diff --git a/plugins/performanceTesting/commands-model/src/com/intellij/tools/ide/performanceTesting/commands/generalCommandChain.kt b/plugins/performanceTesting/commands-model/src/com/intellij/tools/ide/performanceTesting/commands/generalCommandChain.kt
index 5a65f9b75bc4..2dc6e8704227 100644
--- a/plugins/performanceTesting/commands-model/src/com/intellij/tools/ide/performanceTesting/commands/generalCommandChain.kt
+++ b/plugins/performanceTesting/commands-model/src/com/intellij/tools/ide/performanceTesting/commands/generalCommandChain.kt
@@ -48,6 +48,11 @@ private fun <T : CommandChain> T.appendRawLine(line: String): T = apply {
   addCommand(line)
 }
 
+fun <T : CommandChain> T.verifyFileEncoding(relativePath: String,
+                                            expectedCharsetName: String): T = apply {
+  addCommand("${CMD_PREFIX}assertEncodingFileCommand", relativePath, expectedCharsetName)
+}
+
 fun <T : CommandChain> T.openFile(relativePath: String,
                                   timeoutInSeconds: Long = 0,
                                   suppressErrors: Boolean = false,
@@ -740,7 +745,8 @@ fun <T : CommandChain> T.stopNameSuggestionBenchmark(reportPath: String): T = ap
 }
 
 fun <T : CommandChain> T.registerCompletionMockResponse(code: String, language: String): T = apply {
-  addCommand("${CMD_PREFIX}registerCompletionMockResponse -code ${code.replace(System.lineSeparator(), "<newLine>")} | -language ${language}")
+  addCommand(
+    "${CMD_PREFIX}registerCompletionMockResponse -code ${code.replace(System.lineSeparator(), "<newLine>")} | -language ${language}")
 }
 
 fun <T : CommandChain> T.waitInlineCompletion(): T = apply {
diff --git a/plugins/performanceTesting/src/com/jetbrains/performancePlugin/BaseCommandProvider.java b/plugins/performanceTesting/src/com/jetbrains/performancePlugin/BaseCommandProvider.java
index 49a49dbca17d..2d45f9447bca 100644
--- a/plugins/performanceTesting/src/com/jetbrains/performancePlugin/BaseCommandProvider.java
+++ b/plugins/performanceTesting/src/com/jetbrains/performancePlugin/BaseCommandProvider.java
@@ -98,7 +98,8 @@ public final class BaseCommandProvider implements CommandProvider {
       Map.entry(MoveCaretCommand.PREFIX, MoveCaretCommand::new),
       Map.entry(TakeThreadDumpCommand.PREFIX, TakeThreadDumpCommand::new),
       Map.entry(CaptureMemoryMetricsCommand.PREFIX, CaptureMemoryMetricsCommand::new),
-      Map.entry(SleepCommand.PREFIX, SleepCommand::new)
+      Map.entry(SleepCommand.PREFIX, SleepCommand::new),
+      Map.entry(AssertEncodingFileCommand.PREFIX, AssertEncodingFileCommand::new)
     );
   }
 }
diff --git a/plugins/performanceTesting/src/com/jetbrains/performancePlugin/commands/AssertEncodingFileCommand.kt b/plugins/performanceTesting/src/com/jetbrains/performancePlugin/commands/AssertEncodingFileCommand.kt
new file mode 100644
index 000000000000..18697b46c509
--- /dev/null
+++ b/plugins/performanceTesting/src/com/jetbrains/performancePlugin/commands/AssertEncodingFileCommand.kt
@@ -0,0 +1,32 @@
+package com.jetbrains.performancePlugin.commands
+
+import com.intellij.openapi.ui.playback.PlaybackContext
+import com.intellij.openapi.ui.playback.commands.PlaybackCommandCoroutineAdapter
+import com.intellij.openapi.vfs.encoding.EncodingProjectManager
+import org.jetbrains.annotations.NonNls
+import java.nio.charset.Charset
+
+/**
+ * Command checks file encoding.
+ * Example: %assertEncodingFileCommand filePath expectedCharsetName - verify that filePath encoded in expectedCharsetName format
+ */
+class AssertEncodingFileCommand(text: String, line: Int) : PlaybackCommandCoroutineAdapter(text, line) {
+  companion object {
+    const val PREFIX: @NonNls String = CMD_PREFIX + "assertEncodingFileCommand"
+  }
+
+  override suspend fun doExecute(context: PlaybackContext) {
+    val project = context.project
+    val commandArgs = extractCommandArgument(PREFIX).split(" ")
+    val filePath = commandArgs[0]
+    val file = OpenFileCommand.findFile(filePath, project)
+    if (file == null) {
+      throw IllegalArgumentException("File not found: $filePath")
+    }
+    val expectedCharset = Charset.forName(commandArgs[1])
+    val actualCharset = EncodingProjectManager.getInstance(project).getEncoding(file, true)
+    if (!expectedCharset.equals(actualCharset)) {
+      throw AssertionError("Expected $expectedCharset charset, but got $actualCharset")
+    }
+  }
+}
\ No newline at end of file