Add method checkpoint to trait Checkpoints for easy use of Checkpoint

[ndy2]

I added a method checkpoint to trait Checkpoints for easy use of Checkpoint.

I have some experience of other test frameworks of JVM familiy like Junit/assertj & kotest.
I thought that create Checkpoint & report it is quite verbose and tedious.

Thus, I introduce a checkpoint!
I found that like the trait Checkpoint is right place to place this method like other dsl helper traits in scalatest. (Inside, Matchers ...)

Full Usage Example :

class FourBasicOperationSpec extends AnyFlatSpec with Matchers with Checkpoints {

  it("four basic operation") {
    checkpoint { cp =>
      cp { 1 + 1 should equal(2) }
      cp { 2 + 2 should equal(4) }
    }

    checkpoint { cp =>
      cp { 1 - 1 should equal(0) }
      cp { 2 - 2 should equal(0) }
    }

   ...
  }
}

Inspired by

• assertj - soft assertions :https://assertj.github.io/doc/#assertj-core-assertSoftly-assertions
• kotest - soft-assertions : https://kotest.io/docs/assertions/soft-assertions.html

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[ndy2]

Hello, @cheeseng !
I have no idea why the compilation fail in scala 2.13,2.11, 3, js even the unit tests are all passed.
Can you give me some suggestion or comment on this PR?

[cheeseng]

@ndy2 Sorry for the late response, I'll take a look today and what's going on.

Cheers.

[cheeseng]

@ndy2 I managed to fix the compile errors:

cheeseng@4d2fcc5

But the unit tests are failing because of wrong line number check, I'll try to look into it further when possible.

[cheeseng]

@ndy2 I managed to fix the problem, I submitted the following PR to your fork:

ndy2#1

Hopefully after merging it should get your PR pass the CI here.

Cheers.

[ndy2]

I merged the PR in my fork.
Can I get approval for check the CI pass?