Feature/credential provider ini

packages/credential-provider-ini/.gitignore

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+/node_modules/
+*.js
+*.js.map
+*.d.ts

packages/credential-provider-ini/__mocks__/fs.ts

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+interface FsModule {
+    __addMatcher(toMatch: string, toReturn: string): void;
+    __clearMatchers(): void;
+    readFile: (path: string, encoding: string, cb: Function) => void
+}
+
+const fs: FsModule = <FsModule>jest.genMockFromModule('fs');
+let matchers: {[key: string]: string} = {};
+
+function __addMatcher(toMatch: string, toReturn: string): void {
+    matchers[toMatch] = toReturn;
+}
+
+function __clearMatchers(): void {
+    matchers = {};
+}
+
+function readFile(
+    path: string,
+    encoding: string,
+    callback: (err: Error|null, data?: string) => void
+): void {
+    for (let key of Object.keys(matchers)) {
+        if (key === path) {
+            callback(null, matchers[key]);
+            return;
+        }
+    }
+
+    callback(new Error('ENOENT: no such file or directory'));
+}
+
+fs.__addMatcher = __addMatcher;
+fs.__clearMatchers = __clearMatchers;
+fs.readFile = readFile;
+
+module.exports = fs;

packages/credential-provider-ini/__mocks__/os.ts

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+interface OsModule {
+    homedir: () => string;
+}
+
+const os: OsModule = <OsModule>jest.genMockFromModule('os');
+const path = require('path');
+
+os.homedir = () => path.sep + path.join('home', 'user');
+
+module.exports = os;