Replaying a Seed for ScalaCheck does not work as expected.

[khalid-reid-axisgroup]

Replaying a ScalaCheck does not produce the data causing the original failure. I've written up an explanation and a sample project to reproduce the problem here.

[cheeseng]

@khalid-reid-axisgroup I think it is related to this:

scalatest/scalatestplus-scalacheck#60

I'll try to see if I can get it merge and release a new version for scalatest+scalacheck for it.

[khalid-reid-axisgroup]

Thanks @cheeseng. I tried the solution you suggested and it works. See below:

[info] MyTest:
[info] - should work *** FAILED ***
[info]   TestFailedException was thrown during property evaluation.
[info]     Message: "[]" was not equal to "[1]"
[info]     Location: (MyTest.scala:15)
[info]     Occurred when passed generated values (
[info]       arg0 = Foo("", 280813621)
[info]     )
[info]   Init Seed: -4690408743289064788
[info] Run completed in 294 milliseconds.
[info] Total number of tests run: 1
[info] Suites: completed 1, aborted 0
[info] Tests: succeeded 0, failed 1, canceled 0, ignored 0, pending 0
[info] *** 1 TEST FAILED ***

Then set the seed:

[IJ]set ThisBuild/Test/testOptions += Tests.Argument(TestFrameworks.ScalaTest, "-S", "-4690408743289064788")

Then replay it:

[IJ]test
Foo(,280813621)
[info] MyTest:
[info] - should work *** FAILED ***
[info]   TestFailedException was thrown during property evaluation.
[info]     Message: "[]" was not equal to "[1]"
[info]     Location: (MyTest.scala:15)
[info]     Occurred when passed generated values (
[info]       arg0 = Foo("", 280813621)
[info]     )
[info]   Init Seed: -4690408743289064788
[info] Run completed in 295 milliseconds.
[info] Total number of tests run: 1
[info] Suites: completed 1, aborted 0
[info] Tests: succeeded 0, failed 1, canceled 0, ignored 0, pending 0
[info] *** 1 TEST FAILED ***

The generated data is now the same.