https://github.com/zxch3n/moon-expect

https://github.com/zxch3n/moon-expect

Last synced: 21 days ago
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• Host: GitHub
• URL: https://github.com/zxch3n/moon-expect
• Owner: zxch3n
• Created: 2024-02-06T14:54:41.000Z (9 months ago)
• Default Branch: main
• Last Pushed: 2024-09-18T13:28:15.000Z (about 2 months ago)
• Last Synced: 2024-10-04T16:22:31.515Z (about 1 month ago)
• Size: 36.1 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# expect for MoonBit

`expect` that works like [Jest/Vitest's expect](https://jestjs.io/docs/expect).

You can use it to create various assertions easily.

# Example Usage

```

expect("hello").equal("hello")

expect("hello").not().equal("hello") // abort

expect("hello").equal("hello1") // abort

expect("hello").not().equal("hello1") 

let a : Option[Int] = Some(1)

let b : Option[Int] = None

expect(a).to_be_some() 

expect(b).to_be_none() 

expect("hello").to_have_length(5)

expect("hello").not().to_have_length(6)

expect(1).to_be_less_than(4)

let a : Result[Int, Int] = Ok(1)

let b : Result[Int, Int] = Err(1)

expect(a).to_be_ok()

expect(b).to_be_err()

expect(1.0).close_to(1.0, 0.1)

```

## Example Error Messages

```

AssertionError: expected 1.0 to be close to 1.2 (±0.1)

- Expected: 

+ Received: 

- 1.2

+ 1.0

```

```

AssertionError: expected "hello" to equal "hello1"

- Expected: 

+ Received: 

- "hello1"

+ "hello"

```