installing and configuring nosetests

Author: DonJayamanne

src/client/common/installer.ts

@@ -155,9 +155,10 @@ export function disableLinter(product: Product) {
     pythonConfig.update(settingToDisable, false);
 }
 
-function isPyTestInstalled(): Promise<boolean> {
+function isTestFrameworkInstalled(product: Product): Promise<boolean> {
+    const fileToRun = product === Product.pytest ? 'py.test' : 'nosetests';
     const def = createDeferred<boolean>();
-    execPythonFile('py.test', ['--version'], vscode.workspace.rootPath, false)
+    execPythonFile(fileToRun, ['--version'], vscode.workspace.rootPath, false)
         .then(() => {
             def.resolve(true);
         }).catch(reason => {
@@ -171,8 +172,13 @@ function isPyTestInstalled(): Promise<boolean> {
     return def.promise;
 }
 function isProductInstalled(product: Product): Promise<boolean> {
-    if (product === Product.pytest) {
-        return isPyTestInstalled();
+    switch (product) {
+        case Product.pytest: {
+            return isTestFrameworkInstalled(product);
+        }
+        case Product.nosetest: {
+            return isTestFrameworkInstalled(product);
+        }
     }
     throw new Error('Not supported');
 }

src/client/unittests/nosetest/testConfigurationManager.ts

@@ -1,6 +1,9 @@
 import * as vscode from 'vscode';
 import { TestConfigurationManager } from '../common/testConfigurationManager';
-
+import * as fs from 'fs';
+import * as path from 'path';
+import { Installer, Product } from '../../common/installer';
+ 
 export class ConfigurationManager extends TestConfigurationManager {
     public enable(): Thenable<any> {
         const pythonConfig = vscode.workspace.getConfiguration('python');
@@ -11,12 +14,47 @@ export class ConfigurationManager extends TestConfigurationManager {
         return pythonConfig.update('unitTest.nosetestsEnabled', false);
     }
 
+    private static configFilesExist(rootDir: string): Promise<boolean> {
+        const promises = [
+            new Promise<boolean>(resolve => {
+                fs.exists(path.join(rootDir, '.noserc'), exists => { resolve(true); });
+            }),
+            new Promise<boolean>(resolve => {
+                fs.exists(path.join(rootDir, 'nose.cfg'), exists => { resolve(true); });
+            })];
+        return Promise.all(promises).then(values => {
+            return values.some(exists => exists);
+        });
+    }
     public configure(rootDir: string): Promise<any> {
-        // TODO: 
-        // 1. Ask if pytest configuration exists
-        // 2. Ask to create a py test config or use arguments
-        // 3. Finally check if pytest is installed, if not prompt to install it
-        //    Do we have issues if nose is installed in a separate place (will nose be able to import the files??)
-        return Promise.resolve();
+        const args = [];
+        const configFileOptionLabel = 'Use existing config file';
+        const options: vscode.QuickPickItem[] = [];
+        let installer = new Installer(this.outputChannel);
+        return ConfigurationManager.configFilesExist(rootDir).then(configExists => {
+            if (configExists) {
+                options.push({
+                    label: configFileOptionLabel,
+                    description: '.noserc or nose.cfg'
+                });
+            }
+        }).then(() => {
+            return this.getTestDirs(rootDir);
+        }).then(subDirs => {
+            return this.selectTestDir(rootDir, subDirs, options);
+        }).then(testDir => {
+            if (typeof testDir === 'string' && testDir !== configFileOptionLabel) {
+                args.push(testDir);
+            }
+        }).then(() => {
+            return installer.isProductInstalled(Product.nosetest);
+        }).then(installed => {
+            if (!installed){
+                return installer.installProduct(Product.nosetest);
+            }
+        }).then(() => {
+            const pythonConfig = vscode.workspace.getConfiguration('python');
+            return pythonConfig.update('unitTest.nosetestArgs', args);
+        });
     }
 }