From f24e5f21363f5dfaf1d92c3499c574071c9078d5 Mon Sep 17 00:00:00 2001
From: jvican <jorgevc@fastmail.es>
Date: Wed, 7 Mar 2018 16:13:23 -0500
Subject: [PATCH] Add test to confirm leak is gone

The following commit adds the test case used to report #3143 in a big
projects with lots of cross versions and modules. The execution of the
test is instant!
---
 sbt/src/sbt-test/project/cross-source/build.sbt           | 8 ++++++++
 .../project/cross-source/p1/src/main/scala-2.10/B.scala   | 3 +++
 .../project/cross-source/p1/src/main/scala/A.scala        | 3 +++
 .../project/cross-source/p2/src/main/scala-2.10/B.scala   | 3 +++
 .../project/cross-source/p2/src/main/scala/A.scala        | 3 +++
 .../project/cross-source/p3/src/main/scala-2.10/B.scala   | 3 +++
 .../project/cross-source/p3/src/main/scala/A.scala        | 3 +++
 .../project/cross-source/p4/src/main/scala-2.10/B.scala   | 3 +++
 .../project/cross-source/p4/src/main/scala/A.scala        | 3 +++
 sbt/src/sbt-test/project/cross-source/test                | 3 +++
 10 files changed, 35 insertions(+)
 create mode 100644 sbt/src/sbt-test/project/cross-source/build.sbt
 create mode 100644 sbt/src/sbt-test/project/cross-source/p1/src/main/scala-2.10/B.scala
 create mode 100644 sbt/src/sbt-test/project/cross-source/p1/src/main/scala/A.scala
 create mode 100644 sbt/src/sbt-test/project/cross-source/p2/src/main/scala-2.10/B.scala
 create mode 100644 sbt/src/sbt-test/project/cross-source/p2/src/main/scala/A.scala
 create mode 100644 sbt/src/sbt-test/project/cross-source/p3/src/main/scala-2.10/B.scala
 create mode 100644 sbt/src/sbt-test/project/cross-source/p3/src/main/scala/A.scala
 create mode 100644 sbt/src/sbt-test/project/cross-source/p4/src/main/scala-2.10/B.scala
 create mode 100644 sbt/src/sbt-test/project/cross-source/p4/src/main/scala/A.scala
 create mode 100644 sbt/src/sbt-test/project/cross-source/test

diff --git a/sbt/src/sbt-test/project/cross-source/build.sbt b/sbt/src/sbt-test/project/cross-source/build.sbt
new file mode 100644
index 000000000..2f3894078
--- /dev/null
+++ b/sbt/src/sbt-test/project/cross-source/build.sbt
@@ -0,0 +1,8 @@
+val commonSettings = Seq(
+  crossScalaVersions := (0 to 6).map(i => s"2.10.$i") ++ (0 to 11).map(i => s"2.11.$i") ++ (0 to 2).map(i => s"2.12.$i")
+)
+
+val p1 = project.in(file("p1")).settings(commonSettings)
+val p2 = project.in(file("p2")).settings(commonSettings)
+val p3 = project.in(file("p3")).settings(commonSettings)
+val p4 = project.in(file("p4")).settings(commonSettings)
diff --git a/sbt/src/sbt-test/project/cross-source/p1/src/main/scala-2.10/B.scala b/sbt/src/sbt-test/project/cross-source/p1/src/main/scala-2.10/B.scala
new file mode 100644
index 000000000..fa8ad30ea
--- /dev/null
+++ b/sbt/src/sbt-test/project/cross-source/p1/src/main/scala-2.10/B.scala
@@ -0,0 +1,3 @@
+object B {
+  def show(what: String): String = s"String interpolation is ${what.toUpperCase}!"
+}
diff --git a/sbt/src/sbt-test/project/cross-source/p1/src/main/scala/A.scala b/sbt/src/sbt-test/project/cross-source/p1/src/main/scala/A.scala
new file mode 100644
index 000000000..8b55ead57
--- /dev/null
+++ b/sbt/src/sbt-test/project/cross-source/p1/src/main/scala/A.scala
@@ -0,0 +1,3 @@
+class A {
+  def show(what: String): Unit = println(what)
+}
diff --git a/sbt/src/sbt-test/project/cross-source/p2/src/main/scala-2.10/B.scala b/sbt/src/sbt-test/project/cross-source/p2/src/main/scala-2.10/B.scala
new file mode 100644
index 000000000..fa8ad30ea
--- /dev/null
+++ b/sbt/src/sbt-test/project/cross-source/p2/src/main/scala-2.10/B.scala
@@ -0,0 +1,3 @@
+object B {
+  def show(what: String): String = s"String interpolation is ${what.toUpperCase}!"
+}
diff --git a/sbt/src/sbt-test/project/cross-source/p2/src/main/scala/A.scala b/sbt/src/sbt-test/project/cross-source/p2/src/main/scala/A.scala
new file mode 100644
index 000000000..8b55ead57
--- /dev/null
+++ b/sbt/src/sbt-test/project/cross-source/p2/src/main/scala/A.scala
@@ -0,0 +1,3 @@
+class A {
+  def show(what: String): Unit = println(what)
+}
diff --git a/sbt/src/sbt-test/project/cross-source/p3/src/main/scala-2.10/B.scala b/sbt/src/sbt-test/project/cross-source/p3/src/main/scala-2.10/B.scala
new file mode 100644
index 000000000..fa8ad30ea
--- /dev/null
+++ b/sbt/src/sbt-test/project/cross-source/p3/src/main/scala-2.10/B.scala
@@ -0,0 +1,3 @@
+object B {
+  def show(what: String): String = s"String interpolation is ${what.toUpperCase}!"
+}
diff --git a/sbt/src/sbt-test/project/cross-source/p3/src/main/scala/A.scala b/sbt/src/sbt-test/project/cross-source/p3/src/main/scala/A.scala
new file mode 100644
index 000000000..8b55ead57
--- /dev/null
+++ b/sbt/src/sbt-test/project/cross-source/p3/src/main/scala/A.scala
@@ -0,0 +1,3 @@
+class A {
+  def show(what: String): Unit = println(what)
+}
diff --git a/sbt/src/sbt-test/project/cross-source/p4/src/main/scala-2.10/B.scala b/sbt/src/sbt-test/project/cross-source/p4/src/main/scala-2.10/B.scala
new file mode 100644
index 000000000..fa8ad30ea
--- /dev/null
+++ b/sbt/src/sbt-test/project/cross-source/p4/src/main/scala-2.10/B.scala
@@ -0,0 +1,3 @@
+object B {
+  def show(what: String): String = s"String interpolation is ${what.toUpperCase}!"
+}
diff --git a/sbt/src/sbt-test/project/cross-source/p4/src/main/scala/A.scala b/sbt/src/sbt-test/project/cross-source/p4/src/main/scala/A.scala
new file mode 100644
index 000000000..8b55ead57
--- /dev/null
+++ b/sbt/src/sbt-test/project/cross-source/p4/src/main/scala/A.scala
@@ -0,0 +1,3 @@
+class A {
+  def show(what: String): Unit = println(what)
+}
diff --git a/sbt/src/sbt-test/project/cross-source/test b/sbt/src/sbt-test/project/cross-source/test
new file mode 100644
index 000000000..17db5c8da
--- /dev/null
+++ b/sbt/src/sbt-test/project/cross-source/test
@@ -0,0 +1,3 @@
+# https://github.com/sbt/sbt/issues/3143
+> crossScalaVersions
+> +version