Integrate Omnisharp in VSCode Testing API

package.json

@@ -93,7 +93,7 @@
     "@types/semver": "5.5.0",
     "@types/tmp": "0.0.33",
     "@types/unzipper": "^0.9.1",
-    "@types/vscode": "1.58.0",
+    "@types/vscode": "1.59.0",
     "@types/yauzl": "2.9.1",
     "archiver": "5.3.0",
     "chai": "4.3.4",

src/features/dotnetTest.ts

@@ -170,16 +170,15 @@ export default class TestManager extends AbstractProvider {
         return targetFrameworkVersion;
     }
 
-    public async discoverTests(fileName: string, testFrameworkName: string, noBuild: boolean): Promise<protocol.V2.TestInfo[]> {
-
-        let targetFrameworkVersion = await this._recordRunAndGetFrameworkVersion(fileName, testFrameworkName);
+    public async discoverTests(fileName: string, testFrameworkName: string, noBuild: boolean, targetFrameworkVersion: string = null): Promise<protocol.V2.TestInfo[]> {
         let runSettings = this._getRunSettings(fileName);
 
         const request: protocol.V2.DiscoverTestsRequest = {
             FileName: fileName,
             RunSettings: runSettings,
             TestFrameworkName: testFrameworkName,
-            TargetFrameworkVersion: targetFrameworkVersion,
+            TargetFrameworkVersion: targetFrameworkVersion ??
+                await this._recordRunAndGetFrameworkVersion(fileName, testFrameworkName),
             NoBuild: noBuild
         };
 
@@ -247,6 +246,7 @@ export default class TestManager extends AbstractProvider {
         try {
             let results = await this._runTestsInClass(fileName, runSettings, testFrameworkName, targetFrameworkVersion, methodsInClass, noBuild);
             this._eventStream.post(new ReportDotNetTestResults(results));
+            return results;
         }
         catch (reason) {
             this._eventStream.post(new DotNetTestRunFailure(reason));