擅长:python、mysql、java
<p>我希望这就是你要找的</p>
<pre><code>class A:
def method_A(self):
return "Hi"
class B:
def method_B(self):
instance_A = A()
result = instance_A.method_A()
return result
import mock
def mock_A(self):
return 'Bye'
def test_method_B():
with mock.patch.object(A, 'method_A', new=mock_A):
result = B().method_B()
assert result == 'Bye'
</code></pre>