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}

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