How to use Delta method of org.assertj.core.util.diff.Delta class

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

Source:MyersDiff.java Github

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...14import static org.assertj.core.util.Preconditions.checkArgument;15import static org.assertj.core.util.Preconditions.checkState;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 = new Equalizer<T>() {46 @Override47 public boolean equals(T original, T revised) {48 return original.equals(revised);49 }50 };51 }52 /**53 * {@inheritDoc}54 *55 * Return empty diff if get the error while procession the difference.56 */57 public Patch<T> diff(final List<T> original, final List<T> revised) {58 checkArgument(original != null, "original list must not be null");59 checkArgument(revised != null, "revised list must not be null");60 PathNode path;61 try {62 path = buildPath(original, revised);63 return buildRevision(path, original, revised);64 } catch (IllegalStateException e) {65 e.printStackTrace();66 return new Patch<>();67 }68 }69 /**70 * Computes the minimum diffpath that expresses de differences71 * between the original and revised sequences, according72 * to Gene Myers differencing algorithm.73 *74 * @param orig The original sequence.75 * @param rev The revised sequence.76 * @return A minimum {@link PathNode Path} across the differences graph.77 * @throws IllegalStateException if a diff path could not be found.78 */79 public PathNode buildPath(final List<T> orig, final List<T> rev) {80 checkArgument(orig != null, "original sequence is null");81 checkArgument(rev != null, "revised sequence is null");82 // these are local constants83 final int N = orig.size();84 final int M = rev.size();85 final int MAX = N + M + 1;86 final int size = 1 + 2 * MAX;87 final int middle = size / 2;88 final PathNode diagonal[] = new PathNode[size];89 diagonal[middle + 1] = new Snake(0, -1, null);90 for (int d = 0; d < MAX; d++) {91 for (int k = -d; k <= d; k += 2) {92 final int kmiddle = middle + k;93 final int kplus = kmiddle + 1;94 final int kminus = kmiddle - 1;95 PathNode prev;96 int i;97 if ((k == -d) || (k != d && diagonal[kminus].i < diagonal[kplus].i)) {98 i = diagonal[kplus].i;99 prev = diagonal[kplus];100 } else {101 i = diagonal[kminus].i + 1;102 prev = diagonal[kminus];103 }104 diagonal[kminus] = null; // no longer used105 int j = i - k;106 PathNode node = new DiffNode(i, j, prev);107 // orig and rev are zero-based108 // but the algorithm is one-based109 // that's why there's no +1 when indexing the sequences110 while (i < N && j < M && equals(orig.get(i), rev.get(j))) {111 i++;112 j++;113 }114 if (i > node.i) node = new Snake(i, j, node);115 diagonal[kmiddle] = node;116 if (i >= N && j >= M) return diagonal[kmiddle];117 }118 diagonal[middle + d - 1] = null;119 }120 // According to Myers, this cannot happen121 throw new IllegalStateException("could not find a diff path");122 }123 private boolean equals(T orig, T rev) {124 return equalizer.equals(orig, rev);125 }126 /**127 * Constructs a {@link Patch} from a difference path.128 *129 * @param path The path.130 * @param orig The original sequence.131 * @param rev The revised sequence.132 * @return A {@link Patch} script corresponding to the path.133 */134 public Patch<T> buildRevision(PathNode path, List<T> orig, List<T> rev) {135 checkArgument(path != null, "path is null");136 checkArgument(orig != null, "original sequence is null");137 checkArgument(rev != null, "revised sequence is null");138 Patch<T> patch = new Patch<>();139 if (path.isSnake())140 path = path.prev;141 while (path != null && path.prev != null && path.prev.j >= 0) {142 checkState(!path.isSnake(), "bad diffpath: found snake when looking for diff");143 int i = path.i;144 int j = path.j;145 path = path.prev;146 int ianchor = path.i;147 int janchor = path.j;148 Chunk<T> original = new Chunk<>(ianchor, copyOfRange(orig, ianchor, i));149 Chunk<T> revised = new Chunk<>(janchor, copyOfRange(rev, janchor, j));150 Delta<T> delta;151 if (original.size() == 0 && revised.size() != 0) {152 delta = new InsertDelta<>(original, revised);153 } else if (original.size() > 0 && revised.size() == 0) {154 delta = new DeleteDelta<>(original, revised);155 } else {156 delta = new ChangeDelta<>(original, revised);157 }158 patch.addDelta(delta);159 if (path.isSnake()) path = path.prev;160 }161 return patch;162 }163 /**164 * Creates a new list containing the elements returned by {@link List#subList(int, int)}.165 * @param original The original sequence. Must not be {@code null}.166 * @param fromIndex low endpoint (inclusive) of the subList.167 * @param to high endpoint (exclusive) of the subList.168 * @return A new list of the specified range within the original list.169 170 */171 private List<T> copyOfRange(final List<T> original, final int fromIndex, final int to) {172 return new ArrayList<>(original.subList(fromIndex, to));...

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Source:JsonDiff.java Github

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1package com.trickl.assertj.core.internal;2import com.trickl.assertj.core.api.json.JsonContainer;3import com.trickl.assertj.util.diff.JsonFieldDelta;4import com.trickl.assertj.util.diff.JsonRootDelta;5import java.io.IOException;6import java.util.Collections;7import java.util.LinkedList;8import java.util.List;9import org.assertj.core.util.VisibleForTesting;10import org.assertj.core.util.diff.Delta;11import org.json.JSONException;12import org.skyscreamer.jsonassert.FieldComparisonFailure;13import org.skyscreamer.jsonassert.JSONCompare;14import org.skyscreamer.jsonassert.JSONCompareResult;15import org.skyscreamer.jsonassert.comparator.JSONComparator;16/** Compares the contents of two JSON objects. */17@VisibleForTesting18public class JsonDiff {19 /**20 * Compares JSON object provided to the expected JSON object using provided comparator, and21 * returns the results of the comparison.22 *23 * @param actual actual JSON object24 * @param expected expected JSON object25 * @param comparator comparator to use26 * @return A list of differences27 * @throws IOException IF there's an error parsing the JSON28 */29 @VisibleForTesting30 public List<Delta<String>> diff(31 JsonContainer actual, JsonContainer expected, JSONComparator comparator) throws IOException {32 try {33 String expectedStr = expected.getJson();34 String actualStr = actual.getJson();35 JSONCompareResult result = JSONCompare.compareJSON(expectedStr, actualStr, comparator);36 return asDiff(result, expectedStr, actualStr);37 } catch (JSONException ex) {38 throw new IOException(ex);39 }40 }41 private List<Delta<String>> asDiff(JSONCompareResult result, String expectedStr, String actualStr)42 throws JSONException {43 if (result.passed()) {44 return Collections.emptyList();45 }46 List<Delta<String>> diffs = new LinkedList<>();47 for (FieldComparisonFailure missingField : result.getFieldMissing()) {48 diffs.add(new JsonFieldDelta<>(missingField, Delta.TYPE.DELETE));49 }50 for (FieldComparisonFailure changedField : result.getFieldFailures()) {51 diffs.add(new JsonFieldDelta<>(changedField, Delta.TYPE.CHANGE));52 }53 for (FieldComparisonFailure unexpectedField : result.getFieldUnexpected()) {54 diffs.add(new JsonFieldDelta<>(unexpectedField, Delta.TYPE.INSERT));55 }56 if (diffs.isEmpty()) {57 String expectedNoFormat = expectedStr.replace("\n", "").replace("\r", "");58 String actualNoFormat = actualStr.replace("\n", "").replace("\r", "");59 diffs.add(new JsonRootDelta<>(expectedNoFormat, actualNoFormat, result.getMessage()));60 }61 return diffs;62 }63}

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Source:ShouldHaveContent_create_Test.java Github

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...20import static org.mockito.Mockito.when;21import java.util.List;22import org.assertj.core.description.TextDescription;23import org.assertj.core.util.Lists;24import org.assertj.core.util.diff.Delta;25import org.junit.Test;26public class ShouldHaveContent_create_Test {27 private static final String DIFF = "diff !";28 @Test29 public void should_create_error_message() {30 final FakeFile file = new FakeFile("xyz");31 @SuppressWarnings("unchecked")32 Delta<String> delta = mock(Delta.class);33 when(delta.toString()).thenReturn(DIFF);34 List<Delta<String>> diffs = Lists.newArrayList(delta);35 ErrorMessageFactory factory = shouldHaveContent(file, defaultCharset(), diffs);36 String message = factory.create(new TextDescription("Test"), STANDARD_REPRESENTATION);37 assertThat(message).isEqualTo(format("[Test] %n"38 + "File:%n"39 + " <xyz>%n"40 + "read with charset <%s> does not have the expected content:%n%n"41 + DIFF,42 defaultCharset().name()));43 }44}...

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Delta

Using AI Code Generation

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1import org.assertj.core.util.diff.Delta;2import org.assertj.core.util.diff.DiffUtils;3import org.assertj.core.util.diff.Patch;4import java.util.ArrayList;5import java.util.List;6public class Main {7 public static void main(String[] args) {8 List<String> original = new ArrayList<>();9 original.add("a");10 original.add("b");11 original.add("c");12 original.add("d");13 original.add("e");14 original.add("f");15 original.add("g");16 original.add("h");17 original.add("i");18 original.add("j");19 original.add("k");20 original.add("l");21 original.add("m");22 original.add("n");23 original.add("o");24 original.add("p");25 original.add("q");26 original.add("r");27 original.add("s");28 original.add("t");29 original.add("u");30 original.add("v");31 original.add("w");32 original.add("x");33 original.add("y");34 original.add("z");35 List<String> revised = new ArrayList<>();36 revised.add("a");37 revised.add("b");38 revised.add("c");39 revised.add("d");40 revised.add("e");41 revised.add("f");42 revised.add("g");43 revised.add("h");44 revised.add("i");45 revised.add("j");46 revised.add("k");47 revised.add("l");48 revised.add("m");49 revised.add("n");50 revised.add("o");51 revised.add("p");52 revised.add("q");53 revised.add("r");54 revised.add("s");55 revised.add("t");56 revised.add("u");57 revised.add("v");58 revised.add("w");59 revised.add("x");60 revised.add("y");61 revised.add("z");62 Patch patch = DiffUtils.diff(original, revised);63 for (Delta delta : patch.getDeltas()) {64 System.out.println(delta);65 }66 }67}

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Delta

Using AI Code Generation

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1package com.delta;2import java.util.ArrayList;3import java.util.List;4import org.assertj.core.util.diff.Delta;5import org.assertj.core.util.diff.DeltaVisitor;6import org.assertj.core.util.diff.DiffUtils;7import org.assertj.core.util.diff.Patch;8public class DeltaDiff {9public static void main(String[] args) {10 List<String> original = new ArrayList<String>();11 List<String> revised = new ArrayList<String>();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 original.add("21");33 original.add("22");34 original.add("23");35 original.add("24");36 original.add("25");37 original.add("26");38 original.add("27");39 original.add("28");40 original.add("29");41 original.add("30");42 original.add("31");43 original.add("32");44 original.add("33");45 original.add("34");46 original.add("35");47 original.add("36");48 original.add("37");49 original.add("38");50 original.add("39");51 original.add("40");52 original.add("41");53 original.add("42");54 original.add("43");55 original.add("44");56 original.add("45");57 original.add("46");58 original.add("47");59 original.add("48");60 original.add("49");61 original.add("50");62 original.add("51");63 original.add("52");64 original.add("53");65 original.add("54");66 original.add("55");67 original.add("56");68 original.add("57");69 original.add("58");70 original.add("59");71 original.add("60");72 original.add("61");73 original.add("62");74 original.add("63");75 original.add("64");76 original.add("65");77 original.add("66");78 original.add("67");

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Delta

Using AI Code Generation

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1import org.assertj.core.util.diff.Delta;2import org.assertj.core.util.diff.Delta.TYPE;3import org.assertj.core.util.diff.DiffUtils;4import org.assertj.core.util.diff.Patch;5import java.util.Arrays;6import java.util.List;7public class DiffUtilsExample {8public static void main(String[] args) {9List<String> original = Arrays.asList("a", "b", "c");10List<String> revised = Arrays.asList("a", "d", "c");11Patch patch = DiffUtils.diff(original, revised);12for (Delta delta: patch.getDeltas()) {13System.out.println(delta);14System.out.println(delta.getType());15System.out.println(delta.getOriginal());16System.out.println(delta.getRevised());17System.out.println(delta.getSource());18System.out.println(delta.getTarget());19}20}21}

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Delta

Using AI Code Generation

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1import java.util.ArrayList;2import java.util.Arrays;3import java.util.List;4import org.assertj.core.util.diff.Delta;5import org.assertj.core.util.diff.Delta.TYPE;6public class DeltaMethod {7 public static void main(String[] args) {8 List<String> original = Arrays.asList("a", "b", "c", "d", "e", "f");9 List<String> revised = Arrays.asList("a", "c", "b", "e", "f", "g");10 List<Delta<String>> deltas = DeltaMethod.computeDelta(original, revised);11 System.out.println(deltas);12 }13 public static <T> List<Delta<T>> computeDelta(List<T> original, List<T> revised) {14 List<Delta<T>> deltas = new ArrayList<Delta<T>>();15 int originalSize = original.size();16 int revisedSize = revised.size();17 int start = 0;18 while (start < originalSize && start < revisedSize && original.get(start).equals(revised.get(start))) {19 start++;20 }21 int end = 0;22 while (end < originalSize - start && end < revisedSize - start && original.get(originalSize - end - 1).equals(revised.get(revisedSize - end - 1))) {23 end++;24 }25 if (start > 0 || end > 0) {26 if (start > 0) {27 deltas.add(new Delta<T>(TYPE.EQUAL, original.subList(0, start)));28 }29 if (start < originalSize - end) {30 deltas.add(new Delta<T>(TYPE.CHANGE, original.subList(start, originalSize - end), revised.subList(start, revisedSize - end)));31 }32 if (start > 0 || start < originalSize - end) {33 deltas.add(new Delta<T>(TYPE.EQUAL, original.subList(originalSize - end, originalSize)));34 }35 } else {36 deltas.add(new Delta<T>(TYPE.CHANGE, original, revised));37 }38 return deltas;39 }40}

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Delta

Using AI Code Generation

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1import java.io.File;2import java.io.IOException;3import java.util.List;4import org.assertj.core.util.diff.Delta;5import org.assertj.core.util.diff.DiffUtils;6import org.assertj.core.util.diff.Patch;7public class DeltaExample {8 public static void main(String[] args) throws IOException {9 List<String> original = FileUtils.readLines(new File("C:\\Users\\gupta\\Desktop\\1.txt"));10 List<String> revised = FileUtils.readLines(new File("C:\\Users\\gupta\\Desktop\\2.txt"));11 Patch patch = DiffUtils.diff(original, revised);12 for (Delta delta : patch.getDeltas()) {13 System.out.println(delta);14 }15 }16}

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Delta

Using AI Code Generation

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1package org.assertj.core.util.diff;2import java.util.ArrayList;3import java.util.List;4import org.junit.Test;5public class DeltaTest {6public void testDelta() {7List<String> original = new ArrayList<String>();8original.add("a");9original.add("b");10original.add("c");11original.add("d");12original.add("e");13List<String> revised = new ArrayList<String>();14revised.add("a");15revised.add("c");16revised.add("b");17revised.add("f");18revised.add("g");19Patch patch = DiffUtils.diff(original, revised);20List<Delta> deltas = patch.getDeltas();21for (Delta delta : deltas) {22System.out.println(delta);23}24}25}26package org.assertj.core.util.diff;27import java.util.ArrayList;28import java.util.List;29import org.junit.Test;30public class DiffRowGeneratorTest {31public void testDiffRowGenerator() {32List<String> original = new ArrayList<String>();33original.add("a");34original.add("b");35original.add("c");36original.add("d");37original.add("e");38List<String> revised = new ArrayList<String>();39revised.add("a");40revised.add("c");41revised.add("b");42revised.add("f");43revised.add("g");44Patch patch = DiffUtils.diff(original, revised);45DiffRowGenerator generator = new DiffRowGenerator.Builder().showInlineDiffs(true).inlineDiffByWord(true).build();46List<DiffRow> rows = generator.generateDiffRows(original, revised, patch);47for (DiffRow row : rows) {48System.out.println(row);49}50}51}

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Delta

Using AI Code Generation

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1import java.util.List;2import org.assertj.core.util.diff.Delta;3import org.assertj.core.util.diff.DiffUtils;4public class 1 {5 public static void main(String[] args) {6 String original = "This is a test";7 String revised = "This is a test too";8 List<Delta> deltas = DiffUtils.diff(original, revised).getDeltas();9 for (Delta delta : deltas) {10 System.out.println(delta);11 }12 }13}

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Delta

Using AI Code Generation

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1package com.mycompany.app;2import java.io.File;3import java.io.IOException;4import java.util.List;5import org.assertj.core.util.diff.Delta;6import org.assertj.core.util.diff.DiffUtils;7import org.assertj.core.util.diff.Patch;8public class App {9 public static void main(String[] args) {10 File original = new File("original.txt");11 File revised = new File("revised.txt");12 List<String> originalLines = null;13 List<String> revisedLines = null;14 try {15 originalLines = FileUtils.readLines(original);16 revisedLines = FileUtils.readLines(revised);17 } catch (IOException e) {18 e.printStackTrace();19 }20 Patch<String> patch = DiffUtils.diff(originalLines, revisedLines);21 for (Delta<String> delta : patch.getDeltas()) {22 System.out.println(delta);23 }24 }25}26package com.mycompany.app;27import java.io.File;28import java.io.IOException;29import java.util.List;30import org.apache.commons.io.FileUtils;31import org.apache.commons.io.LineIterator;32public class App {33 public static void main(String[] args) {34 File original = new File("original.txt");35 File revised = new File("revised.txt");36 List<String> originalLines = null;37 List<String> revisedLines = null;38 try {39 originalLines = FileUtils.readLines(original);40 revisedLines = FileUtils.readLines(revised);41 } catch (IOException e) {42 e.printStackTrace();43 }44 LineIterator originalIterator = FileUtils.lineIterator(original);45 LineIterator revisedIterator = FileUtils.lineIterator(revised);46 while (originalIterator.hasNext() || revisedIterator.hasNext()) {47 String originalLine = originalIterator.nextLine();48 String revisedLine = revisedIterator.nextLine();49 if (!originalLine.equals(revisedLine)) {50 System.out.println(originalLine + " -> " + revisedLine);51 }52 }53 }54}

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Delta

Using AI Code Generation

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1import java.io.*;2import java.util.*;3import org.assertj.core.util.diff.*;4public class 1 {5 public static void main(String[] args) throws IOException {6 String file1 = "file1.txt";7 String file2 = "file2.txt";8 List<String> original = fileToLines(file1);9 List<String> revised = fileToLines(file2);10 Patch patch = DiffUtils.diff(original, revised);11 for (Delta delta : patch.getDeltas()) {12 System.out.println(delta);13 }14 }15 public static List<String> fileToLines(String filename) throws IOException {16 List<String> lines = new ArrayList<String>();17 String line = "";18 BufferedReader in = new BufferedReader(new FileReader(filename));19 while ((line = in.readLine()) != null) {20 lines.add(line);21 }22 return lines;23 }24}

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