Merge pull request #7031 from gontard/backport_6903_to_1.8.x

Backport #6903 to 1.8.x

DEVELOPING.md

@@ -151,14 +151,14 @@ suite with `sbt testOnly`
 
 #### Integration tests
 
-Scripted integration tests reside in `sbt/src/sbt-test` and are
+Scripted integration tests reside in `sbt-app/src/sbt-test` and are
 written using the same testing infrastructure sbt plugin authors can
 use to test their own plugins with sbt. You can read more about this
 style of tests [here](https://www.scala-sbt.org/1.0/docs/Testing-sbt-plugins).
 
 You can run the integration tests with the `sbt scripted` sbt
 command. To run a single test, such as the test in
-`sbt/src/sbt-test/project/global-plugin`, simply run:
+`sbt-app/src/sbt-test/project/global-plugin`, simply run:
 
     sbt "scripted project/global-plugin"
 

main/src/main/scala/sbt/Defaults.scala

@@ -1393,11 +1393,10 @@ object Defaults extends BuildCommon {
               val x = {
                 import analysis.{ apis, relations => rel }
                 rel.internalClassDeps(c).map(intlStamp(_, analysis, s + c)) ++
-                  rel.externalDeps(c).map(stamp) +
+                  rel.externalDeps(c).map(stamp) ++
-                  (apis.internal.get(c) match {
+                  rel.productClassName.reverse(c).flatMap { pc =>
-                    case Some(x) => x.compilationTimestamp
+                    apis.internal.get(pc).map(_.compilationTimestamp)
-                    case _       => Long.MinValue
+                  } + Long.MinValue
-                  })
               }.max
               if (x != Long.MinValue) {
                 stamps(c) = x

sbt-app/src/sbt-test/tests/test-quick/build.sbt

@@ -1,9 +1,8 @@
 val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
-val scalaxml = "org.scala-lang.modules" %% "scala-xml" % "1.1.1"
 ThisBuild / scalaVersion := "2.12.12"
 
 lazy val root = (project in file("."))
   .settings(
-    libraryDependencies ++= List(scalaxml, scalatest),
+    libraryDependencies += scalatest % Test,
     Test / parallelExecution := false
   )

sbt-app/src/sbt-test/tests/test-quick/changed/MathFunction.scala

@@ -0,0 +1,3 @@
+object MathFunction {
+  def times2(i: Int): Int = 2 * 2
+}

sbt-app/src/sbt-test/tests/test-quick/src/main/scala/MathFunction.scala

@@ -0,0 +1,3 @@
+object MathFunction {
+  def times2(i: Int): Int = i * 2
+}

sbt-app/src/sbt-test/tests/test-quick/src/test/scala/Create.scala

@@ -1,11 +1,10 @@
 import org.scalatest.FlatSpec
-import org.scalatest.matchers.ShouldMatchers
 
-class Create extends FlatSpec with ShouldMatchers with Base {
+class Create extends FlatSpec with Base {
   "a file" should "not exist" in {
 		A(new B).foo
-		marker.exists should equal(false)
+		assert(marker.exists == false)
-		marker.createNewFile() should equal (true)
+		assert(marker.createNewFile() == true)
   }
 
 }

sbt-app/src/sbt-test/tests/test-quick/src/test/scala/Delete.scala

@@ -1,9 +1,8 @@
 import org.scalatest.FlatSpec
-import org.scalatest.matchers.ShouldMatchers
 
-class Delete extends FlatSpec with ShouldMatchers with Base {
+class Delete extends FlatSpec with Base {
   "a file" should "exist" in {
-		marker.exists should equal(true)
+		assert(marker.exists == true)
 		marker.delete()
   }
 

sbt-app/src/sbt-test/tests/test-quick/src/test/scala/MathFunctionSpec.scala

@@ -0,0 +1,7 @@
+import org.scalatest.FlatSpec
+
+class MathFunctionTest extends FlatSpec {
+  "times2" should "double the input" in {
+    assert(MathFunction.times2(4) == 8)
+  }
+}

sbt-app/src/sbt-test/tests/test-quick/test

@@ -32,3 +32,9 @@ $ sleep 2000
 -> testQuick Create
 > testQuick Delete
 > testQuick Create
+
+# https://github.com/sbt/sbt/issues/5504
+$ copy-file changed/MathFunction.scala src/test/scala/MathFunction.scala
+> compile
+$ sleep 2000
+-> testQuick MathFunctionTest