No arithmetic for Chars (except for '-')

compiler/tests/org/jetbrains/jet/codegen/PrimitiveTypesTest.java

@@ -104,7 +104,8 @@ public class PrimitiveTypesTest extends CodegenTestCase {
     }
 
     public void testChar() throws Exception {
-        binOpTest("fun foo(a: Char, b: Char): Int = a + b", 'A', (char) 3, (int) 'D');
+        // '+' is not available for Chars
+        binOpTest("fun foo(a: Char, b: Char): Int = a - b", 'D', (char) 3, (int) 'A');
     }
 
     public void testFloat() throws Exception {

compiler/tests/org/jetbrains/jet/types/JetTypeCheckerTest.java

@@ -395,7 +395,7 @@ public class JetTypeCheckerTest extends JetLiteFixture {
         assertType("'1'.plus(1.flt)", "Float");
         assertType("'1'.plus(1.lng)", "Long");
         assertType("'1'.plus(1)", "Int");
-        assertType("'1'.plus('1')", "Int");
+        assertType("'1'.minus('1')", "Int"); // Plus is not available for char
 
         assertType("(1:Short).plus(1.dbl)", "Double");
         assertType("(1:Short).plus(1.flt)", "Float");