Improve test of string printing

Author: som-snytt

compiler/src/scala/quoted/runtime/impl/printers/SourceCode.scala

@@ -4,6 +4,7 @@ package runtime.impl.printers
 import dotty.tools.dotc.util.Chars
 
 import scala.annotation.switch
+import scala.collection.mutable
 
 import java.lang.StringBuilder
 
@@ -1504,8 +1505,8 @@ object SourceCode {
       else
         qSc + text + qSc
 
-    private[this] val names = collection.mutable.Map.empty[Symbol, String]
-    private[this] val namesIndex = collection.mutable.Map.empty[String, Int]
+    private val names = collection.mutable.Map.empty[Symbol, String]
+    private val namesIndex = collection.mutable.Map.empty[String, Int]
 
     private def splicedName(sym: Symbol): Option[String] = {
       if sym.owner.isClassDef then None

compiler/test/dotty/tools/dotc/printing/PrintingTest.scala

@@ -1,6 +1,7 @@
 package dotty
 package tools
 package dotc
+package printing
 
 import scala.language.unsafeNulls
 

tests/printing/untyped/strings.check

@@ -0,0 +1,8 @@
+[[syntax trees at end of                    parser]] // tests/printing/untyped/strings.scala
+package <empty> {
+  class C {
+    def chars = "\b\t\n\f\r\"\'\\a\u0003"
+    def greeting = "hello, world"
+  }
+}
+

tests/printing/untyped/strings.scala

@@ -0,0 +1,4 @@
+
+class C:
+  def chars = "\b\t\n\f\r\"\'\\\u0061\u0003"
+  def greeting = "hello, world"