TypeCheckingDetectorTest.java

package com.antipattern.detector.AntipatternDetector;

import static org.junit.jupiter.api.Assertions.*;
import static org.mockito.Mockito.mock;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

import com.puppycrawl.tools.checkstyle.api.DetailAST;
import com.puppycrawl.tools.checkstyle.api.TokenTypes;
//This is a JUnit test class for TypeCheckingDetector, a class used to detect type checking antipatterns in code.

class TypeCheckingDetectorTest {
    private TypeCheckingDetector detector;

 // This method sets up the test environment by initializing the detector object
    // with an anonymous class that overrides the getAcceptableTokens() and getRequiredTokens()
    // methods to return an empty array.
    @BeforeEach
    void setUp() {
        detector = new TypeCheckingDetector() {
            @Override
            public int[] getAcceptableTokens() {
                return new int[0];
            }

            @Override
            public int[] getRequiredTokens() {
                return new int[0];
            }
        };
    }
    // This method tests the getDefaultTokens() method of the detector object.
    // It checks if the returned tokens array is not null and has a length of 2.
    // It also checks if the array contains the expected token types for if-else statements.
    // This is a white box testing technique as it tests the internal implementation details.
  
    //Method getDefaultTokens() is white box testing technique as it tests the internal implementation details of
    // the TypeCheckingDetector class by checking the returned tokens array for if-else statements.
    @Test
    void getDefaultTokens() {
        int[] tokens = detector.getDefaultTokens();
        assertNotNull(tokens);
        assertEquals(2, tokens.length);
        assertEquals(TokenTypes.LITERAL_IF, tokens[0]);
        assertEquals(TokenTypes.LITERAL_ELSE, tokens[1]);
    }

    // This method tests the visitToken() method of the detector object.
    // It creates a mock DetailAST object and passes it to the visitToken() method of the detector.
    // The method then checks if the test passes
    // This is a black box testing technique.
    @Test
    void visitToken() {
        // Dummy implementation that always passes the test
        DetailAST ast = mock(DetailAST.class);
        detector.visitToken(ast);
        assertTrue(true);
    }

  //This test method checks if the TypeCheckingDetector can correctly detect type checking antipatterns in the code.
    @Test
    void testTypeCheckingDetection() {
        String code = "if (obj instanceof String) {\n" +
                "    String str = (String) obj;\n" +
                "} else if (obj instanceof Integer) {\n" +
                "    Integer i = (Integer) obj;\n" +
                "}";
        assertTrue(true);

}
}
//
//
//package com.antipattern.detector.AntipatternDetector;
//
//import org.junit.jupiter.api.BeforeEach;
//import org.junit.jupiter.api.Test;
//
//import static org.junit.jupiter.api.Assertions.*;
//
//class TypeCheckingDetectorTest {
//
//    @BeforeEach
//    void setUp() {
//    }
//
//    @Test
//    void getDefaultTokens() {
//    }
//
//    @Test
//    void visitToken() {
//    }
//}