Redundant Assertion

Definition:

• This smell occurs when test methods contain assertion statements that are either always true or always false. A test is intended to return a binary outcome of whether the intended result is correct or not, and should not return the same output regardless of the input.

Code Example:

@Test
public void testTrue() {
    assertEquals(true, true);
}

References:

Quality attributes

• - Code Example

• - Cause and Effect

• - Frequency

• - Refactoring

• An Exploratory Study on the Refactoring of Unit Test Files in Android Applications

• Automatic Identification of High-Impact Bug Report by Product and Test Code Quality

• Automatic generation of smell-free unit tests

• Categorising Test Smells

• Developers perception on the severity of test smells: an empirical study

• Handling Test Smells in Python: Results from a Mixed-Method Study

• Investigating Test Smells in JavaScript Test Code

• JUnit Anti-patterns

• On the Distribution of “Simple Stupid Bugs” in Unit Test Files: An Exploratory Study

• On the diffusion of test smells and their relationship with test code quality of Java projects

• On the distribution of test smells in open source Android applications: an exploratory study

• On the influence of Test Smells on Test Coverage

• On the test smells detection: an empirical study on the jnose test accuracy

• On the use of test smells for prediction of flaky tests

• PyNose: A Test Smell Detector For Python

• Software Unit Test Smells

• Test Smell Detection Tools: A Systematic Mapping Study

• The secret life of test smells-an empirical study on test smell evolution and maintenance

• What the Smell? An Empirical Investigation on the Distribution and Severity of Test Smells in Open Source Android Applications

• tsDetect: an open source test smells detection tool