addresses compile error mentioned in #14332

Author: philwalk

compiler/test/dotty/tools/scripting/ExpressionTest.scala

@@ -27,13 +27,13 @@ class ExpressionTest:
   @Test def verifyImports: Unit =
     val expressionLines = List(
       "import java.nio.file.Paths",
-      """val cwd = Paths.get(""."")""",
-      """println(cwd.toFile.listFiles.toList.filter(_.isDirectory).size)""",
+      s"""println(Paths.get("\""."\"").toFile.listFiles.toList.filter(_.isDirectory).size)""",
     )
     val expression = expressionLines.mkString(";")
-    testExpression(expression){ result =>
+    val success = testExpression(expression){ result =>
       result.matches("[0-9]+") && result.toInt > 0
     }
+    assert(success)
 
   def getResult(expression: String): String =
     val cmd = s"bin/scala -e $expression"
@@ -42,7 +42,7 @@ class ExpressionTest:
     printf("stderr: %s\n", stderr.mkString("\n","\n",""))
     stdout.filter(_.nonEmpty).mkString("")
 
-  def testExpression(expression: String)(check: (result: String) => Boolean) = {
+  def testExpression(expression: String)(check: (result: String) => Boolean): Boolean = {
     val result = getResult(expression)
     check(result)
   }