SI-9170 More flexible SessionTest

SessionTest session text can include line continuations
and pasted text. Pasted script (which looks like a
double prompt) probably doesn't work.

This commit includes @retronym's SI-9170 one-liner.

1 files changed, 58 insertions, 0 deletions

diff --git a/test/files/run/t9170.scala b/test/files/run/t9170.scala
new file mode 100644
index 0000000000..25a0e84581
--- /dev/null
+++ b/test/files/run/t9170.scala
@@ -0,0 +1,58 @@
+
+import scala.tools.partest.SessionTest
+
+object Test extends SessionTest {
+
+  override def stripMargins = false
+
+  def session =
+"""Type in expressions to have them evaluated.
+Type :help for more information.
+
+scala> object Y { def f[A](a: => A) = 1 ; def f[A](a: => Either[Exception, A]) = 2 }
+<console>:7: error: double definition:
+def f[A](a: => A): Int at line 7 and
+def f[A](a: => Either[Exception,A]): Int at line 7
+have same type after erasure: (a: Function0)Int
+       object Y { def f[A](a: => A) = 1 ; def f[A](a: => Either[Exception, A]) = 2 }
+                                              ^
+
+scala> object Y { def f[A](a: => A) = 1 ; def f[A](a: => Either[Exception, A]) = 2 }
+<console>:7: error: double definition:
+def f[A](a: => A): Int at line 7 and
+def f[A](a: => Either[Exception,A]): Int at line 7
+have same type after erasure: (a: Function0)Int
+       object Y { def f[A](a: => A) = 1 ; def f[A](a: => Either[Exception, A]) = 2 }
+                                              ^
+
+scala> object Y {
+     |   def f[A](a: =>  A) = 1
+     |   def f[A](a: => Either[Exception, A]) = 2
+     | }
+<console>:9: error: double definition:
+def f[A](a: => A): Int at line 8 and
+def f[A](a: => Either[Exception,A]): Int at line 9
+have same type after erasure: (a: Function0)Int
+         def f[A](a: => Either[Exception, A]) = 2
+             ^
+
+scala> :pa
+// Entering paste mode (ctrl-D to finish)
+
+object Y {
+  def f[A](a: =>  A) = 1
+  def f[A](a: => Either[Exception, A]) = 2
+}
+
+// Exiting paste mode, now interpreting.
+
+<console>:9: error: double definition:
+def f[A](a: => A): Int at line 8 and
+def f[A](a: => Either[Exception,A]): Int at line 9
+have same type after erasure: (a: Function0)Int
+         def f[A](a: => Either[Exception, A]) = 2
+             ^
+
+scala> :quit"""
+}
+