Split test-quick test into two

sbt-app/src/sbt-test/tests/incremental-object-sources/test

@@ -0,0 +1,7 @@
+> testQuick
+
+# https://github.com/sbt/sbt/issues/5504
+$ copy-file changed/MathFunction.scala src/test/scala/MathFunction.scala
+> compile
+> debug
+-> testQuick MathFunctionTest

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

@@ -0,0 +1,10 @@
+Global / cacheStores := Seq.empty
+
+val scalatest = "org.scalatest" %% "scalatest" % "3.0.5"
+scalaVersion := "2.12.20"
+
+lazy val root = (project in file("."))
+  .settings(
+    libraryDependencies += scalatest % Test,
+    Test / parallelExecution := false
+  )

sbt-app/src/sbt-test/tests/incremental/test

@@ -7,7 +7,6 @@
 # Non-API change
 $ copy-file changed/A.scala src/main/scala/A.scala
 > compile
-$ sleep 2000
 # Create is run. Delete is not since it doesn't have src/main dependency.
 -> testQuick
 > testOnly Delete
@@ -19,7 +18,6 @@ $ sleep 2000
 
 $ copy-file changed/B.scala src/main/scala/B.scala
 > compile
-$ sleep 2000
 -> testQuick Create
 > testOnly Delete
 # Previous run of Create failed, re-run.
@@ -28,13 +26,6 @@ $ sleep 2000
 
 $ copy-file changed/Base.scala src/test/scala/Base.scala
 > Test/compile
-$ 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