SI-7969 Refactor to trait with test

Make REPL classes testable in junit. Test the Tabulator.

1 files changed, 41 insertions, 0 deletions

diff --git a/test/junit/scala/tools/nsc/interpreter/TabulatorTest.scala b/test/junit/scala/tools/nsc/interpreter/TabulatorTest.scala
new file mode 100644
index 0000000000..e252942f89
--- /dev/null
+++ b/test/junit/scala/tools/nsc/interpreter/TabulatorTest.scala
@@ -0,0 +1,41 @@
+package scala.tools.nsc
+package interpreter
+
+//import org.junit.Assert._
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
+
+case class Tabby(width: Int = 80, isAcross: Boolean = false, marginSize: Int = 3) extends Tabulator
+
+@RunWith(classOf[JUnit4])
+class TabulatorTest {
+
+  @Test def oneliner() = {
+    val sut   = Tabby()
+    val items = List("a", "b", "c")
+    val res   = sut tabulate items
+    assert(res.size == 1)
+    assert(res(0).size == 1)
+    assert(res(0)(0) startsWith "a")
+    assert(res(0)(0) endsWith "c")
+  }
+  @Test def twoliner() = {
+    val sut   = Tabby(width = 40)
+    val items = List("a" * 15, "b" * 15, "c" * 15)
+    val res   = sut tabulate items
+    assert(res.size == 2)
+    assert(res(0).size == 2)
+    assert(res(1).size == 2)          // trailing empty strings
+    assert(res(1)(0) startsWith "b")
+  }
+  @Test def twolinerx() = {
+    val sut   = Tabby(width = 40, isAcross = true)
+    val items = List("a" * 15, "b" * 15, "c" * 15)
+    val res   = sut tabulate items
+    assert(res.size == 2)
+    assert(res(0).size == 2)
+    assert(res(1).size == 1)          // no trailing empty strings
+    assert(res(1)(0) startsWith "c")
+  }
+}