Alanren/integration test (#3657)

* add an extension for integration tests

* setup ads before running test

* test setup

* test cases

* bash script

* shorter temp folder name

* code cleanup

* add commented out original code

* fix test error

* test result path

* rename results file

* change file path

* report smoke test results

* test stablize

* test stablization and configurable test servers

* fix smoke test error

* connection provider

* simplify the integration test script

* add comment

* fix tslint error

* address PR comments

* add temp log to check whether the environment variable is already set

* remove temp log

* move api definition to testapi typing file

* exclude integration tests extension

* address comments

scripts/sql-test-integration.bat

@@ -0,0 +1,20 @@
+setlocal
+
+pushd %~dp0\..
+
+set VSCODEUSERDATADIR=%TMP%\adsuser-%RANDOM%-%TIME:~6,5%
+set VSCODEEXTENSIONSDIR=%TMP%\adsext-%RANDOM%-%TIME:~6,5%
+echo %VSCODEUSERDATADIR%
+echo %VSCODEEXTENSIONSDIR%
+@echo OFF
+
+call .\scripts\code.bat --extensionDevelopmentPath=%~dp0\..\extensions\integration-tests --extensionTestsPath=%~dp0\..\extensions\integration-tests\out --user-data-dir=%VSCODEUSERDATADIR% --extensions-dir=%VSCODEEXTENSIONSDIR%
+
+if %errorlevel% neq 0 exit /b %errorlevel%
+
+rmdir /s /q %VSCODEUSERDATADIR%
+rmdir /s /q %VSCODEEXTENSIONSDIR%
+
+popd
+
+endlocal