[TestMethod]
public void GetProcessConfigSettingsByKeys_Test()
{
  // Setup
  this.mockProvider.Setup(x => x.GetBiAutoProcessConfigByKeys(123, 456, It.IsAny<int>()))
      .Returns(automationConfigurationSetting)
      .Verifiable();

  // Action
  var result = target.GetProcessConfigSettingsByKeys(123, 456, null);


  // Assert
  this.mockProvider.Verify(x => x.GetBiAutoProcessConfigByKeys(123, 456, null));


}

The code to verify that a method was called.
The this.mockProvider.Verify verifies that GetBiAutoProcessConfigByKeys is called.

Moq: Verify a Method is Called

c#

C#