Add ScalaCheckSeedSuite

tests/shared/src/test/scala/munit/ScalaCheckSeedSuite.scala

@@ -0,0 +1,21 @@
+package munit
+
+import scala.collection.mutable
+import org.scalacheck.Prop.forAll
+
+// Regression test for https://github.com/scalameta/munit/issues/118
+final class ScalaCheckSeedSuite extends ScalaCheckSuite {
+
+  private val ints = mutable.Set.empty[Int]
+
+  property("generating int") {
+    forAll { (i: Int) =>
+      ints.add(i)
+      true
+    }
+  }
+
+  test("generated int are not all the same") {
+    assert(ints.size > 1)
+  }
+}