add validation tests

Author: RichardWarburton

test/java/uk/co/real_logic/sbe/generation/java/JavaGeneratorTest.java

@@ -26,6 +26,7 @@
 import uk.co.real_logic.sbe.xml.MessageSchema;
 import uk.co.real_logic.sbe.xml.ParserOptions;
 
+import java.io.IOException;
 import java.lang.reflect.Method;
 import java.nio.ByteOrder;
 
@@ -218,4 +219,15 @@ public void shouldGenerateBasicMessage() throws Exception
  final Integer count = (Integer)groupFlyweight.getClass().getDeclaredMethod("count").invoke(groupFlyweight);
  assertThat(count, is(Integer.valueOf(0)));
  }
+
+ @Test(expected = IllegalArgumentException.class)
+ public void shouldValidateMissingBufferClass() throws IOException {
+ new JavaGenerator(ir, "dasdsads", outputManager);
+ }
+
+ @Test(expected = IllegalArgumentException.class)
+ public void shouldValidateNotImplementedBufferClass() throws IOException {
+ new JavaGenerator(ir, "java.nio.ByteBuffer", outputManager);
+ }
+
 }