Unit Tests - Checking the background queue

Library/MagicalRecordStack/MagicalRecordStack+Actions.h

@@ -26,7 +26,7 @@ dispatch_queue_t MR_saveQueue(void);
 /**
  *  Synchronously saves the default managed object context (if there is one) and any parent contexts.
  *
- *  @param block Make changes to CoreData objects in this block using the passed in localContext. The block will be performed on a background queue, and once complete, the context will be saved.
+ *  @param block Make changes to CoreData objects in this block using the passed in localContext. The block itself is not guaranteed to run on any particular background thread/queue, and once complete, the context will be saved.
  *
  *  @return Success state of the save operation
  */
@@ -37,7 +37,7 @@ dispatch_queue_t MR_saveQueue(void);
  *
  *  Synchronously saves the default managed object context (if there is one) and any parent contexts.
  *
- *  @param block Make changes to CoreData objects in this block using the passed in localContext. The block will be performed on a background queue, and once complete, the context will be saved.
+ *  @param block Make changes to CoreData objects in this block using the passed in localContext. The block itself is not guaranteed to run on any particular background thread/queue, the context will be saved.
  *  @param error Pass in an NSError by reference to receive any errors encountered during the save.
  *
  *  @return Whether the save was successful

Tests/Core/MagicalRecord+ActionsTests.m

@@ -215,4 +215,16 @@ - (void)testAsynchronousSaveActionMakesUpdatesToEntitiesAvailableToTheDefaultCon
     expect([fetchedObject valueForKey:kTestAttributeKey]).will.beFalsy();
 }
 
+- (void)testAsynchronousSaveActionPerformedOnBackgroundQueue
+{
+    MagicalRecordStack *currentStack = self.stack;
+
+    [currentStack saveWithBlock:^(NSManagedObjectContext *localContext) {
+        expect([NSThread currentThread]).toNot.equal([NSThread mainThread]);
+
+    } completion:^(BOOL success, NSError *error) {
+        expect([NSThread currentThread]).to.equal([NSThread mainThread]);
+    }];
+}
+
 @end