KMP implementation for StringBuilder and test c...

KMP implementation for StringBuilder and test case. Repaired
long-standing infinite loop in lastIndexOf.

1 files changed, 32 insertions, 0 deletions

diff --git a/test/files/run/stringbuilder.scala b/test/files/run/stringbuilder.scala
new file mode 100644
index 0000000000..eb0fccd067
--- /dev/null
+++ b/test/files/run/stringbuilder.scala
@@ -0,0 +1,32 @@
+object Test extends Application {
+  val str = "ABCDEFGHIJKLMABCDEFGHIJKLM"
+  type SB = {
+    def indexOf(str: String): Int
+    def indexOf(str: String, fromIndex: Int): Int
+    def lastIndexOf(str: String): Int
+    def lastIndexOf(str: String, fromIndex: Int): Int
+  }
+
+  import scala.collection.mutable.{ StringBuilder => ScalaStringBuilder }
+  import java.lang.{ StringBuilder => JavaStringBuilder }
+
+  val sbScala = new ScalaStringBuilder() append str
+  val sbJava = new JavaStringBuilder() append str
+  val sbs: List[SB] = List[SB](sbScala, sbJava)
+
+  def sameAnswers(f: (SB) => Int) = assert(f(sbScala) == f(sbJava))
+
+  sameAnswers(_.indexOf(""))
+  sameAnswers(_.indexOf("G"))
+  sameAnswers(_.indexOf("ABC"))
+  sameAnswers(_.indexOf("KLM"))
+  sameAnswers(_.indexOf("QZV"))
+  sameAnswers(_.indexOf("LMABC"))
+  sameAnswers(_.lastIndexOf(""))
+  sameAnswers(_.lastIndexOf("M"))
+  sameAnswers(_.lastIndexOf("ABCDEFG"))
+  sameAnswers(_.lastIndexOf("KLM"))
+  sameAnswers(_.lastIndexOf("QZV"))
+  sameAnswers(_.lastIndexOf("GHI", 22))
+  sameAnswers(_.lastIndexOf("KLM", 22))
+}
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