more progress on integration test

they still don't pass but they are getting closer

src/integrationTest/kotlin/com/sourcegraph/cody/DocumentSynchronizationTest.kt

@@ -1,10 +1,12 @@
 package com.sourcegraph.cody
 
 import com.intellij.openapi.command.WriteCommandAction
+import com.intellij.openapi.vfs.VirtualFile
 import com.sourcegraph.cody.agent.CodyAgentService
 import com.sourcegraph.cody.agent.protocol.GetDocumentsParams
 import com.sourcegraph.cody.util.CodyIntegrationTestFixture
 import org.junit.Test
+import java.util.concurrent.CompletableFuture
 
 class DocumentSynchronizationTest : CodyIntegrationTestFixture() {
 
@@ -16,59 +18,68 @@ class DocumentSynchronizationTest : CodyIntegrationTestFixture() {
               console.log(\"hello there@\")
             }
         """
-            .trimIndent()
-            .removePrefix("\n")
+        .trimIndent()
+        .removePrefix("\n")
 
     val expectedContent =
-        """
+      """
             class Foo {
               console.log(\"hello there!\")
             }
         """
-            .trimIndent()
-            .removePrefix("\n")
+        .trimIndent()
+        .removePrefix("\n")
 
     val tempFile = myFixture.createFile("tempFile.java", beforeContent)
-    val myUri = tempFile.url
-    myFixture.configureByText("tempFile.java", beforeContent)
-
-    insertBeforeText(beforeContent)
+    configureFixtureWithFile(tempFile)
+    setCaretAndSelection()
 
-    val document = myFixture.editor.document
-    // Write our initial content to the Editor
-    WriteCommandAction.runWriteCommandAction(project) { document.setText(beforeContent) }
+    val editor = myFixture.editor // Will not be set until we configure the fixture above.
+    val document = editor.document
 
-    // Perform our editing action.
     WriteCommandAction.runWriteCommandAction(project) {
-      val offset = document.text.indexOf('@')
-      document.replaceString(offset, offset + 1, "!")
+      // This is the test-specific editing operation to test.
+      // TODO: Move everything else here except before/after text, into the test fixture.
+      document.insertString(editor.caretModel.offset, "!")
     }
 
-    // Ensure that the Editor's after-text matches expected
+    // Make sure our own copy of the document was edited properly.
     assertEquals(expectedContent, document.text)
 
+    checkAgentResults(tempFile, expectedContent)
+  }
+
+  private fun checkAgentResults(tempFile: VirtualFile, expectedContent: String) {
+    // Verify that Agent has the correct content, caret, and optionally, selection.
+    val future = CompletableFuture<Void>()
     CodyAgentService.withAgent(project) { agent ->
-      agent.server.awaitPendingPromises() // Wait for Agent to complete its computations.
+      agent.server.awaitPendingPromises()
 
       val result =
-          agent.server.testingRequestWorkspaceDocuments(GetDocumentsParams(uris = listOf(myUri)))
+          agent.server.testingRequestWorkspaceDocuments(
+              GetDocumentsParams(uris = listOf(tempFile.url)))
 
       result.thenAccept { response ->
         // There should be one document in the response.
         assertEquals(1, response.documents.size)
         // It should have our URI.
         val agentDocument = response.documents[0]
-        assertEquals(myUri, agentDocument.uri)
+        assertEquals(tempFile.url, agentDocument.uri)
 
         // It should have the same content as the Editor's after-text.
         assertEquals(expectedContent, agentDocument.content)
+        future.complete(null)
+      }.exceptionally { ex ->
+        future.completeExceptionally(ex)
+        null
       }
     }
+    future.get() // Wait for the CompletableFuture to complete
   }
 
-  private fun insertBeforeText(content: String) {
+  private fun setCaretAndSelection() {
     WriteCommandAction.runWriteCommandAction(project) {
-      var text = content
+      var text = myFixture.editor.document.text
       var caretOffset = -1
       var selectionStart = -1
       var selectionEnd = -1

src/integrationTest/kotlin/com/sourcegraph/cody/util/CodyIntegrationTestFixture.kt

@@ -10,6 +10,7 @@ import com.intellij.openapi.editor.ex.EditorEx
 import com.intellij.openapi.fileEditor.FileDocumentManager
 import com.intellij.openapi.project.DumbService
 import com.intellij.openapi.project.Project
+import com.intellij.openapi.vfs.VirtualFile
 import com.intellij.testFramework.EditorTestUtil
 import com.intellij.testFramework.PlatformTestUtil
 import com.intellij.testFramework.fixtures.BasePlatformTestCase
@@ -22,13 +23,13 @@ import com.sourcegraph.cody.edit.CodyInlineEditActionNotifier
 import com.sourcegraph.cody.edit.FixupService
 import com.sourcegraph.cody.edit.sessions.FixupSession
 import com.sourcegraph.config.ConfigUtil
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
 import java.io.File
 import java.nio.file.Paths
 import java.util.concurrent.CompletableFuture
 import java.util.concurrent.TimeUnit
 import java.util.regex.Pattern
-import org.junit.runner.RunWith
-import org.junit.runners.JUnit4
 
 @RunWith(JUnit4::class)
 abstract class CodyIntegrationTestFixture : BasePlatformTestCase() {
@@ -91,6 +92,16 @@ abstract class CodyIntegrationTestFixture : BasePlatformTestCase() {
     initCaretPosition()
   }
 
+  protected fun configureFixtureWithFile(testFile: VirtualFile) {
+    val policy = System.getProperty("idea.test.execution.policy")
+    assertTrue(policy == "com.sourcegraph.cody.test.NonEdtIdeaTestExecutionPolicy")
+
+    myFixture.configureFromExistingVirtualFile(testFile)
+
+    initCredentialsAndAgent()
+    initCaretPosition()
+  }
+
   override fun getTestDataPath(): String {
     if (project == null) {
       return super.getTestDataPath()

src/main/kotlin/com/sourcegraph/cody/agent/CodyAgent.kt

@@ -12,13 +12,13 @@ import com.intellij.util.system.CpuArch
 import com.sourcegraph.cody.agent.protocol.*
 import com.sourcegraph.cody.vscode.CancellationToken
 import com.sourcegraph.config.ConfigUtil
+import org.eclipse.lsp4j.jsonrpc.Launcher
 import java.io.*
 import java.net.Socket
 import java.net.URI
 import java.nio.file.*
 import java.util.*
 import java.util.concurrent.*
-import org.eclipse.lsp4j.jsonrpc.Launcher
 
 /**
  * Orchestrator for the Cody agent, which is a Node.js program that implements the prompt logic for
@@ -192,7 +192,7 @@ private constructor(
 
       logger.info("starting Cody agent ${command.joinToString(" ")}")
       logger.info(
-          "Cody agent proxyUrl ${proxyUrl} PROXY_TYPE_IS_SOCKS ${proxy.PROXY_TYPE_IS_SOCKS}")
+          "Cody agent proxyUrl $proxyUrl PROXY_TYPE_IS_SOCKS ${proxy.PROXY_TYPE_IS_SOCKS}")
 
       val process =
           processBuilder