fix(amplify-xcode): Fixing errors during amplify pull (#3536)

* fix(amplify-xcode): Fixing quick start project errors

* updating errors names

Author: harsh62

AmplifyTools/AmplifyXcode/Sources/AmplifyXcodeCore/Commands/CommandImportModels.swift

@@ -13,11 +13,18 @@ enum CommandImportModelsTasks {
                                           args: CommandImportModels.TaskArgs) -> AmplifyCommandTaskResult {
         let modelsPath = environment.path(for: args.generatedModelsPath)
         guard environment.directoryExists(atPath: modelsPath) else {
-            return .failure(
-                AmplifyCommandError(
-                    .folderNotFound,
-                    errorDescription: "Amplify generated models not found at \(modelsPath)",
-                    recoverySuggestion: "Run amplify codegen models."))
+            do {
+                _ = try environment.createDirectory(atPath: args.generatedModelsPath)
+            } 
+            catch {
+                return .failure(
+                    AmplifyCommandError(
+                        .folderNotFound,
+                        errorDescription: "Unable to create a new folder for models at path: \(modelsPath)",
+                        recoverySuggestion: "Run amplify codegen models."))
+            }
+
+            return .success("Amplify models folder created at \(modelsPath)")
         }
 
         return .success("Amplify models folder found at \(modelsPath)")

AmplifyTools/AmplifyXcode/Sources/AmplifyXcodeCore/Environment/CommandEnvironment.swift

@@ -89,6 +89,8 @@ extension CommandEnvironment {
         if xcodeProjFiles.count != 1 {
             throw AmplifyCommandError(
                 .xcodeProject,
+                errorDescription: "Unable to find an Xcode project (i.e. `xcodeproj` file) in directory: \(path)",
+                recoverySuggestion: "Please create a new Xcode project or import one at \(path).",
                 error: XcodeProjectError.notFound(path: path))
         }
         let projectName = xcodeProjFiles[0]

AmplifyTools/AmplifyXcode/Tests/AmplifyXcodeCoreTests/Commands/CommandImportModelsTasksTests.swift

@@ -61,12 +61,19 @@ class CommandImportModelsTasksTests: XCTestCase {
                 _ = super.directoryExists(atPath: dirPath)
                 return false
             }
+
+            override func createDirectory(atPath path: String) throws -> String {
+                _ = try super.createDirectory(atPath: path)
+                return "created"
+            }
         }
         let environment = FailingEnvironment(basePath: basePath, fileManager: fileManager)
         let result = CommandImportModelsTasks.projectHasGeneratedModels(environment: environment, args: taskArgs)
-        if case .success = result {
+        guard case .success(let message) = result else {
             XCTFail("projectHasGeneratedModels should not have succeeded")
+            return
         }
+        XCTAssertTrue(message.hasPrefix("Amplify models folder created at"))
     }
 
 }