Skip some frontend tests when xcode version doesn't match

infer/tests/frontend/objc/BlockTest.java

@@ -14,7 +14,7 @@ import static utils.matchers.DotFilesEqual.dotFileEqualTo;
 
 import com.google.common.collect.ImmutableList;
 
-import org.junit.Ignore;
+import org.junit.Assume;
 import org.junit.Rule;
 import org.junit.Test;
 
@@ -72,10 +72,11 @@ public class BlockTest {
         newDotFile, dotFileEqualTo(block_dotty));
   }
 
-  @Test @Ignore
+  @Test
   public void whenCaptureRunOnBlockReleaseThenDotFilesAreTheSame()
       throws InterruptedException, IOException, InferException {
 
+    Assume.assumeTrue(InferRunner.runsSupportedXCode());
     String block_src =
         "infer/tests/codetoanalyze/objc/frontend/block/block_release.m";
 

infer/tests/frontend/objc/NSAssertTest.java

@@ -14,7 +14,7 @@ import static utils.matchers.DotFilesEqual.dotFileEqualTo;
 
 import com.google.common.collect.ImmutableList;
 
-import org.junit.Ignore;
+import org.junit.Assume;
 import org.junit.Rule;
 import org.junit.Test;
 
@@ -32,10 +32,11 @@ public class NSAssertTest {
   public DebuggableTemporaryFolder folder = new DebuggableTemporaryFolder();
 
 
-  @Test @Ignore
+  @Test
   public void whenCaptureRunOnPropertyThenDotFilesAreTheSame()
       throws InterruptedException, IOException, InferException {
 
+    Assume.assumeTrue(InferRunner.runsSupportedXCode());
     String src = "infer/tests/codetoanalyze/objc/frontend/assertions/NSAssert_example.m";
 
     String dotty = "infer/tests/codetoanalyze/objc/frontend/assertions/NSAssert_example.dot";

infer/tests/utils/InferRunner.java

@@ -55,6 +55,8 @@ public class InferRunner {
   private static final String IPHONESIMULATOR_ISYSROOT_SUFFIX =
       "/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk";
 
+  private static final String CURRENT_XCODE_VERSION = "Xcode 7.0";
+
   private static HashMap<String, InferResults> inferResultsMap =
       new HashMap<String, InferResults>();
 
@@ -72,6 +74,21 @@ public class InferRunner {
     return line;
   }
 
+  private static String getXCodeVersion() throws IOException, InterruptedException {
+    ProcessBuilder pb = new ProcessBuilder("xcodebuild", "-version");
+    Process process = pb.start();
+    InputStream is = process.getInputStream();
+    InputStreamReader isr = new InputStreamReader(is);
+    BufferedReader br = new BufferedReader(isr);
+    String line = br.readLine();
+    process.waitFor();
+    return line;
+  }
+
+  public static boolean runsSupportedXCode() throws IOException, InterruptedException {
+    return InferRunner.getXCodeVersion().equals(CURRENT_XCODE_VERSION);
+  }
+
   private static ImmutableList<String> createInferJavaCommand(
       TemporaryFolder folder,
       ImmutableList<String> sourceFiles,