Separate object init tests from class init tests

Author: liufengyun

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

@@ -274,6 +274,14 @@ class CompilationTests {
     compileFilesInDir("tests/explicit-nulls/run", explicitNullsOptions)
   }.checkRuns()
 
+  // initialization tests
+  @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()
+  }
+
   // initialization tests
   @Test def checkInit: Unit = {
     implicit val testGroup: TestGroup = TestGroup("checkInit")

tests/init/neg/context-sensitivity.scala renamed to tests/init-global/neg/context-sensitivity.scala

@@ -5,7 +5,7 @@ enum Enum:
 def g(b: Enum.B): Int = b.foo()
 
 object Enum:
-  object nested:               // error
+  object nested:
     val a: Enum = Case
 
   val b: Enum = f(nested.a)

tests/init/neg/global-by-name.scala renamed to tests/init-global/neg/global-by-name.scala

@@ -0,0 +1,12 @@
+enum Enum:
+  case Case
+
+object Enum:
+  object nested:
+    val a: Enum = Case
+
+  val b: Enum = f(nested.a)
+
+  def f(e: Enum): Enum = e
+
+@main def main(): Unit = println(Enum.b)