fix RcProducerTest in All Tests

platform/testFramework/extensions/src/com/intellij/testFramework/assertions/Assertions.java

@@ -20,6 +20,7 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.nio.file.Path;
+import java.util.List;
 
 @SuppressWarnings("MethodOverridesStaticMethodOfSuperclass")
 public final class Assertions extends org.assertj.core.api.Assertions {
@@ -37,4 +38,9 @@ public final class Assertions extends org.assertj.core.api.Assertions {
   public static StringAssertEx assertThat(@Nullable String actual) {
     return new StringAssertEx(actual);
   }
+
+  @NotNull
+  public static <ELEMENT> ListAssertEx<ELEMENT> assertThat(@Nullable List<? extends ELEMENT> actual) {
+    return new ListAssertEx<>(actual);
+  }
 }

platform/testFramework/extensions/src/com/intellij/testFramework/assertions/PathAssertEx.kt

@@ -15,7 +15,6 @@
  */
 package com.intellij.testFramework.assertions
 
-import com.intellij.rt.execution.junit.FileComparisonFailure
 import com.intellij.util.io.readText
 import com.intellij.util.io.size
 import org.assertj.core.api.AbstractCharSequenceAssert
@@ -67,9 +66,6 @@ class StringAssertEx(actual: String?) : AbstractCharSequenceAssert<StringAssertE
   fun isEqualTo(expected: Path) {
     isNotNull
 
-    val expectedContent = expected.readText()
-    if (actual != expectedContent) {
-      throw FileComparisonFailure(null, expectedContent, actual, expected.toString())
-    }
+    compareFileContent(actual, expected)
   }
 }

platform/testFramework/extensions/src/com/intellij/testFramework/assertions/snapshot.kt

@@ -0,0 +1,66 @@
+/*
+ * Copyright 2000-2016 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 com.intellij.testFramework.assertions
+
+import com.intellij.openapi.util.text.StringUtilRt
+import com.intellij.rt.execution.junit.FileComparisonFailure
+import com.intellij.util.io.readText
+import org.assertj.core.api.ListAssert
+import org.yaml.snakeyaml.DumperOptions
+import org.yaml.snakeyaml.Yaml
+import org.yaml.snakeyaml.nodes.Node
+import org.yaml.snakeyaml.nodes.Tag
+import org.yaml.snakeyaml.representer.Represent
+import org.yaml.snakeyaml.representer.Representer
+import java.io.StringWriter
+import java.nio.file.Path
+import java.util.regex.Pattern
+
+class ListAssertEx<ELEMENT>(actual: List<ELEMENT>) : ListAssert<ELEMENT>(actual) {
+  fun toMatchSnapshot(snapshotFile: Path) {
+    isNotNull
+
+    compareFileContent(actual, snapshotFile)
+  }
+}
+
+private fun dumpData(data: Any): String {
+  val dumperOptions = DumperOptions()
+  dumperOptions.isAllowReadOnlyProperties = true
+  dumperOptions.lineBreak = DumperOptions.LineBreak.UNIX
+  val yaml = Yaml(DumpRepresenter(), dumperOptions)
+  val writer = StringWriter()
+  yaml.dump(data, writer)
+  return writer.toString()
+}
+
+private class DumpRepresenter : Representer() {
+  init {
+    representers.put(Pattern::class.java, RepresentDump())
+  }
+
+  private inner class RepresentDump : Represent {
+    override fun representData(data: Any): Node = representScalar(Tag.STR, data.toString())
+  }
+}
+
+internal fun compareFileContent(actual: Any, snapshotFile: Path) {
+  val expectedContent = StringUtilRt.convertLineSeparators(snapshotFile.readText())
+  val actualContent = dumpData(actual)
+  if (actualContent != expectedContent) {
+    throw FileComparisonFailure(null, expectedContent, actualContent, snapshotFile.toString())
+  }
+}

platform/testFramework/extensions/testExtensions.iml

@@ -13,5 +13,6 @@
     <orderEntry type="library" exported="" scope="TEST" name="JDOM" level="project" />
     <orderEntry type="library" exported="" scope="TEST" name="assertJ" level="project" />
     <orderEntry type="library" scope="TEST" name="memoryfilesystem" level="project" />
+    <orderEntry type="library" scope="TEST" name="snakeyaml" level="project" />
   </component>
 </module>