Third batch of neg -> warn test changes

Author: szymon-rd

compiler/test/dotty/tools/dotc/CompilationTests.scala

@@ -216,7 +216,10 @@ class CompilationTests {
   @Test def checkInitGlobal: Unit = {
     implicit val testGroup: TestGroup = TestGroup("checkInitGlobal")
     val options = defaultOptions.and("-Ysafe-init-global", "-Xfatal-warnings")
+    compileFilesInDir("tests/init-global/neg", options).checkExpectedErrors()
+    compileFilesInDir("tests/init-global/pos", options).checkCompile()
     compileFilesInDir("tests/init-global/neg", options, FileFilter.exclude(TestSources.negInitGlobalScala2LibraryTastyBlacklisted)).checkExpectedErrors()
+    compileFilesInDir("tests/init-global/warn", defaultOptions.and("-Ysafe-init-global"), FileFilter.exclude(TestSources.negInitGlobalScala2LibraryTastyBlacklisted)).checkWarnings()
     compileFilesInDir("tests/init-global/pos", options, FileFilter.exclude(TestSources.posInitGlobalScala2LibraryTastyBlacklisted)).checkCompile()
   }
 

tests/init-global/neg/i18628.scala renamed to tests/init-global/warn/i18628.scala

@@ -2,6 +2,6 @@ object Test:
   class Box(val x: Int)
 
   def recur(a: => Box, b: => Box): Int =
-    a.x + recur(a, b) + b.x // error // error
+    a.x + recur(a, b) + b.x // warn // warn
 
   recur(Box(1), Box(2))

tests/init-global/neg/i18628_2.scala renamed to tests/init-global/warn/i18628_2.scala

@@ -2,6 +2,6 @@ object Test:
   class Box(val x: Int)
 
   def recur(a: => Box, b: Box): Int =
-    a.x + recur(a, b) + b.x // error
+    a.x + recur(a, b) + b.x // warn
 
   recur(Box(1), Box(2))

tests/init-global/neg/i18628_3.scala renamed to tests/init-global/warn/i18628_3.scala

@@ -4,6 +4,6 @@ object Test:
   class Box(val x: Int)
 
   def recur(a: => Box, b: => Box): Int =
-    a.x + recur(a: @widen(5), b: @widen(5)) + b.x // error // error
+    a.x + recur(a: @widen(5), b: @widen(5)) + b.x // warn // warn
 
   recur(Box(1), Box(2))

tests/neg-custom-args/sourcepath2/hi/A.check

@@ -1,6 +1,7 @@
--- Error: tests/neg-custom-args/sourcepath2/hi/A.scala:3:6 -------------------------------------------------------------
-3 |class Hello { // error
+-- Warning: tests/neg-custom-args/sourcepath2/hi/A.scala:3:6 -----------------------------------------------------------
+3 |class Hello { // warn
   |      ^
   |      class Hello is in the wrong directory.
   |      It was declared to be in package <empty>
   |      But it is found in directory     hi
+No warnings can be incurred under -Werror.

tests/neg-custom-args/sourcepath2/hi/A.scala

@@ -1,5 +1,6 @@
 // Missing `package hi`
 
-class Hello { // error
+class Hello { // warn
   val x: Int = 1
 }
+// nopos-error: werror

tests/neg-deep-subtype/1828.scala

@@ -0,0 +1,5 @@
+-- Warning: tests/neg-macros/i9570.scala:15:21 -------------------------------------------------------------------------
+15 |        case '{HCons(_,$t)} => // warn (in .check file)
+   |                     ^
+   |             Use of `_` for lambda in quoted pattern. Use explicit lambda instead or use `$_` to match any term.
+No warnings can be incurred under -Werror.

tests/neg-deep-subtype/3324b.scala

@@ -12,15 +12,17 @@ object Macros {
     private def sizeImpl(e: Expr[HList], n:Int)(using qctx:Quotes): Expr[Int] = {
       import quotes.reflect.*
       e match {
-        case '{HCons(_,$t)} => // error if run with fatal warinings in BootstrappedOnlyCompilationTests
+        case '{HCons(_,$t)} => // warn (in .check file)
           sizeImpl(t,n+1)
         case '{HNil} => Expr(n)
       }
     }
 
     inline def size(inline expr: HList ): Int = {
       ${sizeImpl('expr,0)}
-    }
+    } 
 
   }
 }
+
+// nopos-error No warnings can be incurred under -Werror.