Enable preview in pos/i18533 tests

Author: hamzaremmal

compiler/test/dotty/tools/utils.scala

@@ -117,5 +117,5 @@ class ToolArgsTest:
   @Test def `missing tool is absent`: Unit = assertEquals(Nil, toolArgsFor(ToolName.Javac, None)("// test: -hey" :: Nil))
   @Test def `multitool is present`: Unit =
     assertEquals("-hey" :: Nil, toolArgsFor(ToolName.Test, None)("// test: -hey" :: "// javac: -d /tmp" :: Nil))
-    assertEquals("-d" :: "/tmp" :: Nil, toolArgsFor(ToolName.Javac, None)("// test: -hey" :: "// javac: -d /tmp" :: Nil))
+    assertEquals("-d" :: "/tmp" :: Nil, toolArgsFor(ToolName.Java, None)("// test: -hey" :: "// java: -d /tmp" :: Nil))
 end ToolArgsTest

tests/pos/i18533/Cat.java

@@ -1,3 +1,6 @@
+//> using javacOpt --enable-preview --source 17
+//> test: -jvm 17+
+
 package i18533;
 
 public final class Cat extends Pet {

tests/pos/i18533/Dog.java

@@ -1,3 +1,6 @@
+//> using javacOpt --enable-preview --source 17
+//> test: -jvm 17+
+
 package i18533;
 
 public non-sealed class Dog extends Pet {

tests/pos/i18533/Pet.java

@@ -1,3 +1,6 @@
+//> using javacOpt --enable-preview --source 17
+//> test: -jvm 17+
+
 package i18533;
 
 public sealed class Pet permits Cat, Dog {

tests/run/t9915/C_1.java

@@ -1,6 +1,3 @@
-/*
- * javac: -encoding UTF-8
- */
 public class C_1 {
     public static final String NULLED = "X\000ABC";
     public static final String SUPPED = "𐒈𐒝𐒑𐒛𐒐𐒘𐒕𐒖";