How to use appendValueList method of org.hamcrest.BaseDescription class

Best junit code snippet using org.hamcrest.BaseDescription.appendValueList

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...47/​* 47 */​ append('<');48/​* 48 */​ append(descriptionOf(value));49/​* 49 */​ append("F>");50/​* 50 */​ } else if (value.getClass().isArray()) {51/​* 51 */​ appendValueList("[", ", ", "]", (Iterator<?>)new ArrayIterator(value));52/​* */​ } else {53/​* 53 */​ append('<');54/​* 54 */​ append(descriptionOf(value));55/​* 55 */​ append('>');56/​* */​ } 57/​* 57 */​ return this;58/​* */​ }59/​* */​ 60/​* */​ private String descriptionOf(Object value) {61/​* */​ try {62/​* 62 */​ return String.valueOf(value);63/​* */​ }64/​* 64 */​ catch (Exception e) {65/​* 65 */​ return value.getClass().getName() + "@" + Integer.toHexString(value.hashCode());66/​* */​ } 67/​* */​ }68/​* */​ 69/​* */​ 70/​* */​ public <T> Description appendValueList(String start, String separator, String end, T... values) {71/​* 71 */​ return appendValueList(start, separator, end, Arrays.asList((Object[])values));72/​* */​ }73/​* */​ 74/​* */​ 75/​* */​ public <T> Description appendValueList(String start, String separator, String end, Iterable<T> values) {76/​* 76 */​ return appendValueList(start, separator, end, values.iterator());77/​* */​ }78/​* */​ 79/​* */​ private <T> Description appendValueList(String start, String separator, String end, Iterator<T> values) {80/​* 80 */​ return appendList(start, separator, end, (Iterator<? extends SelfDescribing>)new SelfDescribingValueIterator(values));81/​* */​ }82/​* */​ 83/​* */​ 84/​* */​ public Description appendList(String start, String separator, String end, Iterable<? extends SelfDescribing> values) {85/​* 85 */​ return appendList(start, separator, end, values.iterator());86/​* */​ }87/​* */​ 88/​* */​ private Description appendList(String start, String separator, String end, Iterator<? extends SelfDescribing> i) {89/​* 89 */​ boolean separate = false;90/​* */​ 91/​* 91 */​ append(start);92/​* 92 */​ while (i.hasNext()) {93/​* 93 */​ if (separate) append(separator); ...

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appendValueList

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1import org.hamcrest.BaseDescription2import org.hamcrest.Description3def description = new BaseDescription() {4 public Description appendValueList(String start, String separator, String end, Object... values) {5 super.appendValueList(start, separator, end, values)6 }7}8description.appendValueList("(", ", ", ")", 1, 2, 3)9assert description.toString() == "(1, 2, 3)"10description = new BaseDescription() {11 public Description appendValueList(String start, String separator, String end, Iterable<?> values) {12 super.appendValueList(start, separator, end, values)13 }14}15description.appendValueList("(", ", ", ")", [1, 2, 3])16assert description.toString() == "(1, 2, 3)"17description = new BaseDescription() {18 public Description appendValueList(String start, String separator, String end, Object[] values, int from, int to) {19 super.appendValueList(start, separator, end, values, from, to)20 }21}22description.appendValueList("(", ", ", ")", [1, 2, 3], 1, 3)23assert description.toString() == "(2, 3)"24description = new BaseDescription() {25 public Description appendValueList(String start, String separator, String end, Iterable<?> values, int from, int to) {26 super.appendValueList(start, separator, end, values, from, to)27 }28}29description.appendValueList("(", ", ", ")", [1, 2, 3] as Iterable, 1, 3)30assert description.toString() == "(2, 3)"31description = new BaseDescription() {32 public Description appendValueList(String start, String separator, String end, Object[] values, int from, int to) {33 super.appendValueList(start, separator, end, values, from, to)34 }35}36description.appendValueList("(", ", ", ")", [1, 2, 3], 1, 2)37assert description.toString() == "(2)"38description = new BaseDescription() {39 public Description appendValueList(String start, String separator, String end, Iterable

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appendValueList

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1import org.hamcrest.BaseDescription2import org.hamcrest.Description3import org.hamcrest.StringDescription4def description = new BaseDescription() {5 void appendValueList(String start, String separator, String end, Object... values) {6 appendText(start)7 for (int i = 0; i < values.length; i++) {8 appendValue(values[i])9 if (i < values.length - 1) {10 appendText(separator)11 }12 }13 appendText(end)14 }15}16def stringDescription = new StringDescription()17stringDescription.appendDescriptionOf(description)18println stringDescription.toString()19def description = new BaseDescription() {20 void appendValueList(String start, String separator, String end, Object... values) {21 appendText(start)22 for (int i = 0; i < values.length; i++) {23 appendValue(values[i])24 if (i < values.length - 1) {25 appendText(separator)26 }27 }28 appendText(end)29 }30}31def stringDescription = new StringDescription()32stringDescription.appendDescriptionOf(description)33println stringDescription.toString()34def description = new BaseDescription() {35 void appendValueList(String start, String separator, String end, Object... values) {36 appendText(start)37 for (int i = 0; i < values.length; i++) {38 appendValue(values[i])39 if (i < values.length - 1) {40 appendText(separator)41 }42 }43 appendText(end)44 }45}46def stringDescription = new StringDescription()47stringDescription.appendDescriptionOf(description)48println stringDescription.toString()49def description = new BaseDescription() {50 void appendValueList(String start, String separator, String end, Object... values) {51 appendText(start)52 for (int i = 0; i < values.length; i++) {53 appendValue(values[i])54 if (i < values.length - 1) {55 appendText(separator)56 }57 }58 appendText(end)59 }60}61def stringDescription = new StringDescription()62stringDescription.appendDescriptionOf(description)63println stringDescription.toString()

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appendValueList

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1import static org.hamcrest.CoreMatchers.is2import static org.hamcrest.MatcherAssert.assertThat3import org.hamcrest.BaseDescription4import org.hamcrest.Description5import org.hamcrest.Matcher6import org.hamcrest.TypeSafeDiagnosingMatcher7class AppendValueList extends BaseDescription {8 Description appendValueList(String start, String separator, String end, Object... values) {9 return super.appendValueList(start, separator, end, values)10 }11}12class IsList extends TypeSafeDiagnosingMatcher<AppendValueList> {13 boolean matchesSafely(AppendValueList item, Description mismatchDescription) {14 item.appendValueList("[", ", ", "]", 1, 2, 3)15 assertThat item.toString(), is("[1, 2, 3]")16 }17 void describeTo(Description description) {18 description.appendText("a list of values")19 }20}21def "appendValueList"() {22 def description = new AppendValueList()23 description.appendValueList("[", ", ", "]", 1, 2, 3) == description24 description.toString() == "[1, 2, 3]"25}26def "appendValueList with matcher"() {27 new IsList() as Matcher28}

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appendValueList

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1import org.hamcrest.BaseDescription;2public class BaseDescriptionAppendValueList {3 public static void main(String[] args) {4 BaseDescription desc = new BaseDescription();5 desc.appendValueList("(", ")", ",", new String[]{"one", "two", "three"});6 System.out.println(desc.toString());7 }8}9public BaseDescription appendValueList(String start, String end, String separator, Object[] values)

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1import org.hamcrest.BaseDescription;2public class BaseDescriptionAppendValueList {3 public static void main(String[] args) {4 BaseDescription desc = new BaseDescription();5 desc.appendValueList("(", ")", ",", new String[]{"one", "two", "three"});6 System.out.println(desc.toString());7 }8}9public BaseDescription appendValueList(String start, String end, String separator, Object[] values)

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1import org.hamcrest.BaseDescription2import org.hamcrest.Description3import org.hamcrest.Matcher4import org.hamcrest.StringDescription5class AppendValueList extends BaseDescription {6 AppendValueList(List<Object> values) {7 }8 void appendValueList(String start, String separator, String end, Object... values) {9 append(start)10 for (int i = 0; i < values.length; i++) {11 appendValue(values[i])12 if (i < values.length - 1) {13 append(separator)14 }15 }16 append(end)17 }18}19class AppendValueListTest extends Specification {20 def "should append a list of values"() {21 Description description = new StringDescription()22 Matcher matcher = new Matcher() {23 boolean matches(Object item) {24 }25 void describeTo(Description description) {26 description.appendText("description")27 }28 }29 matcher.describeMismatch(values, new AppendValueList(values))30 description.toString() == "[1, 2, 3, 4]"31 }32}33AppendValueListTest > should append a list of values() PASSED

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1def description = new org.hamcrest.BaseDescription()2description.appendValueList('[', ', ', ']', values)3println description.toString()4def description = new org.hamcrest.BaseDescription()5description.appendValue(null)6println description.toString()7def description = new org.hamcrest.BaseDescription()8description.appendValue(1)9println description.toString()10def description = new org.hamcrest.BaseDescription()11description.appendValue(1.1)12println description.toString()13def description = new org.hamcrest.BaseDescription()14description.appendValue("value")15println description.toString()16def description = new org.hamcrest.BaseDescription()17description.appendValue(new Object())18println description.toString()19def description = new org.hamcrest.BaseDescription()20description.appendValue(new Object(), new org.hamcrest.StringDescription())21println description.toString()22def description = new org.hamcrest.BaseDescription()23description.appendValue(new Object(), new org.hamcrest.StringDescription())24println description.toString()25def description = new org.hamcrest.BaseDescription()26description.appendValue(new Object

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You should not need to test private methods.

  • A private method is specifically part of the implementation. You should not test the implemenation, but the functionality. If you test the functionality a class exposes, you can change the implementation while depending on the unit test.
  • If you feel the need to test a private method, this is a good sign that you should move the private method to another class and make the method public. By doing this, you get smaller classes and you can test the methods easily. If you do not want to expose this new class, you can make it package-private (the default access modifier).
https://stackoverflow.com/questions/3299405/how-should-i-test-private-methods-in-java

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