Overridden test with datarow also executes datarows on base implementation

[FlorensRab]

Description

When overriding a test decorated with the TestDataAttribute all the datarows on the base will also be executed. This makes overriding a test quite useless.

Steps to reproduce

[TestClass]
public class Test
{
    [DataTestMethod]
    [DataRow("cherry")]
    [DataRow("banana")]
    [DataRow("Apple")]
    public virtual void TestMethod(string a)
    {
        Assert.IsTrue(true);
    }
}

[TestClass]
public class MyTest : Test
{
    [DataTestMethod]
    [DataRow("orange")]
    [DataRow("pineapple")]
    public override void TestMethod(string a)
    {
        Assert.IsTrue(true);
    }
}

Expected behavior

MyTest (2 tests) [0:00.004] Success
TestMethod (2 tests) [0:00.004] Success
TestMethod (orange) [0:00.004] Success
TestMethod (pineapple) [0:00.000] Success
Test (3 tests) [0:00.005] Success
TestMethod (3 tests) [0:00.005] Success
TestMethod (Apple) [0:00.000] Success
TestMethod (banana) [0:00.000] Success
TestMethod (cherry) [0:00.005] Success

Actual behavior

MyTest (5 tests) [0:00.006] Success
TestMethod (5 tests) [0:00.006] Success
TestMethod (Apple) [0:00.000] Success
TestMethod (banana) [0:00.000] Success
TestMethod (cherry) [0:00.000] Success
TestMethod (orange) [0:00.006] Success
TestMethod (pineapple) [0:00.000] Success
Test (3 tests) [0:00.007] Success
TestMethod (3 tests) [0:00.007] Success
TestMethod (Apple) [0:00.000] Success
TestMethod (banana) [0:00.000] Success
TestMethod (cherry) [0:00.007] Success

Environment

Desired functionality was with version 1.1.18
changed behavior started with 1.2.0 beta and onwards

[jayaranigarg]

@FlorensRab : Thank you for reaching out to us.

Tagging @pvlakshm to comment on the expected behavior.

[jayaranigarg]

@FlorensRab : Acknowledging this to be a bug on our end.

[pvlakshm]

In this case, datarows on the base should not be executed.