assert return the value of the asserted expression

kiss/src/kiss/Macros.hx

@@ -314,9 +314,17 @@ class Macros {
             } else {
                 b.str(basicMessage);
             };
-            b.callSymbol("unless", [
-                expression,
-                b.callSymbol("throw", [messageExp])
+            var letVal = b.symbol();
+            b.callSymbol("let", [
+                b.list([
+                    letVal,
+                    expression
+                ]),
+                b.callSymbol("if", [
+                    letVal,
+                    letVal,
+                    b.callSymbol("throw", [messageExp])
+                ])
             ]);
         };
 

kiss/src/test/cases/MacroTestCase.hx

@@ -44,8 +44,13 @@ class MacroTestCase extends Test {
     function testSetMacroVar() {
         _testSetMacroVar();
     }
+    */
 
     function testTryCatchWithoutDynamic () {
         _testTryCatchWithoutDynamic();
     }
+
+    function testAssertReturnsValue () {
+        _testAssertReturnsValue();
+    }
 }

kiss/src/test/cases/MacroTestCase.kiss

@@ -95,4 +95,7 @@
     (try (throw "intended") (catch [e] (ReaderExp.StrExp e))))
 
 (function _testTryCatchWithoutDynamic []
-    (Assert.equals "intended" (_testTryCatchWithoutDynamicMacro)))
+    (Assert.equals "intended" (_testTryCatchWithoutDynamicMacro)))
+
+(function _testAssertReturnsValue []
+    (Assert.equals true (assert true)))