From cf12234c6f3d022c5e0882a26e6cfd39b45e0abf Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Tue, 29 Sep 2015 23:43:45 +0100
Subject: Add builtin method calls with no arguments

---
 .../couscous/tests/interpreter/EvaluatorTests.java       |  8 ++++++++
 .../couscous/tests/interpreter/InterpreterTests.java     | 16 ++++++++--------
 2 files changed, 16 insertions(+), 8 deletions(-)

(limited to 'src/test/java')

diff --git a/src/test/java/org/zwobble/couscous/tests/interpreter/EvaluatorTests.java b/src/test/java/org/zwobble/couscous/tests/interpreter/EvaluatorTests.java
index dbf20f8..6aee7d5 100644
--- a/src/test/java/org/zwobble/couscous/tests/interpreter/EvaluatorTests.java
+++ b/src/test/java/org/zwobble/couscous/tests/interpreter/EvaluatorTests.java
@@ -13,6 +13,7 @@ import com.google.common.collect.ImmutableMap;
 import static org.junit.Assert.assertEquals;
 import static org.zwobble.couscous.ast.Assignment.assign;
 import static org.zwobble.couscous.ast.LiteralNode.literal;
+import static org.zwobble.couscous.ast.MethodCallNode.methodCall;
 import static org.zwobble.couscous.interpreter.Evaluator.eval;
 import static org.zwobble.couscous.tests.util.ExtraAsserts.assertThrows;
 
@@ -49,6 +50,13 @@ public class EvaluatorTests {
         assertEquals(new ConditionMustBeBoolean(new IntegerValue(1)), exception);
     }
     
+    @Test
+    public void canCallMethodWithNoArgumentsOnBuiltin() {
+        val result = eval(emptyEnvironment(),
+            methodCall(literal("hello"), "length"));
+        assertEquals(new IntegerValue(5), result);
+    }
+    
     private static Environment emptyEnvironment() {
         return new Environment(ImmutableMap.of());
     }
diff --git a/src/test/java/org/zwobble/couscous/tests/interpreter/InterpreterTests.java b/src/test/java/org/zwobble/couscous/tests/interpreter/InterpreterTests.java
index 54abd8a..bfdadf8 100644
--- a/src/test/java/org/zwobble/couscous/tests/interpreter/InterpreterTests.java
+++ b/src/test/java/org/zwobble/couscous/tests/interpreter/InterpreterTests.java
@@ -28,6 +28,14 @@ import static org.zwobble.couscous.values.UnitValue.UNIT;
 import lombok.val;
 
 public class InterpreterTests {
+    @Test
+    public void methodWithNoStatementsReturnsUnit() {
+        val method = staticMethod("hello");
+        val result = runMethod(method);
+        
+        assertEquals(UNIT, result);
+    }
+    
     @Test
     public void canReturnLiteralValue() {
         val method = staticMethod("hello")
@@ -69,14 +77,6 @@ public class InterpreterTests {
         
         assertEquals(new StringValue("[updated value]"), result);
     }
-    
-    @Test
-    public void methodWithNoStatementsReturnsUnit() {
-        val method = staticMethod("hello");
-        val result = runMethod(method);
-        
-        assertEquals(UNIT, result);
-    }
 
     private InterpreterValue runMethod(MethodNode.MethodNodeBuilder methodBuilder, InterpreterValue... arguments) {
         val method = methodBuilder.build();
-- 
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