Remarks

Dependencies:

• If application uses third party libraries or cocoa pods, then those libraries or pods are needed to be install for test as well.
• Test class (Test Suit) extends XCTestCase.

Get brushed up before starting:

• All test classes have two methods in common setUp & tearDown.
• setUp runs before every testcase & tearDown after every testcase.
• Test cases runs alphabetically.
• In Test Driven Development, it is good to create dummy test data first.
• Test case methods starts with “test” keyword.
• Test methods accept no parameters & return no value.

Appendix:

There are several other methods for comparing the expected result & actual result out of an operation. Some of those methods are listed below:

• XCTAssertNil(expression, comment) generates a failure if expression != nil.
• XCTAssertNotNil(expression, comment) generates a failure if expression = nil.
• XCTAssert(expression, comment) generates a failure if expression == false.
• XCTAssertTrue(expression, comment) generates a failure if expression == false.
• XCTAssertFalse(expression, comment) generates a failure if expression != false.
• XCTAssertEqualObjects(expression1, expression2, comment) generates a failure if expression1 is not equal to expression2.
• XCTAssertEqualObjects(expression1, expression2, comment) generates a failure if expression1 is equal to expression2.