Add tests with readonly fields (#45)

package.json

@@ -53,6 +53,6 @@
     "tslint": "^5.20.1",
     "tslint-config-airbnb": "^5.11.2",
     "tslint-no-unused-expression-chai": "^0.1.4",
-    "typescript": "^5.0.4"
+    "typescript": "^5.1.6"
   }
 }

test/resources/classes/class-with-readonly.ts

@@ -0,0 +1,7 @@
+export class TestReadonlyClass {
+  private readonly config: { [p: string]: any };
+
+  public getConfig = (): { [p: string]: any } => {
+      return this.config;
+  }
+}

test/resources/consumers/index.ts

@@ -5,3 +5,4 @@ export * from './function-consumer';
 export * from './other-consumer';
 export * from './broken-test-class-consumer';
 export * from './broken-default-class-consumer';
+export * from './readonly-class-consumer';

test/resources/consumers/readonly-class-consumer.ts

@@ -0,0 +1,12 @@
+import { TestReadonlyClass } from '../classes/class-with-readonly';
+
+export class ReadonlyClassConsumer {
+  private readonlyClass: TestReadonlyClass;
+  constructor() {
+    this.readonlyClass = new TestReadonlyClass();
+  }
+
+  public getConfig(): { [val: string]:  any } {
+    return this.readonlyClass.getConfig();
+  }
+}

test/spec/class-mock.spec.ts

@@ -6,7 +6,8 @@ import { MockManager } from '../../src/managers';
 import * as staticTestClass from '../resources/classes/static-test-class';
 import * as testClass from '../resources/classes/test-class';
 import * as defaultClass from '../resources/classes/test-default-export';
-import { DefaultClassConsumer, StaticTestClassConsumer, TestClassConsumer } from '../resources/consumers';
+import * as readonlyClass from '../resources/classes/class-with-readonly';
+import { DefaultClassConsumer, StaticTestClassConsumer, TestClassConsumer, ReadonlyClassConsumer } from '../resources/consumers';
 
 describe('Class Mock', () => {
   describe('Mock Class', () => {
@@ -26,6 +27,17 @@ describe('Class Mock', () => {
       manager.restore();
     });
 
+    it('should work with readonly fields', () => {
+      const manager = ImportMock.mockClass(readonlyClass, 'TestReadonlyClass');
+      const mockValue = {configValue: 'test-config'};
+
+      manager.mock('getConfig', mockValue)
+      const consumer = new ReadonlyClassConsumer();
+      expect(consumer.getConfig()).to.equal(mockValue);
+
+      manager.restore();
+    })
+
   });
 
   describe('Mock Static Class', () => {