hamcrest FileExistenceMatcher, junit 4 TemporaryDirectory

lib/org/hamcrest/annotations.xml

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+<root>
+  <item name='org.hamcrest.SelfDescribing void describeTo(org.hamcrest.Description) 0'>
+    <annotation name='org.jetbrains.annotations.NotNull'/>
+  </item>
+  <item name='org.hamcrest.TypeSafeDiagnosingMatcher boolean matchesSafely(T, org.hamcrest.Description) 0'>
+    <annotation name='org.jetbrains.annotations.NotNull'/>
+  </item>
+  <item name='org.hamcrest.TypeSafeDiagnosingMatcher boolean matchesSafely(T, org.hamcrest.Description) 1'>
+    <annotation name='org.jetbrains.annotations.NotNull'/>
+  </item>
+</root>

platform/testFramework/testSrc/TemporaryDirectory.kt

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+/*
+ * Copyright 2000-2015 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jetbrains.testFramework
+
+import com.intellij.openapi.util.io.FileUtil
+import com.intellij.openapi.util.io.FileUtilRt
+import com.intellij.util.SmartList
+import org.junit.rules.ExternalResource
+import java.io.File
+
+public class TemporaryDirectory : ExternalResource() {
+  private val files = SmartList<File>()
+
+  override fun after() {
+    for (file in files) {
+      FileUtil.delete(file)
+    }
+    files.clear()
+  }
+
+  public fun newDirectory(): File {
+    val file = FileUtilRt.generateRandomTemporaryPath()
+    files.add(file)
+    return file;
+  }
+}

platform/testFramework/testSrc/matchers.kt

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+/*
+ * Copyright 2000-2015 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jetbrains.testFramework
+
+import org.hamcrest.Description
+import org.hamcrest.Factory
+import org.hamcrest.Matcher
+import org.hamcrest.TypeSafeDiagnosingMatcher
+import java.io.File
+
+public class FileExistenceMatcher(private val exists: Boolean) : TypeSafeDiagnosingMatcher<File>(javaClass<File>()) {
+  override fun matchesSafely(file: File, mismatchDescription: Description): Boolean {
+    if (exists == file.exists()) {
+      return true
+    }
+
+    mismatchDescription.appendText("is not a file")
+    return false
+  }
+
+  override fun describeTo(description: Description) {
+    description.appendText("an existing file")
+  }
+}
+
+public Factory fun exists(): Matcher<File> = FileExistenceMatcher(true)