DoNotSaveDefaultsTest (initial)

platform/configuration-store-impl/testSrc/DoNotSaveDefaults.kt

@@ -0,0 +1,44 @@
+package com.intellij.configurationStore
+
+import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.application.PathManager
+import com.intellij.openapi.application.impl.ApplicationImpl
+import com.intellij.openapi.components.stateStore
+import com.intellij.testFramework.ProjectRule
+import com.intellij.testFramework.runInEdtAndWait
+import com.intellij.util.io.delete
+import org.junit.ClassRule
+import org.junit.Test
+import java.nio.file.Paths
+
+class DoNotSaveDefaultsTest {
+  companion object {
+    @JvmField
+    @ClassRule
+    val projectRule = ProjectRule()
+
+    init {
+      Paths.get(PathManager.getConfigPath()).delete()
+    }
+  }
+
+  @Test
+  fun test() {
+    val app = ApplicationManager.getApplication() as ApplicationImpl
+    val directory = app.stateStore.stateStorageManager.expandMacros(APP_CONFIG)
+    val dirPath = Paths.get(directory)
+    try {
+      app.doNotSave(false)
+      runInEdtAndWait {
+        app.saveAll()
+      }
+    }
+    finally {
+      app.doNotSave(true)
+    }
+
+    println(directory)
+    println(printDirectoryTree(dirPath.toFile()))
+  }
+}
+

platform/configuration-store-impl/testSrc/FileTreePrinter.kt

@@ -0,0 +1,45 @@
+package com.intellij.configurationStore
+
+import java.io.File
+
+fun printDirectoryTree(folder: File): String {
+  if (!folder.isDirectory) {
+    throw IllegalArgumentException("folder is not a Directory")
+  }
+  val indent = 0
+  val sb = StringBuilder()
+  printDirectoryTree(folder, indent, sb)
+  return sb.toString()
+}
+
+private fun printDirectoryTree(folder: File, indent: Int, sb: StringBuilder) {
+  if (!folder.isDirectory) {
+    throw IllegalArgumentException("folder is not a Directory")
+  }
+  getIndentString(indent, sb)
+  sb.append("\u251c\u2500\u2500")
+  sb.append(folder.name)
+  sb.append("/")
+  sb.append("\n")
+  for (file in folder.listFiles()!!) {
+    if (file.isDirectory) {
+      printDirectoryTree(file, indent + 1, sb)
+    }
+    else {
+      printFile(file, indent + 1, sb)
+    }
+  }
+}
+
+private fun printFile(file: File, indent: Int, sb: StringBuilder) {
+  getIndentString(indent, sb)
+  sb.append("\u251c\u2500\u2500")
+  sb.append(file.name)
+  sb.append("\n")
+}
+
+private fun getIndentString(indent: Int, sb: StringBuilder) {
+  for (i in 0..indent - 1) {
+    sb.append("  ")
+  }
+}

platform/testFramework/src/com/intellij/testFramework/FixtureRule.kt

@@ -64,7 +64,7 @@ open class ApplicationRule : ExternalResource() {
 /**
  * Project created on request, so, could be used as a bare (only application).
  */
-class ProjectRule() : ApplicationRule() {
+class ProjectRule : ApplicationRule() {
   companion object {
     private var sharedProject: ProjectEx? = null
     private val projectOpened = AtomicBoolean()
@@ -242,7 +242,7 @@ fun Project.use(task: (Project) -> Unit) {
   }
 }
 
-class DisposeNonLightProjectsRule() : ExternalResource() {
+class DisposeNonLightProjectsRule : ExternalResource() {
   override fun after() {
     val projectManager = if (ApplicationManager.getApplication().isDisposed) null else ProjectManager.getInstance() as ProjectManagerImpl
     projectManager?.openProjects?.forEachGuaranteed {