Added simple png test

inspector-vc/src/test/java/org/oneedtech/inspect/vc/OB20Tests.java

@@ -39,6 +39,15 @@ public class OB20Tests {
 		});
 	}
 
+	@Test
+	void testSimplePNGPlainValid() {
+		assertDoesNotThrow(()->{
+			Report report = validator.run(Samples.OB20.PNG.SIMPLE_JSON_PNG.asFileResource());
+			if(verbose) PrintHelper.print(report, true);
+			assertValid(report);
+		});
+	}
+
 	@Nested
 	static class WarningTests {
 		@BeforeAll

inspector-vc/src/test/java/org/oneedtech/inspect/vc/Samples.java

@@ -48,5 +48,9 @@ public class Samples {
 			// original: test_graph:test_verify_with_redirection
 			public final static Sample WARNING_REDIRECTION_ASSERTION_JSON = new Sample("ob20/warning-with-redirection.json", true);
 		}
+
+		public static final class PNG {
+			public final static Sample SIMPLE_JSON_PNG = new Sample("ob20/simple-badge.png", true);
+		}
 	}
 }