Update all usages of PFFile.isDataAvailable to use properties.

Author: nlutsenko

Parse/PFFile.m

@@ -388,7 +388,7 @@ - (BFTask *)_downloadAsyncWithProgressBlock:(PFProgressBlock)progressBlock {
     @weakify(self);
     return [self.taskQueue enqueue:^id(BFTask *task) {
         @strongify(self);
-        if (self.isDataAvailable) {
+        if (self.dataAvailable) {
             [self _performProgressBlockAsync:progressBlock withProgress:100];
             return [BFTask taskWithResult:nil];
         }
@@ -417,7 +417,7 @@ - (BFTask *)_downloadStreamAsyncWithProgressBlock:(PFProgressBlock)progressBlock
     @weakify(self);
     return [self.taskQueue enqueue:^id(BFTask *task) {
         @strongify(self);
-        if (self.isDataAvailable) {
+        if (self.dataAvailable) {
             [self _performProgressBlockAsync:progressBlock withProgress:100];
             return [self _cachedDataStream];
         }

Tests/Unit/FileUnitTests.m

@@ -141,28 +141,28 @@ - (void)testContructors {
     XCTAssertEqualObjects(file.name, @"file");
     XCTAssertNil(file.url);
     XCTAssertTrue(file.dirty);
-    XCTAssertTrue(file.isDataAvailable);
+    XCTAssertTrue(file.dataAvailable);
 
     [self clearStagingAndTemporaryFiles];
     file = [PFFile fileWithData:[NSData data] contentType:@"content-type"];
     XCTAssertEqualObjects(file.name, @"file");
     XCTAssertNil(file.url);
     XCTAssertTrue(file.dirty);
-    XCTAssertTrue(file.isDataAvailable);
+    XCTAssertTrue(file.dataAvailable);
 
     [self clearStagingAndTemporaryFiles];
     file = [PFFile fileWithName:@"name" data:[NSData data]];
     XCTAssertEqualObjects(file.name, @"name");
     XCTAssertNil(file.url);
     XCTAssertTrue(file.dirty);
-    XCTAssertTrue(file.isDataAvailable);
+    XCTAssertTrue(file.dataAvailable);
 
     [self clearStagingAndTemporaryFiles];
     file = [PFFile fileWithName:nil contentsAtPath:[self sampleFilePath]];
     XCTAssertEqualObjects(file.name, @"file");
     XCTAssertNil(file.url);
     XCTAssertTrue(file.dirty);
-    XCTAssertTrue(file.isDataAvailable);
+    XCTAssertTrue(file.dataAvailable);
 
     [self clearStagingAndTemporaryFiles];
     NSError *error = nil;
@@ -171,22 +171,22 @@ - (void)testContructors {
     XCTAssertEqualObjects(file.name, @"file");
     XCTAssertNil(file.url);
     XCTAssertTrue(file.dirty);
-    XCTAssertTrue(file.isDataAvailable);
+    XCTAssertTrue(file.dataAvailable);
 
     [self clearStagingAndTemporaryFiles];
     file = [PFFile fileWithName:nil data:[NSData data] contentType:@"content-type"];
     XCTAssertEqualObjects(file.name, @"file");
     XCTAssertNil(file.url);
     XCTAssertTrue(file.dirty);
-    XCTAssertTrue(file.isDataAvailable);
+    XCTAssertTrue(file.dataAvailable);
 
     [self clearStagingAndTemporaryFiles];
     file = [PFFile fileWithName:nil data:[NSData data] contentType:@"content-type" error:&error];
     XCTAssertNil(error);
     XCTAssertEqualObjects(file.name, @"file");
     XCTAssertNil(file.url);
     XCTAssertTrue(file.dirty);
-    XCTAssertTrue(file.isDataAvailable);
+    XCTAssertTrue(file.dataAvailable);
 }
 
 - (void)testConstructorWithTooLargeData {