1 files changed, 49 insertions, 0 deletions

diff --git a/editors/code/src/test/utils/index.ts b/editors/code/src/test/utils/index.ts
new file mode 100644
index 000000000..16715a286
--- /dev/null
+++ b/editors/code/src/test/utils/index.ts
@@ -0,0 +1,49 @@
+//
+// PLEASE DO NOT MODIFY / DELETE UNLESS YOU KNOW WHAT YOU ARE DOING
+//
+// This file is providing the test runner to use when running extension tests.
+// By default the test runner in use is Mocha based.
+//
+// You can provide your own test runner if you want to override it by exporting
+// a function run(testRoot: string, clb: (error:Error) => void) that the extension
+// host can call to run the tests. The test runner is expected to use console.log
+// to report the results back to the caller. When the tests are finished, return
+// a possible error to the callback or null if none.
+
+import * as glob from 'glob';
+import * as Mocha from 'mocha';
+import * as path from 'path';
+
+export function run(): Promise<void> {
+    // Create the mocha test
+    const mocha = new Mocha({
+        ui: 'bdd'
+    });
+    mocha.useColors(true);
+
+    const testsRoot = __dirname;
+
+    return new Promise((c, e) => {
+        glob('**/**.test.js', { cwd: testsRoot }, (err, files) => {
+            if (err) {
+                return e(err);
+            }
+
+            // Add files to the test suite
+            files.forEach(f => mocha.addFile(path.resolve(testsRoot, f)));
+
+            try {
+                // Run the mocha test
+                mocha.run(failures => {
+                    if (failures > 0) {
+                        e(new Error(`${failures} tests failed.`));
+                    } else {
+                        c();
+                    }
+                });
+            } catch (err) {
+                e(err);
+            }
+        });
+    });
+}