Add arc tree data provider tests (#12758)

* Add arc tree data provider tests

* Generic ResourceModel

* no message

* undo

* Fix compile error

extensions/arc/src/test/mocks/fakeAzdataApi.ts

@@ -0,0 +1,77 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as azdataExt from 'azdata-ext';
+
+/**
+ * Simple fake Azdata Api used to mock the API during tests
+ */
+export class FakeAzdataApi implements azdataExt.IAzdataApi {
+
+	public postgresInstances: azdataExt.PostgresServerListResult[] = [];
+	public miaaInstances: azdataExt.SqlMiListResult[] = [];
+
+	//
+	// API Implementation
+	//
+	public get arc() {
+		const self = this;
+		return {
+			dc: {
+				create(_namespace: string, _name: string, _connectivityMode: string, _resourceGroup: string, _location: string, _subscription: string, _profileName?: string, _storageClass?: string): Promise<azdataExt.AzdataOutput<void>> { throw new Error('Method not implemented.'); },
+				endpoint: {
+					async list(): Promise<azdataExt.AzdataOutput<azdataExt.DcEndpointListResult[]>> { return <any>{ result: [] }; }
+				},
+				config: {
+					list(): Promise<azdataExt.AzdataOutput<azdataExt.DcConfigListResult[]>> { throw new Error('Method not implemented.'); },
+					async show(): Promise<azdataExt.AzdataOutput<azdataExt.DcConfigShowResult>> { return <any>{ result: undefined! }; }
+				}
+			},
+			postgres: {
+				server: {
+					delete(_name: string): Promise<azdataExt.AzdataOutput<void>> { throw new Error('Method not implemented.'); },
+					async list(): Promise<azdataExt.AzdataOutput<azdataExt.PostgresServerListResult[]>> { return <any>{ result: self.postgresInstances }; },
+					show(_name: string): Promise<azdataExt.AzdataOutput<azdataExt.PostgresServerShowResult>> { throw new Error('Method not implemented.'); },
+					edit(
+						_name: string,
+						_args: {
+							adminPassword?: boolean,
+							coresLimit?: string,
+							coresRequest?: string,
+							engineSettings?: string,
+							extensions?: string,
+							memoryLimit?: string,
+							memoryRequest?: string,
+							noWait?: boolean,
+							port?: number,
+							replaceEngineSettings?: boolean,
+							workers?: number
+						},
+						_additionalEnvVars?: { [key: string]: string }): Promise<azdataExt.AzdataOutput<void>> { throw new Error('Method not implemented.'); }
+				}
+			},
+			sql: {
+				mi: {
+					delete(_name: string): Promise<azdataExt.AzdataOutput<void>> { throw new Error('Method not implemented.'); },
+					async list(): Promise<azdataExt.AzdataOutput<azdataExt.SqlMiListResult[]>> { return <any>{ result: self.miaaInstances }; },
+					show(_name: string): Promise<azdataExt.AzdataOutput<azdataExt.SqlMiShowResult>> { throw new Error('Method not implemented.'); }
+				}
+			}
+		};
+	}
+	getPath(): Promise<string> {
+		throw new Error('Method not implemented.');
+	}
+	login(_endpoint: string, _username: string, _password: string): Promise<azdataExt.AzdataOutput<any>> {
+		return <any>undefined;
+	}
+	version(): Promise<azdataExt.AzdataOutput<string>> {
+		throw new Error('Method not implemented.');
+	}
+	getSemVersion(): any {
+		throw new Error('Method not implemented.');
+	}
+
+}