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

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

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

Source:MyersDiff.java

...16import java.util.ArrayList;17import java.util.List;18import org.assertj.core.util.diff.ChangeDelta;19import org.assertj.core.util.diff.Chunk;20import org.assertj.core.util.diff.DeleteDelta;21import org.assertj.core.util.diff.Delta;22import org.assertj.core.util.diff.DiffAlgorithm;23import org.assertj.core.util.diff.InsertDelta;24import org.assertj.core.util.diff.Patch;25/**26 * Copy from https://code.google.com/p/java-diff-utils/.27 * <p>28 * A clean-room implementation of <a href="http://www.cs.arizona.edu/people/gene/">29 * Eugene Myers</a> differencing algorithm.30 *31 * <p> See the paper at <a href="http://www.cs.arizona.edu/people/gene/PAPERS/diff.ps">32 * http://www.cs.arizona.edu/people/gene/PAPERS/diff.ps</a></p>33 *34 * @author <a href="mailto:juanco@suigeneris.org">Juanco Anez</a>35 * @param <T> The type of the compared elements in the 'lines'.36 */37public class MyersDiff<T> implements DiffAlgorithm<T> {38  /** The equalizer. */39  private final Equalizer<T> equalizer;40  /**41   * Constructs an instance of the Myers differencing algorithm.42   */43  public MyersDiff() {44    /* Default equalizer. */45    equalizer = Object::equals;46  }47  /**48   * {@inheritDoc}49   *50   * Return empty diff if get the error while procession the difference.51   */52  @Override53  public Patch<T> diff(final List<T> original, final List<T> revised) {54    checkArgument(original != null, "original list must not be null");55    checkArgument(revised != null, "revised list must not be null");56    PathNode path;57    try {58      path = buildPath(original, revised);59      return buildRevision(path, original, revised);60    } catch (IllegalStateException e) {61      e.printStackTrace();62      return new Patch<>();63    }64  }65  /**66   * Computes the minimum diffpath that expresses de differences67   * between the original and revised sequences, according68   * to Gene Myers differencing algorithm.69   *70   * @param orig The original sequence.71   * @param rev The revised sequence.72   * @return A minimum {@link PathNode Path} across the differences graph.73   * @throws IllegalStateException if a diff path could not be found.74   */75  public PathNode buildPath(final List<T> orig, final List<T> rev) {76    checkArgument(orig != null, "original sequence is null");77    checkArgument(rev != null, "revised sequence is null");78    // these are local constants79    final int N = orig.size();80    final int M = rev.size();81    final int MAX = N + M + 1;82    final int size = 1 + 2 * MAX;83    final int middle = size / 2;84    final PathNode[] diagonal = new PathNode[size];85    diagonal[middle + 1] = new Snake(0, -1, null);86    for (int d = 0; d < MAX; d++) {87      for (int k = -d; k <= d; k += 2) {88        final int kmiddle = middle + k;89        final int kplus = kmiddle + 1;90        final int kminus = kmiddle - 1;91        PathNode prev;92        int i;93        if ((k == -d) || (k != d && diagonal[kminus].i < diagonal[kplus].i)) {94          i = diagonal[kplus].i;95          prev = diagonal[kplus];96        } else {97          i = diagonal[kminus].i + 1;98          prev = diagonal[kminus];99        }100        diagonal[kminus] = null; // no longer used101        int j = i - k;102        PathNode node = new DiffNode(i, j, prev);103        // orig and rev are zero-based104        // but the algorithm is one-based105        // that's why there's no +1 when indexing the sequences106        while (i < N && j < M && equals(orig.get(i), rev.get(j))) {107          i++;108          j++;109        }110        if (i > node.i) node = new Snake(i, j, node);111        diagonal[kmiddle] = node;112        if (i >= N && j >= M) return diagonal[kmiddle];113      }114      diagonal[middle + d - 1] = null;115    }116    // According to Myers, this cannot happen117    throw new IllegalStateException("could not find a diff path");118  }119  private boolean equals(T orig, T rev) {120    return equalizer.equals(orig, rev);121  }122  /**123   * Constructs a {@link Patch} from a difference path.124   *125   * @param path The path.126   * @param orig The original sequence.127   * @param rev The revised sequence.128   * @return A {@link Patch} script corresponding to the path.129   */130  public Patch<T> buildRevision(PathNode path, List<T> orig, List<T> rev) {131    checkArgument(path != null, "path is null");132    checkArgument(orig != null, "original sequence is null");133    checkArgument(rev != null, "revised sequence is null");134    Patch<T> patch = new Patch<>();135    if (path.isSnake())136      path = path.prev;137    while (path != null && path.prev != null && path.prev.j >= 0) {138      checkState(!path.isSnake(), "bad diffpath: found snake when looking for diff");139      int i = path.i;140      int j = path.j;141      path = path.prev;142      int ianchor = path.i;143      int janchor = path.j;144      Chunk<T> original = new Chunk<>(ianchor, copyOfRange(orig, ianchor, i));145      Chunk<T> revised = new Chunk<>(janchor, copyOfRange(rev, janchor, j));146      Delta<T> delta;147      if (original.size() == 0 && revised.size() != 0) {148        delta = new InsertDelta<>(original, revised);149      } else if (original.size() > 0 && revised.size() == 0) {150        delta = new DeleteDelta<>(original, revised);151      } else {152        delta = new ChangeDelta<>(original, revised);153      }154      patch.addDelta(delta);155      if (path.isSnake()) path = path.prev;156    }157    return patch;158  }159  /**160   * Creates a new list containing the elements returned by {@link List#subList(int, int)}.161   * @param original The original sequence. Must not be {@code null}.162   * @param fromIndex low endpoint (inclusive) of the subList.163   * @param to high endpoint (exclusive) of the subList.164   * @return A new list of the specified range within the original list....

DeleteDelta

Using AI Code Generation

1package com.journaldev.util;2import java.util.ArrayList;3import java.util.List;4import org.assertj.core.util.diff.DeleteDelta;5import org.assertj.core.util.diff.Delta;6import org.assertj.core.util.diff.DiffUtils;7import org.assertj.core.util.diff.InsertDelta;8import org.assertj.core.util.diff.Patch;9public class ListDiff {10    public static void main(String[] args) {11        List<String> original = new ArrayList<String>();12        original.add("A");13        original.add("B");14        original.add("C");15        original.add("D");16        original.add("E");17        List<String> revised = new ArrayList<String>();18        revised.add("A");19        revised.add("C");20        revised.add("E");21        revised.add("F");22        revised.add("G");23        Patch patch = DiffUtils.diff(original, revised);24        for (Delta delta : patch.getDeltas()) {25            System.out.println(delta);26        }27        List<String> newList = new ArrayList<String>();28        for (Delta delta : patch.getDeltas()) {29            if (delta instanceof InsertDelta) {30                InsertDelta insertDelta = (InsertDelta) delta;31                newList.add(insertDelta.getRevised().toString());32            } else if (delta instanceof DeleteDelta) {33                DeleteDelta deleteDelta = (DeleteDelta) delta;34                newList.add(deleteDelta.getOriginal().toString());35            }36        }37        System.out.println("New List: " + newList);38    }39}40DeleteDelta{original=[B], revised=[]}41InsertDelta{original=[], revised=[F]}42InsertDelta{original=[], revised=[G]}

DeleteDelta

Using AI Code Generation

1import org.assertj.core.util.diff.*;2String s1 = "The quick brown fox jumps over the lazy dog";3String s2 = "The quick brown fox jumps over the lazy dog";4DeleteDelta delta = new DeleteDelta(new Chunk<String>(s1), new Chunk<String>(s2));5delta.getOriginal().insert(0, "Hello ");6delta.getRevised().insert(0, "Hello ");7Chunk<String> original = delta.getOriginal();8Chunk<String> revised = delta.getRevised();9int position = delta.getOriginal().getPosition();10position = delta.getRevised().getPosition();11int size = delta.getOriginal().size();12size = delta.getRevised().size();13List<String> lines = delta.getOriginal().getLines();14lines = delta.getRevised().getLines();15String str = delta.getOriginal().toString();16str = delta.getRevised().toString();17Delta.TYPE type = delta.getType();18boolean isInsert = delta.isInsert();19boolean isDelete = delta.isDelete();20boolean isChange = delta.isChange();21boolean isEqual = delta.equals(delta);22int hashCode = delta.hashCode();23str = delta.toString();24str = delta.toString(" ");25str = delta.toString(" ", 1);26str = delta.toString(" ", 1, true);27str = delta.toString(" ", 1, true, true);

DeleteDelta

Using AI Code Generation

1import java.util.List;2import org.assertj.core.util.diff.*;3public class Diff {4    public static void main(String[] args) {5z";60";7        List<Delta<String>> deltas = DiffUtils.diff(s1.lines().collect(Collectors.toList()), s2.lines().collect(Collectors.toList()));8        DeleteDelta<String> deleteDelta = null;9        for (Delta<String> delta : deltas) {10            if (delta instanceof DeleteDelta) {11                deleteDelta = (DeleteDelta<String>) delta;12            }13        }14        if (deleteDelta != null) {15            System.out.println("Difference found at line " + (deleteDelta.getSource().getPosition() + 1));16            System.out.println("The line is " + deleteDelta.getSource().getLines().get(0));17        }18    }19}

DeleteDelta

Using AI Code Generation

1import org.assertj.core.util.diff.*;2import java.util.*;3public class Diff {4    public static void main(String[] args) {5        List<String> a = Arrays.asList("a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o");6        List<String> b = Arrays.asList("a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "p", "o");7        Patch<String> patch = DiffUtils.diff(a, b);8        System.out.println("patch: " + patch);9        List<Delta<String>> deltas = patch.getDeltas();10        for (Delta<String> delta : deltas) {11            if (delta instanceof DeleteDelta) {12                System.out.println("DeleteDelta: " + delta);13            }14        }15    }16}

DeleteDelta

Using AI Code Generation

1package org.assertj.core.util.diff;2import java.util.ArrayList;3import java.util.Arrays;4import java.util.Collections;5import java.util.List;6import org.junit.jupiter.api.Test;7public class DiffTest {8	public void test() {9		List<String> original = new ArrayList<>();10		original.add("1");11		original.add("2");12		original.add("3");13		original.add("4");14		original.add("5");15		original.add("6");16		original.add("7");17		original.add("8");18		original.add("9");19		original.add("10");20		original.add("11");21		original.add("12");22		original.add("13");23		original.add("14");24		original.add("15");25		original.add("16");26		original.add("17");27		original.add("18");28		original.add("19");29		original.add("20");30		original.add("21");31		original.add("22");32		original.add("23");33		original.add("24");34		original.add("25");35		original.add("26");36		original.add("27");37		original.add("28");38		original.add("29");39		original.add("30");40		original.add("31");41		original.add("32");42		original.add("33");43		original.add("34");44		original.add("35");45		original.add("36");46		original.add("37");47		original.add("38");48		original.add("39");49		original.add("40");50		original.add("41");51		original.add("42");52		original.add("43");53		original.add("44");54		original.add("45");55		original.add("46");56		original.add("47");57		original.add("48");58		original.add("49");59		original.add("50");60		original.add("51");61		original.add("52");62		original.add("53");63		original.add("54");64		original.add("55");65		original.add("56");66		original.add("57");67		original.add("

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.