Add getChildren tests

Author: norascheuch

extensions/ql-vscode/test/vscode-tests/no-workspace/data-extensions-editor/model-details/model-details-data-provider.test.ts

@@ -1,6 +1,12 @@
 import { CodeQLCliServer } from "../../../../../src/codeql-cli/cli";
-import { ExternalApiUsage } from "../../../../../src/data-extensions-editor/external-api-usage";
-import { ModelDetailsDataProvider } from "../../../../../src/data-extensions-editor/model-details/model-details-data-provider";
+import {
+  ExternalApiUsage,
+  Usage,
+} from "../../../../../src/data-extensions-editor/external-api-usage";
+import {
+  ModelDetailsDataProvider,
+  ModelDetailsTreeViewItem,
+} from "../../../../../src/data-extensions-editor/model-details/model-details-data-provider";
 import { DatabaseItem } from "../../../../../src/databases/local-databases";
 import { mockedObject } from "../../../utils/mocking.helpers";
 
@@ -89,4 +95,40 @@ describe("ModelDetailsDataProvider", () => {
       expect(onDidChangeTreeDataListener).toHaveBeenCalledTimes(1);
     });
   });
+
+  describe("getChildren", () => {
+    const externalApiUsages: ExternalApiUsage[] = [
+      mockedObject<ExternalApiUsage>({ supported: true }),
+      mockedObject<ExternalApiUsage>({ supported: false }),
+    ];
+    const dbItem = mockedObject<DatabaseItem>({
+      getSourceLocationPrefix: () => "test",
+    });
+
+    it("should return [] if item is a usage", async () => {
+      const item = { usages: undefined } as unknown as ModelDetailsTreeViewItem;
+      expect(dataProvider.getChildren(item)).toEqual([]);
+    });
+
+    it("should return usages if item is external api usage", async () => {
+      const usage = mockedObject<Usage>({});
+      const item = mockedObject<ExternalApiUsage>({
+        usages: [usage],
+      });
+
+      expect(dataProvider.getChildren(item)).toEqual([usage]);
+    });
+
+    it("should show all externalApiUsages if hideModeledApis is false and item is undefined", async () => {
+      const hideModeledApis: boolean = false;
+      await dataProvider.setState(externalApiUsages, dbItem, hideModeledApis);
+      expect(dataProvider.getChildren().length).toEqual(2);
+    });
+
+    it("should filter externalApiUsages if hideModeledApis is true and item is undefined", async () => {
+      const hideModeledApis: boolean = true;
+      await dataProvider.setState(externalApiUsages, dbItem, hideModeledApis);
+      expect(dataProvider.getChildren().length).toEqual(1);
+    });
+  });
 });