testController: Use a per-project terminal to run tests

To run tests from tox.ini files from different projects, create (and
re-use) separate terminals. Terminal identifier uses label and
description of root test item (the tox.ini).

Author: s-hemer

src/testController.ts

@@ -2,6 +2,7 @@ import * as vscode from 'vscode';
 import * as path from 'path';
 import * as util from 'util';
 import { runTox, getToxEnvs } from './run';
+import { getTerminal, getRootParentLabelDesc } from './utils';
 
 export function create() {
 	const controller = vscode.tests.createTestController('toxTestController', 'Tox Testing');
@@ -38,7 +39,7 @@ export function create() {
 			const start = Date.now();
 			try {
 				const cwd = vscode.workspace.getWorkspaceFolder(test.uri!)!.uri.path;
-				runTox([test.label], cwd);
+				runTox([test.label], "", getTerminal(cwd, getRootParentLabelDesc(test)));
 				run.passed(test, Date.now() - start);
 			}
 			catch (e: any) {

src/utils.ts

@@ -34,3 +34,18 @@ export function getTerminal(projDir : string = findProjectDir(), name : string =
 	}
 	return vscode.window.createTerminal({"cwd": projDir, "name": name});
 }
+
+/**
+ * Get the top-most parent label (+ description) for terminal name
+ * @param test The test to start from.
+ * @returns The label and description of the root test item.
+ */
+export function getRootParentLabelDesc(test: vscode.TestItem) : string {
+	let root = test;
+
+	while (root.parent !== undefined){
+		root = root.parent;
+	}
+
+	return root.label + " " + root.description; // FIXME: return as tuple?
+}