upd

Author: tiamatou

src/SUMMARY.md

@@ -4,4 +4,5 @@
 - [Manifest format](./manifest.md)
 - [Build script](./build-script.md)
 - [Environment variables](./environment-variables.md)
-- [Icons and logotypes](./icon-logo.md)
+- [Icons and logotypes](./icon-logo.md)
+- [Unit testing](./unit-testing.md)

src/environment-variables.md

@@ -8,7 +8,7 @@
 
 These environment variables are available for use with `import.meta.env` expressions within ZoneGFX packages, their build scripts and unit-testing scripts.
 
-```ts
+```es
 import.meta.env.ZONE_MANIFEST_DIR
 ```
 
@@ -31,6 +31,6 @@ FOO=bar
 
 You can then refer to that in EScript with expressions like:
 
-```ts
+```es
 import.meta.env.FOO
 ```

src/unit-testing.md

@@ -0,0 +1,14 @@
+# Unit testing
+
+Use the `zone.testing` module to formulate tests under your [unit-testing source path][manifest].
+
+```es
+import { Test } from "zone.testing";
+
+//
+Test("sum", () => {
+    assert.equal(1 + 1, 2);
+});
+```
+
+[manifest]: ./manifest.md#test-section