Dart 模拟函数

Question

如何测试是否调用了模拟函数？

我在Mocking with Dart - How to test that a function passed as a parameter was called? 上找到了这个示例，并尝试对其进行扩展以检查该函数是否被调用。

library test2;

import "package:unittest/unittest.dart";
import "package:mock/mock.dart";

class MockFunction extends Mock {
  call(int a, int b) => a + b;
}

void main() {
  test("aa", () {

    var mockf = new MockFunction();
    expect(mockf(1, 2), 3);
    mockf.getLogs(callsTo(1, 2)).verify(happenedOnce);
  });
}

看来 mockf.getLogs() 结构是空的...

Answer 1

您必须模拟方法并在日志中指定它们的名称。这是工作代码：

library test2;

import "package:unittest/unittest.dart";
import "package:mock/mock.dart";

class MockFunction extends Mock {
  MockFunction(){
    when(callsTo('call')).alwaysCall(this.foo);
  }
  foo(int a, int b) {
    return a + b;
    }
}

void main() {
  test("aa", () {    
    var mockf = new MockFunction();
    expect(mockf(1, 2), 3);
    mockf.calls('call', 1, 2).verify(happenedOnce);
  });
}

编辑： 回答类似问题：Dart How to mock a procedure