Fixes microsoft#303 Dont run test if current file is not test file

README.md

@@ -59,6 +59,7 @@ The following Visual Studio Code settings are available for the Go extension.  T
 	"go.formatFlags": [],
 	"go.goroot": "/usr/local/go",
 	"go.gopath": "/Users/lukeh/go",
+	"go.toolsGopath": "/Users/lukeh/gotools",
 	"go.gocodeAutoBuild": false
 }
 ```
@@ -209,7 +210,7 @@ The extension uses the following tools, installed in the current GOPATH.  If any
 - guru: `go get -u -v golang.org/x/tools/cmd/guru`
 - gotests: `go get -u -v github.com/cweill/gotests/...`
 
-If you wish to have the extension use a separate GOPATH for its tools, set the VSCODE_GOTOOLS environment variable to the desired path.
+If you wish to have the extension use a separate GOPATH for its tools, set `go.toolsGopath` to the desired path in the Visual Studio Code settings.
 
 To install the tools manually in the current GOPATH, just paste and run:
 ```bash

src/goTest.ts

@@ -51,6 +51,10 @@ export function testAtCursor(goConfig: vscode.WorkspaceConfiguration) {
 		vscode.window.showInformationMessage('No editor is active.');
 		return;
 	}
+	if (!editor.document.fileName.endsWith('_test.go')) {
+		vscode.window.showInformationMessage('No tests found. Current file is not a test file.');
+		return;
+	}
 	getTestFunctions(editor.document).then(testFunctions => {
 		let testFunction: vscode.SymbolInformation;
 		// Find any test function containing the cursor.
@@ -105,6 +109,10 @@ export function testCurrentFile(goConfig: vscode.WorkspaceConfiguration): Thenab
 		vscode.window.showInformationMessage('No editor is active.');
 		return;
 	}
+	if (!editor.document.fileName.endsWith('_test.go')) {
+		vscode.window.showInformationMessage('No tests found. Current file is not a test file.');
+		return;
+	}
 	return getTestFunctions(editor.document).then(testFunctions => {
 		return goTest({
 			goConfig: goConfig,