VSCode variables support for substitutions

Tests now open Rust-Analyzer extension code in order to populate
VSCode variables.

2 files changed, 9 insertions, 1 deletions

diff --git a/editors/code/tests/runTests.ts b/editors/code/tests/runTests.ts
index 7a8f3ef698b..6172cc7d5f9 100644
--- a/editors/code/tests/runTests.ts
+++ b/editors/code/tests/runTests.ts
@@ -14,7 +14,7 @@ async function main() {
     let minimalVersion: string = json.engines.vscode;
     if (minimalVersion.startsWith('^')) minimalVersion = minimalVersion.slice(1);
 
-    const launchArgs = ["--disable-extensions"];
+    const launchArgs = ["--disable-extensions", extensionDevelopmentPath];
 
     // All test suites (either unit tests or integration tests) should be in subfolders.
     const extensionTestsPath = path.resolve(__dirname, './unit/index');
diff --git a/editors/code/tests/unit/settings.test.ts b/editors/code/tests/unit/settings.test.ts
index f4b022b421c..dca4e38d138 100644
--- a/editors/code/tests/unit/settings.test.ts
+++ b/editors/code/tests/unit/settings.test.ts
@@ -49,5 +49,13 @@ export async function getTests(ctx: Context) {
             const actualEnv = await substituteVariablesInEnv(envJson);
             assert.deepStrictEqual(actualEnv, expectedEnv);
         });
+
+        suite.addTest('should support VSCode variables', async () => {
+            const envJson = {
+                USING_VSCODE_VAR: "${workspaceFolderBasename}"
+            };
+            const actualEnv = await substituteVariablesInEnv(envJson);
+            assert.deepStrictEqual(actualEnv.USING_VSCODE_VAR, 'code');
+        });
     });
 }