/shedlang/compiler/parser/ParserCallTests.java
+++ b/src/test/java/org/shedlang/compiler/parser/ParserCallTests.java
@@ -39,4 +39,63 @@ public class ParserCallTests {
                 .withHasEffects(true)
         );
     }
+
+    @Test
+    public void canParseCallWithSinglePositionalArg() {
+        var source = "f(a)";
+
+        var node = parseString(source, Parser::parseTopLevelExpression);
+
+        assertThat(
+            node,
+            isUntypedCallNode()
+                .withArgs(
+                    isUntypedArgsNode()
+                        .withPositional(isSequence(
+                            isUntypedReferenceNode("a")
+                        ))
+                        .withNamed(isSequence())
+                )
+        );
+    }
+
+    @Test
+    public void canParseCallWithManyPositionalArgs() {
+        var source = "f(a, b, c)";
+
+        var node = parseString(source, Parser::parseTopLevelExpression);
+
+        assertThat(
+            node,
+            isUntypedCallNode()
+                .withArgs(
+                    isUntypedArgsNode()
+                        .withPositional(isSequence(
+                            isUntypedReferenceNode("a"),
+                            isUntypedReferenceNode("b"),
+                            isUntypedReferenceNode("c")
+                        ))
+                        .withNamed(isSequence())
+                )
+        );
+    }
+
+    @Test
+    public void argumentListCanHaveTrailingComma() {
+        var source = "f(a,)";
+
+        var node = parseString(source, Parser::parseTopLevelExpression);
+
+        assertThat(
+            node,
+            isUntypedCallNode()
+                .withArgs(
+                    isUntypedArgsNode()
+                        .withPositional(isSequence(
+                            isUntypedReferenceNode("a")
+                        ))
+                        .withNamed(isSequence())
+                )
+        );
+    }
 }