added snippets for unit testing methods

xae.m

@@ -0,0 +1,8 @@
+// XCT Assert Equals
+// Assert equals for XCTest
+//
+// Platform: All
+// Language: Objective-C
+// Completion Scope: Function or Method
+
+XCTAssertEqual(<#expected#>, <#actual#>, <#message#>);

xan.m

@@ -0,0 +1,8 @@
+// XCT Assert Nil
+// Assert for XCTest
+//
+// Platform: All
+// Language: Objective-C
+// Completion Scope: Function or Method
+
+XCTAssertNil(<#expression#>, <#message#>);

xann.m

@@ -0,0 +1,8 @@
+// XCT Assert Not Nil
+// Assert not nil for XCTest
+//
+// Platform: All
+// Language: Objective-C
+// Completion Scope: Function or Method
+
+XCTAssertNotNil(<#expression#>, <#message#>);

xat.m

@@ -0,0 +1,8 @@
+// XCT Assert True
+// Assert true for XCTest
+//
+// Platform: All
+// Language: Objective-C
+// Completion Scope: Function or Method
+
+XCTAssertTrue(<#expression#>, <#message#>);