Add checkConfig override to error message.

typelevel · May 2, 2024 · 2a6a4b0 · 2a6a4b0
1 parent 6a97916
commit 2a6a4b0
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Showing 2 changed files with 16 additions and 4 deletions.
diff --git a/modules/scalacheck/shared/src/main/scala/weaver/scalacheck/Checkers.scala b/modules/scalacheck/shared/src/main/scala/weaver/scalacheck/Checkers.scala
@@ -165,7 +165,10 @@ trait Checkers {
         val ith = succeeded + discarded + 1
         val failure = Expectations.Helpers
           .failure(
-            s"Property test failed on try $ith with seed ${seed} and input $input")
+            s"""Property test failed on try $ith with seed $seed and input $input.
+                |You can reproduce this by adding the following override to your suite:
+                |
+                |override def checkConfig = super.checkConfig.withInitialSeed($seed.toOption)""".stripMargin)
           .and(exp)
         copy(failure = Some(failure))
       } else this

diff --git a/modules/scalacheck/shared/src/test/scala/weaver/scalacheck/PropertyDogFoodTest.scala b/modules/scalacheck/shared/src/test/scala/weaver/scalacheck/PropertyDogFoodTest.scala
@@ -36,9 +36,18 @@ object PropertyDogFoodTest extends IOSuite {
             ("2", "0")
           }
 
-        val expectedMessage =
-          s"""Property test failed on try $attempt with seed Seed.fromBase64("$seed") and input $value"""
-        expect(log.contains(expectedMessage))
+        val actualLines = log.split(System.lineSeparator()).toList
+        val expectedLines = s"""foobar
+          |Property test failed on try $attempt with seed Seed.fromBase64("$seed") and input $value.
+          |You can reproduce this by adding the following override to your suite:
+          |
+          |override def checkConfig = super.checkConfig.withInitialSeed(Seed.fromBase64("$seed").toOption)"""
+          .stripMargin
+          .linesIterator.toList
+
+        forEach(actualLines.zip(expectedLines))({ case (actual, expected) =>
+          expect(actual.contains(expected))
+        })
       }
     }
   }