Fix uncaught UnsupportedOperationException

Author: cjneasbi

dockerfile-image-update/src/main/java/com/salesforce/dockerfileimageupdate/process/ForkableRepoValidator.java

@@ -108,9 +108,9 @@ protected boolean hasNoChanges(GHContent content, GitForkBranch gitForkBranch) {
                     return false;
                 }
             }
-        } catch (IOException exception) {
+        } catch (IOException | UnsupportedOperationException exception) {
             log.warn("Failed while checking if there are changes in {}. Skipping... exception: {}",
-                    content.getPath(), exception.getMessage());
+                    content.getPath(), exception.getMessage(), exception);
         }
         return true;
     }

dockerfile-image-update/src/test/java/com/salesforce/dockerfileimageupdate/process/ForkableRepoValidatorTest.java

@@ -232,7 +232,7 @@ public void testHasNoChanges(String contentText, String imageName, String imageT
     }
 
     @Test
-    public void testHasNoChangesIfExceptionThrownDuringRead() throws IOException {
+    public void testHasNoChangesIfIOExceptionThrownDuringRead() throws IOException {
         DockerfileGitHubUtil dockerfileGitHubUtil = mock(DockerfileGitHubUtil.class);
         GHRepository repo = mock(GHRepository.class);
         ForkableRepoValidator validator = new ForkableRepoValidator(dockerfileGitHubUtil);
@@ -243,4 +243,17 @@ public void testHasNoChangesIfExceptionThrownDuringRead() throws IOException {
 
         assertTrue(validator.hasNoChanges(content, gitForkBranch));
     }
+    
+    @Test
+    public void testHasNoChangesIfUnsupportedOperationExceptionThrownDuringRead() throws IOException {
+        DockerfileGitHubUtil dockerfileGitHubUtil = mock(DockerfileGitHubUtil.class);
+        GHRepository repo = mock(GHRepository.class);
+        ForkableRepoValidator validator = new ForkableRepoValidator(dockerfileGitHubUtil);
+        GHContent content = mock(GHContent.class);
+        GitForkBranch gitForkBranch = new GitForkBranch("name", "tag", null, "");
+
+        when(content.read()).thenThrow(new UnsupportedOperationException("Unrecognized encoding: none"));
+
+        assertTrue(validator.hasNoChanges(content, gitForkBranch));
+    }
 }