---
title: "XCTAssertEqual(_:_:_:file:line:)"
framework: XCTest
role: symbol
role_heading: Function
path: "xctest/xctassertequal(_:_:_:file:line:)"
---

# XCTAssertEqual(_:_:_:file:line:)

Asserts that two values are equal.

## Declaration

```swift
func XCTAssertEqual<T>(_ expression1: @autoclosure () throws -> T, _ expression2: @autoclosure () throws -> T, _ message: @autoclosure () -> String = "", file: StaticString = #filePath, line: UInt = #line) where T : Equatable
```

## Parameters

- `expression1`: An expression of type T, where T is Equatable.
- `expression2`: A second expression of type T, where T is Equatable.
- `message`: An optional description of a failure.
- `file`: The file where the failure occurs. The default is the filename of the test case where you call this function.
- `line`: The line number where the failure occurs. The default is the line number where you call this function.

## Discussion

Discussion Use this function to compare two non-optional values of the same type. Listing 1. Comparing Non-Optional Values Of The Same Type class FrameSizeTests: XCTestCase {     func testInitialFrameSize() {         let view = CustomView()         let expectedSize = CGSize(width: 640.0, height: 480.0)         XCTAssertEqual(view.frame.size, expectedSize, "Unexpected frame size.")     } } Listing 1 creates a new instance of a custom class called CustomView, and checks that its size is equal to CGSize(width: 640.0, height: 480.0).

## See Also

### Tests for Equality and Inequality

- [XCTAssertNotEqual(_:_:_:file:line:)](xctest/xctassertnotequal(_:_:_:file:line:).md)