Add some integration tests for the db panel

extensions/ql-vscode/src/vscode-tests/minimal-workspace/databases/README.md

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+### Databases
+
+This folder contains tests  for the new experimental databases panel and new query run experience.

extensions/ql-vscode/src/vscode-tests/minimal-workspace/databases/db-panel.test.ts

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+import * as vscode from 'vscode';
+import { expect } from 'chai';
+import * as path from 'path';
+import * as fs from 'fs-extra';
+import * as pq from 'proxyquire';
+import { DbConfig } from '../../../databases/db-config';
+import { DbManager } from '../../../databases/db-manager';
+import { DbConfigStore } from '../../../databases/db-config-store';
+import { DbTreeDataProvider } from '../../../databases/ui/db-tree-data-provider';
+import { DbPanel } from '../../../databases/ui/db-panel';
+import { DbItemKind } from '../../../databases/db-item';
+import { DbTreeViewItem } from '../../../databases/ui/db-tree-view-item';
+
+const proxyquire = pq.noPreserveCache();
+
+describe('db panel', async () => {
+  const workspaceStoragePath = path.join(__dirname, 'test-workspace');
+  const extensionPath = path.join(__dirname, '../../../../');
+  const dbConfigFilePath = path.join(workspaceStoragePath, 'workspace-databases.json');
+  let dbTreeDataProvider: DbTreeDataProvider;
+  let dbManager: DbManager;
+  let dbConfigStore: DbConfigStore;
+  let dbPanel: DbPanel;
+
+  before(async () => {
+    dbConfigStore = new DbConfigStore(workspaceStoragePath, extensionPath);
+    dbManager = new DbManager(dbConfigStore);
+
+    // Create a modified version of the DbPanel module that allows
+    // us to override the creation of the DbTreeDataProvider
+    const mod = proxyquire('../../../databases/ui/db-panel', {
+      './db-tree-data-provider': {
+        DbTreeDataProvider: class {
+          constructor() {
+            return dbTreeDataProvider;
+          }
+        }
+      }
+    });
+
+    // Initialize the panel using the modified module
+    dbPanel = new mod.DbPanel(dbManager) as DbPanel;
+    await dbPanel.initialize();
+  });
+
+  beforeEach(async () => {
+    await fs.ensureDir(workspaceStoragePath);
+  });
+
+  afterEach(async () => {
+    await fs.remove(workspaceStoragePath);
+  });
+
+  it('should render default local and remote nodes when the config is empty', async () => {
+    const dbConfig: DbConfig = {
+      remote: {
+        repositoryLists: [],
+        owners: [],
+        repositories: []
+      },
+    };
+
+    await saveDbConfig(dbConfig);
+
+    const dbTreeItems = await dbTreeDataProvider.getChildren();
+
+    expect(dbTreeItems).to.be.ok;
+    const items = dbTreeItems!;
+    expect(items.length).to.equal(2);
+
+    const remoteRootNode = items[0];
+    expect(remoteRootNode.dbItem).to.be.ok;
+    expect(remoteRootNode.dbItem?.kind).to.equal(DbItemKind.RootRemote);
+    expect(remoteRootNode.label).to.equal('remote');
+    expect(remoteRootNode.tooltip).to.equal('Remote databases');
+    expect(remoteRootNode.collapsibleState).to.equal(vscode.TreeItemCollapsibleState.Collapsed);
+    expect(remoteRootNode.children).to.be.ok;
+    expect(remoteRootNode.children.length).to.equal(3);
+
+    const systemDefinedListItems = remoteRootNode.children.filter(item => item.dbItem?.kind === DbItemKind.RemoteSystemDefinedList);
+    expect(systemDefinedListItems.length).to.equal(3);
+    checkRemoteSystemDefinedListItem(systemDefinedListItems[0], 10);
+    checkRemoteSystemDefinedListItem(systemDefinedListItems[1], 100);
+    checkRemoteSystemDefinedListItem(systemDefinedListItems[2], 1000);
+
+    const localRootNode = items[1];
+    expect(localRootNode.dbItem).to.be.ok;
+    expect(localRootNode.dbItem?.kind).to.equal(DbItemKind.RootLocal);
+    expect(localRootNode.label).to.equal('local');
+    expect(localRootNode.tooltip).to.equal('Local databases');
+    expect(localRootNode.collapsibleState).to.equal(vscode.TreeItemCollapsibleState.Collapsed);
+    expect(localRootNode.children).to.be.ok;
+    expect(localRootNode.children.length).to.equal(0);
+  });
+
+  it('should render remote repository list nodes', async () => {
+    const dbConfig: DbConfig = {
+      remote: {
+        repositoryLists: [
+          {
+            name: 'my-list-1',
+            repositories: [
+              'owner1/repo1',
+              'owner1/repo2'
+            ]
+          },
+          {
+            name: 'my-list-2',
+            repositories: [
+              'owner1/repo1',
+              'owner2/repo1',
+              'owner2/repo2'
+            ]
+          },
+        ],
+        owners: [],
+        repositories: []
+      },
+    };
+
+    await saveDbConfig(dbConfig);
+
+    const dbTreeItems = await dbTreeDataProvider.getChildren();
+
+    expect(dbTreeItems).to.be.ok;
+    const items = dbTreeItems!;
+    expect(items.length).to.equal(2);
+
+    const remoteRootNode = items[0];
+    expect(remoteRootNode.dbItem).to.be.ok;
+    expect(remoteRootNode.collapsibleState).to.equal(vscode.TreeItemCollapsibleState.Collapsed);
+    expect(remoteRootNode.children).to.be.ok;
+    expect(remoteRootNode.children.length).to.equal(5);
+
+    const systemDefinedListItems = remoteRootNode.children.filter(item => item.dbItem?.kind === DbItemKind.RemoteSystemDefinedList);
+    expect(systemDefinedListItems.length).to.equal(3);
+
+    const userDefinedListItems = remoteRootNode.children.filter(item => item.dbItem?.kind === DbItemKind.RemoteUserDefinedList);
+    expect(userDefinedListItems.length).to.equal(2);
+    checkUserDefinedListItem(userDefinedListItems[0], 'my-list-1', ['owner1/repo1', 'owner1/repo2']);
+    checkUserDefinedListItem(userDefinedListItems[1], 'my-list-2', ['owner1/repo1', 'owner2/repo1', 'owner2/repo2']);
+  });
+
+  it('should render owner list nodes', async () => {
+    const dbConfig: DbConfig = {
+      remote: {
+        repositoryLists: [],
+        owners: ['owner1', 'owner2'],
+        repositories: []
+      },
+    };
+
+    await saveDbConfig(dbConfig);
+
+    const dbTreeItems = await dbTreeDataProvider.getChildren();
+
+    expect(dbTreeItems).to.be.ok;
+    const items = dbTreeItems!;
+    expect(items.length).to.equal(2);
+
+    const remoteRootNode = items[0];
+    expect(remoteRootNode.dbItem).to.be.ok;
+    expect(remoteRootNode.collapsibleState).to.equal(vscode.TreeItemCollapsibleState.Collapsed);
+    expect(remoteRootNode.children).to.be.ok;
+    expect(remoteRootNode.children.length).to.equal(5);
+
+    const ownerListItems = remoteRootNode.children.filter(item => item.dbItem?.kind === DbItemKind.RemoteOwner);
+    expect(ownerListItems.length).to.equal(2);
+    checkOwnerItem(ownerListItems[0], 'owner1');
+    checkOwnerItem(ownerListItems[1], 'owner2');
+  });
+
+  it('should render repository nodes', async () => {
+    const dbConfig: DbConfig = {
+      remote: {
+        repositoryLists: [],
+        owners: [],
+        repositories: ['owner1/repo1', 'owner1/repo2']
+      },
+    };
+
+    await saveDbConfig(dbConfig);
+
+    const dbTreeItems = await dbTreeDataProvider.getChildren();
+
+    expect(dbTreeItems).to.be.ok;
+    const items = dbTreeItems!;
+    expect(items.length).to.equal(2);
+
+    const remoteRootNode = items[0];
+    expect(remoteRootNode.dbItem).to.be.ok;
+    expect(remoteRootNode.collapsibleState).to.equal(vscode.TreeItemCollapsibleState.Collapsed);
+    expect(remoteRootNode.children).to.be.ok;
+    expect(remoteRootNode.children.length).to.equal(5);
+
+    const repoItems = remoteRootNode.children.filter(item => item.dbItem?.kind === DbItemKind.RemoteRepo);
+    expect(repoItems.length).to.equal(2);
+    checkRemoteRepoItem(repoItems[0], 'owner1/repo1');
+    checkRemoteRepoItem(repoItems[1], 'owner1/repo2');
+  });
+
+  async function saveDbConfig(dbConfig: DbConfig): Promise<void> {
+    await fs.writeJson(dbConfigFilePath, dbConfig);
+
+    // Once we have watching of the db config, this can happen
+    // at the start of the test.
+    await dbConfigStore.initialize();
+    dbTreeDataProvider = new DbTreeDataProvider(dbManager);
+  }
+
+  function checkRemoteSystemDefinedListItem(
+    item: DbTreeViewItem,
+    n: number
+  ): void {
+    expect(item.label).to.equal(`Top ${n} repositories`);
+    expect(item.tooltip).to.equal(`Top ${n} repositories of a language`);
+    expect(item.iconPath).to.deep.equal(new vscode.ThemeIcon('github'));
+    expect(item.collapsibleState).to.equal(vscode.TreeItemCollapsibleState.None);
+  }
+
+  function checkUserDefinedListItem(
+    item: DbTreeViewItem,
+    listName: string,
+    repos: string[]
+  ): void {
+    expect(item.label).to.equal(listName);
+    expect(item.tooltip).to.be.undefined;
+    expect(item.iconPath).to.be.undefined;
+    expect(item.collapsibleState).to.equal(vscode.TreeItemCollapsibleState.Collapsed);
+    expect(item.children).to.be.ok;
+    expect(item.children.length).to.equal(repos.length);
+
+    for (let i = 0; i < repos.length; i++) {
+      checkRemoteRepoItem(item.children[i], repos[i]);
+    }
+  }
+
+  function checkOwnerItem(
+    item: DbTreeViewItem,
+    ownerName: string
+  ): void {
+    expect(item.label).to.equal(ownerName);
+    expect(item.tooltip).to.be.undefined;
+    expect(item.iconPath).to.deep.equal(new vscode.ThemeIcon('organization'));
+    expect(item.collapsibleState).to.equal(vscode.TreeItemCollapsibleState.None);
+    expect(item.children).to.be.ok;
+    expect(item.children.length).to.equal(0);
+  }
+
+  function checkRemoteRepoItem(
+    item: DbTreeViewItem,
+    repoName: string
+  ): void {
+    expect(item.label).to.equal(repoName);
+    expect(item.tooltip).to.be.undefined;
+    expect(item.iconPath).to.deep.equal(new vscode.ThemeIcon('database'));
+    expect(item.collapsibleState).to.equal(vscode.TreeItemCollapsibleState.None);
+  }
+});