Add QueryTreeDataProvider tests

Author: robertbrignull

extensions/ql-vscode/test/vscode-tests/minimal-workspace/queries-panel/query-tree-data-provider.test.ts

@@ -0,0 +1,93 @@
+import { EventEmitter } from "vscode";
+import {
+  FileTreeDirectory,
+  FileTreeLeaf,
+} from "../../../../src/common/file-tree-nodes";
+import {
+  QueryDiscoverer,
+  QueryTreeDataProvider,
+} from "../../../../src/queries-panel/query-tree-data-provider";
+
+describe("QueryTreeDataProvider", () => {
+  describe("getChildren", () => {
+    it("returns no children when queries is undefined", async () => {
+      const dataProvider = new QueryTreeDataProvider({
+        queries: undefined,
+        onDidChangeQueries: jest.fn(),
+      });
+
+      expect(dataProvider.getChildren()).toEqual([]);
+    });
+
+    it("returns no children when there are no queries", async () => {
+      const dataProvider = new QueryTreeDataProvider({
+        queries: [],
+        onDidChangeQueries: jest.fn(),
+      });
+
+      expect(dataProvider.getChildren()).toEqual([]);
+    });
+
+    it("converts FileTreeNode to QueryTreeViewItem", async () => {
+      const dataProvider = new QueryTreeDataProvider({
+        queries: [
+          new FileTreeDirectory("dir1", "dir1", [
+            new FileTreeDirectory("dir1/dir2", "dir2", [
+              new FileTreeLeaf("dir1/dir2/file1", "file1"),
+              new FileTreeLeaf("dir1/dir2/file1", "file2"),
+            ]),
+          ]),
+          new FileTreeDirectory("dir3", "dir3", [
+            new FileTreeLeaf("dir3/file3", "file3"),
+          ]),
+        ],
+        onDidChangeQueries: jest.fn(),
+      });
+
+      expect(dataProvider.getChildren().length).toEqual(2);
+
+      expect(dataProvider.getChildren()[0].label).toEqual("dir1");
+      expect(dataProvider.getChildren()[0].children.length).toEqual(1);
+      expect(dataProvider.getChildren()[0].children[0].label).toEqual("dir2");
+      expect(dataProvider.getChildren()[0].children[0].children.length).toEqual(
+        2,
+      );
+      expect(
+        dataProvider.getChildren()[0].children[0].children[0].label,
+      ).toEqual("file1");
+      expect(
+        dataProvider.getChildren()[0].children[0].children[1].label,
+      ).toEqual("file2");
+
+      expect(dataProvider.getChildren()[1].label).toEqual("dir3");
+      expect(dataProvider.getChildren()[1].children.length).toEqual(1);
+      expect(dataProvider.getChildren()[1].children[0].label).toEqual("file3");
+    });
+  });
+
+  describe("onDidChangeQueries", () => {
+    it("should update tree when the queries change", async () => {
+      const onDidChangeQueriesEmitter = new EventEmitter<void>();
+      const queryDiscoverer: QueryDiscoverer = {
+        queries: [
+          new FileTreeDirectory("dir1", "dir1", [
+            new FileTreeLeaf("dir1/file1", "file1"),
+          ]),
+        ],
+        onDidChangeQueries: onDidChangeQueriesEmitter.event,
+      };
+
+      const dataProvider = new QueryTreeDataProvider(queryDiscoverer);
+      expect(dataProvider.getChildren().length).toEqual(1);
+
+      queryDiscoverer.queries?.push(
+        new FileTreeDirectory("dir2", "dir2", [
+          new FileTreeLeaf("dir2/file2", "file2"),
+        ]),
+      );
+      onDidChangeQueriesEmitter.fire();
+
+      expect(dataProvider.getChildren().length).toEqual(2);
+    });
+  });
+});