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https://github.com/kuniwak/mirrordiffkit

Graduation from messy XCTAssertEqual messages.
https://github.com/kuniwak/mirrordiffkit

diff ios library macos swift testing tvos watchos

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Graduation from messy XCTAssertEqual messages.

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README

        

![MirrorDiffKit](https://raw.githubusercontent.com/Kuniwak/MirrorDiffKit/master/Documentation/Images/logo.png)
=============

A tool for providing the 2 features for efficient testing:

- Output diff between 2 any types
- Default implementation of Equatable for any types

![](./Documentation/Images/XcodePreview.png)

Usage
-----

### `diff(between: T, and: T)`

```swift
import MirrorDiffKit

// Input 2 structs or classes implements Equatable:
let a = Example(
key1: "I'm not changed",
key2: "I'm deleted"
)
let b = Example(
key1: "I'm not changed",
key2: "I'm inserted"
)

XCTAssertEqual(a, b, diff(between: a, and: b))

// XCTAssertEqual failed: ("Example(key1: "I\'m not changed", key2: "I\'m deleted")") is not equal to ("Example(key1: "I\'m not changed", key2: "I\'m inserted")") -
// struct Example {
// key1: "I'm not changed"
// - key2: "I'm deleted"
// + key2: "I'm inserted"
// }
```

### `Any =~ Any` and `Any !~ Any`

```swift
import MirrorDiffKit

a = NotEquatable(
key1: "I'm not changed",
key2: "I'm deleted"
)
b = NotEquatable(
key1: "I'm not changed",
key2: "I'm inserted"
)

XCTAssert(a =~ b, diff(between: a, and: b))

// XCTAssertTrue failed -
// struct NotEquatable {
// key1: "I'm not changed"
// - key2: "I'm deleted"
// + key2: "I'm inserted"
// }
```

Installation
------------

```
.package(url: "https://github.com/Kuniwak/MirrorDiffKit.git")
```

License
-------

[MIT License](./LICENSE)