KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta Join TestMu Conference

How to use DeltaComparator class of org.assertj.core.util.diff package

Best Assertj code snippet using org.assertj.core.util.diff.DeltaComparator

Source:DeltaComparator.java

...17 * Copy from https://code.google.com/p/java-diff-utils/.18 * <p>19 * @author mksenzov20 */21public class DeltaComparator implements Comparator<Delta<?>>, Serializable {22  private static final long serialVersionUID = 1L;23  public static final Comparator<Delta<?>> INSTANCE = new DeltaComparator();24  private DeltaComparator() {}25  public int compare(final Delta<?> a, final Delta<?> b) {26    final int posA = a.getOriginal().getPosition();27    final int posB = b.getOriginal().getPosition();28    if (posA > posB) {29      return 1;30    } else if (posA < posB) {31      return -1;32    }33    return 0;34  }35}...

DeltaComparator

Using AI Code Generation

1import org.assertj.core.util.diff.Delta;2import org.assertj.core.util.diff.DeltaComparator;3import org.assertj.core.util.diff.DeltaType;4import org.assertj.core.util.diff.DiffUtils;5import org.assertj.core.util.diff.Patch;6import org.junit.Test;7import java.util.ArrayList;8import java.util.Collections;9import java.util.List;10public class DiffUtilsTest {11    public void diffUtilsTest() {12        List<String> original = new ArrayList<>();13        original.add("A");14        original.add("B");15        original.add("C");16        original.add("D");17        original.add("E");18        original.add("F");19        original.add("G");20        original.add("H");21        original.add("I");22        original.add("J");23        original.add("K");24        original.add("L");25        original.add("M");26        original.add("N");27        original.add("O");28        original.add("P");29        original.add("Q");30        original.add("R");31        original.add("S");32        original.add("T");33        original.add("U");34        original.add("V");35        original.add("W");36        original.add("X");37        original.add("Y");38        original.add("Z");39        List<String> revised = new ArrayList<>();40        revised.add("A");41        revised.add("B");42        revised.add("C");43        revised.add("D");44        revised.add("E");45        revised.add("F");46        revised.add("G");47        revised.add("H");48        revised.add("I");49        revised.add("J");50        revised.add("K");51        revised.add("L");52        revised.add("M");53        revised.add("N");54        revised.add("O");55        revised.add("P");56        revised.add("Q");57        revised.add("R");58        revised.add("S");59        revised.add("T");60        revised.add("U");61        revised.add("V");62        revised.add("W");63        revised.add("X");64        revised.add("Y");65        revised.add("Z");66        Patch<String> patch = DiffUtils.diff(original, revised);67        List<Delta<String>> deltas = patch.getDeltas();68        Collections.sort(deltas, new DeltaComparator());69        for (Delta<String> delta : deltas) {70            DeltaType type = delta.getType();71            if (DeltaType.INSERT.equals(type)) {72                System.out.println("INSERT: " + delta.getRevised().getLines());

DeltaComparator

Using AI Code Generation

1import org.assertj.core.util.diff.Delta;2import org.assertj.core.util.diff.DeltaComparator;3import org.assertj.core.util.diff.DeltaType;4import org.assertj.core.util.diff.DiffUtils;5import org.assertj.core.util.diff.Patch;6import org.assertj.core.util.diff.PatchFailedException;7import java.util.ArrayList;8import java.util.List;9public class DiffUtilsTest {10    public static void main(String[] args) throws PatchFailedException {11        List<String> original = new ArrayList<>();12        original.add("1");13        original.add("2");14        original.add("3");15        original.add("4");16        original.add("5");17        original.add("6");18        original.add("7");19        original.add("8");20        original.add("9");21        original.add("10");22        original.add("11");23        original.add("12");24        original.add("13");25        original.add("14");26        original.add("15");27        original.add("16");28        original.add("17");29        original.add("18");30        original.add("19");31        original.add("20");32        List<String> revised = new ArrayList<>();33        revised.add("1");34        revised.add("2");35        revised.add("3");36        revised.add("4");37        revised.add("5");38        revised.add("6");39        revised.add("7");40        revised.add("8");41        revised.add("9");42        revised.add("10");43        revised.add("11");44        revised.add("12");45        revised.add("13");46        revised.add("14");47        revised.add("15");48        revised.add("16");49        revised.add("17");50        revised.add("18");51        revised.add("19");52        revised.add("20");53        Patch<String> patch = DiffUtils.diff(original, revised);54        System.out.println("patch: " + patch);55        List<Delta<String>> deltas = patch.getDeltas();56        System.out.println("deltas: " + deltas);57        DeltaComparator<String> deltaComparator = new DeltaComparator<>();58        deltas.sort(deltaComparator);59        System.out.println("deltas after sorting: " + deltas);60        List<String> patched = DiffUtils.patch(original, patch);61        System.out.println("patched: " + patched);62        System.out.println("patched.size() == original.size(): " + (patched.size() == original.size()));63        System.out.println("patched.equals(revised): " + patched.equals(revised));64        System.out.println("

DeltaComparator

Using AI Code Generation

1import org.assertj.core.util.diff.Delta;2import org.assertj.core.util.diff.DeltaComparator;3import org.assertj.core.util.diff.DeltaType;4import org.assertj.core.util.diff.Diff;5import org.assertj.core.util.diff.DiffUtils;6import org.assertj.core.util.diff.Patch;7import java.util.List;8public class DiffUtilsExample {9    public static void main(String[] args) {10        List<String> original = Arrays.asList("a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l");11        List<String> revised = Arrays.asList("a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l");12        Patch patch = DiffUtils.diff(original, revised);13        List<String> patched = DiffUtils.patch(original, patch);14        System.out.println("Patched: " + patched);15        List<Delta> deltas = patch.getDeltas();16        Collections.sort(deltas, new DeltaComparator());17        System.out.println("Deltas: " + deltas);18        for (Delta delta : deltas) {19            DeltaType type = delta.getType();20            String originalText = delta.getOriginal().toString();21            String revisedText = delta.getRevised().toString();22            switch (type) {23                    System.out.println("Change: " + originalText + " -> " + revisedText);24                    break;25                    System.out.println("Delete: " + originalText);26                    break;27                    System.out.println("Insert: " + revisedText);28                    break;29                    System.out.println("Equal: " + originalText);30                    break;31                    break;32            }33        }34        StringBuilder sb = new StringBuilder();35        for (Delta delta : deltas) {36            sb.append(delta.getOriginal().toString());37        }38        System.out.println("Original: " + sb.toString());39    }40}

DeltaComparator

Using AI Code Generation

1import org.assertj.core.util.diff.Delta;2import org.assertj.core.util.diff.DeltaComparator;3import org.assertj.core.util.diff.DeltaType;4import java.util.ArrayList;5import java.util.Collections;6import java.util.List;7public class DeltaComparatorTest {8    public static void main(String[] args) {9        List<Delta> deltas = new ArrayList<>();10        deltas.add(new Delta(DeltaType.CHANGE, "two"));11        deltas.add(new Delta(DeltaType.CHANGE, "one"));12        deltas.add(new Delta(DeltaType.CHANGE, "three"));13        deltas.add(new Delta(DeltaType.CHANGE, "four"));14        deltas.add(new Delta(DeltaType.CHANGE, "five"));15        deltas.add(new Delta(DeltaType.CHANGE, "six"));16        Collections.sort(deltas, new DeltaComparator());17        for (Delta delta : deltas) {18            System.out.println(delta);19        }20    }21}

DeltaComparator

Using AI Code Generation

1import org.assertj.core.util.diff.Delta;2import org.assertj.core.util.diff.DeltaComparator;3import org.assertj.core.util.diff.DiffUtils;4import org.assertj.core.util.diff.Patch;5import java.util.Arrays;6import java.util.List;7public class DiffUtilsTest {8    public static void main(String[] args) {9        List<String> original = Arrays.asList("a", "b", "c", "d", "e", "f", "g", "h");10        List<String> revised = Arrays.asList("a", "c", "b", "d", "e", "f", "g", "h");11        Patch<String> patch = DiffUtils.diff(original, revised);12        for (Delta<String> delta : patch.getDeltas()) {13            System.out.println(delta);14        }15        List<String> patched = DiffUtils.patch(original, patch);16        System.out.println(patched);17    }18}

DeltaComparator

Using AI Code Generation

1import org.assertj.core.util.diff.Delta2import org.assertj.core.util.diff.DeltaComparator3import org.assertj.core.util.diff.DiffUtils4import org.assertj.core.util.diff.Patch5import java.io.File6val file1 = File("file1.txt")7val file2 = File("file2.txt")8val patch: Patch = DiffUtils.diff(file1.readLines(), file2.readLines())9patch.deltas.sortWith(DeltaComparator())10patch.deltas.forEach { delta: Delta ->11    println(delta)12}13val result = DiffUtils.patch(file1.readLines(), patch)14println(result)

DeltaComparator

Using AI Code Generation

1package com.baeldung.diffutils;2import static org.assertj.core.api.Assertions.assertThat;3import java.io.BufferedReader;4import java.io.FileReader;5import java.io.IOException;6import java.util.List;7import org.assertj.core.util.diff.Delta;8import org.assertj.core.util.diff.DeltaComparator;9import org.assertj.core.util.diff.DiffUtils;10import org.assertj.core.util.diff.Patch;11import org.junit.Test;12public class DiffUtilsUnitTest {13    public void givenTwoFiles_whenDiffIsComputed_thenCorrect() throws IOException {14        List<String> original = readFile("src/test/resources/original.txt");15        List<String> revised = readFile("src/test/resources/revised.txt");16        Patch<String> patch = DiffUtils.diff(original, revised);17        assertThat(patch.getDeltas()).isNotEmpty();18    }19    public void givenTwoFiles_whenPatchIsComputed_thenCorrect() throws IOException {20        List<String> original = readFile("src/test/resources/original.txt");21        List<String> revised = readFile("src/test/resources/revised.txt");22        Patch<String> patch = DiffUtils.diff(original, revised);23        List<String> patched = DiffUtils.patch(original, patch);24        assertThat(patched).isEqualTo(revised);25    }26    public void givenTwoFiles_whenPatchIsComputedWithDeltaComparator_thenCorrect() throws IOException {27        List<String> original = readFile("src/test/resources/original.txt");28        List<String> revised = readFile("src/test/resources/revised.txt");29        Patch<String> patch = DiffUtils.diff(original, revised);30        List<Delta<String>> deltas = patch.getDeltas();31        deltas.sort(new DeltaComparator<String>());32        List<String> patched = DiffUtils.patch(original, deltas);33        assertThat(patched).isEqualTo(revised);34    }35    private List<String> readFile(String fileName) throws IOException {36        List<String> lines = new ArrayList<>();37        try (BufferedReader br = new BufferedReader(new FileReader(fileName))) {38            String line;39            while ((line = br.readLine()) != null) {40                lines.add(line);41            }42        }43        return lines;44    }45}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.