Additional tests for the import wizard (#11273)

* Setting up tests on import extension

* -Added API wrappers for all the azdata and vscode APIs to make them easily mockable
-Added some unit tests for the import extension
-Some code logic separations

* -added code report for the import extension in ci

* Did some more code refractoring

* -Added json report generation

* updated vscodetestcoverage to latest version in import extension.

* -remove duplicate codecoverageConfig.json

* -Added some modifyColumnPage tests

* pushing temp changes

* -Added some more testcases

* -Added tests using available vscode and azdata apis

* some minor comment change

* removed unnecessary test

* added accidently removed test

* Added some comments

* fixed some broken tests and added comments in fileConfigPage

* code clean up and some more comments

* fixed the prosePreviewPage test and the download test

* added getter and setters

* Increasing timeout and fixing a comment

* removed unnecessary comments and some other code cleanup

* Deleting dotnet files before redownloading them

* - made changes in the PR
- Moved extensioncode to utils.test for better reusability

* added some 'should' messages

extensions/import/src/test/utils.test.ts

@@ -6,6 +6,8 @@
 import * as azdata from 'azdata';
 import * as vscode from 'vscode';
 import { ImportDataModel, ColumnMetadata } from '../wizard/api/models';
+import { FlatFileProvider, PROSEDiscoveryParams, InsertDataParams, GetColumnInfoParams, ChangeColumnSettingsParams, PROSEDiscoveryResponse, InsertDataResponse, ChangeColumnSettingsResponse, GetColumnInfoResponse } from '../services/contracts';
+import * as fs from 'fs';
 
 export class ImportTestUtils {
 
@@ -34,6 +36,22 @@ export class ImportTestUtils {
 			options: {}
 		} as azdata.connection.ConnectionProfile;
 	}
+
+	public static async checkPathExists(path: string): Promise<boolean> {
+		return fs.promises.access(path, fs.constants.F_OK)
+			.then(() => true)
+			.catch(() => false);
+	}
+
+	public static async getExtensionPath(): Promise<string> {
+		return await vscode.extensions.getExtension('Microsoft.import').extensionPath;
+	}
+
+	public static async getTestExtensionContext(): Promise<TestExtensionContext> {
+		let testContext = new TestExtensionContext();
+		testContext.extensionPath = await vscode.extensions.getExtension('Microsoft.import').extensionPath;
+		return testContext;
+	}
 }
 
 export class TestQueryProvider implements azdata.QueryProvider {
@@ -211,3 +229,20 @@ export class TestImportDataModel implements ImportDataModel {
 	filePath: string;
 	fileType: string;
 }
+
+export class TestFlatFileProvider implements FlatFileProvider {
+	providerId?: string;
+	sendPROSEDiscoveryRequest(params: PROSEDiscoveryParams): Thenable<PROSEDiscoveryResponse> {
+		throw new Error('Method not implemented.');
+	}
+	sendInsertDataRequest(params: InsertDataParams): Thenable<InsertDataResponse> {
+		throw new Error('Method not implemented.');
+	}
+	sendGetColumnInfoRequest(params: GetColumnInfoParams): Thenable<GetColumnInfoResponse> {
+		throw new Error('Method not implemented.');
+	}
+	sendChangeColumnSettingsRequest(params: ChangeColumnSettingsParams): Thenable<ChangeColumnSettingsResponse> {
+		throw new Error('Method not implemented.');
+	}
+
+}