Improve CatalogEntityRegistry types & add tests (#2495)

* improve CatalogEntityRegistry types & add tests

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

* fix

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

* fix

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

src/common/__tests__/catalog-entity-registry.test.ts

@@ -0,0 +1,63 @@
+import { observable, reaction } from "mobx";
+import { WebLink } from "../catalog-entities";
+import { CatalogEntityRegistry } from "../catalog-entity-registry";
+
+describe("CatalogEntityRegistry", () => {
+  let registry: CatalogEntityRegistry;
+  const entity = new WebLink({
+    apiVersion: "entity.k8slens.dev/v1alpha1",
+    kind: "WebLink",
+    metadata: {
+      uid: "test",
+      name: "test-link",
+      source: "test",
+      labels: {}
+    },
+    spec: {
+      url: "https://k8slens.dev"
+    },
+    status: {
+      phase: "ok"
+    }
+  });
+
+  beforeEach(() => {
+    registry = new CatalogEntityRegistry();
+  });
+
+  describe("addSource", () => {
+    it ("allows to add an observable source", () => {
+      const source = observable.array([]);
+
+      registry.addSource("test", source);
+      expect(registry.items.length).toEqual(0);
+
+      source.push(entity);
+
+      expect(registry.items.length).toEqual(1);
+    });
+
+    it ("added source change triggers reaction", (done) => {
+      const source = observable.array([]);
+
+      registry.addSource("test", source);
+      reaction(() => registry.items, () => {
+        done();
+      });
+
+      source.push(entity);
+    });
+  });
+
+  describe("removeSource", () => {
+    it ("removes source", () => {
+      const source = observable.array([]);
+
+      registry.addSource("test", source);
+      source.push(entity);
+      registry.removeSource("test");
+
+      expect(registry.items.length).toEqual(0);
+    });
+  });
+});