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How to use instance method of org.assertj.core.error.MessageFormatter class

Best Assertj code snippet using org.assertj.core.error.MessageFormatter.instance

Source:ShouldBeEqual.java

...40  private static final Class<?>[] MSG_ARG_TYPES = new Class<?>[] { String.class, String.class, String.class };41  protected final Object actual;42  protected final Object expected;43  @VisibleForTesting44  final MessageFormatter messageFormatter = MessageFormatter.instance();45  private final ComparisonStrategy comparisonStrategy;46  private Representation representation;47  @VisibleForTesting48  ConstructorInvoker constructorInvoker = new ConstructorInvoker();49  @VisibleForTesting50  DescriptionFormatter descriptionFormatter = DescriptionFormatter.instance();51  /**52   * Creates a new <code>{@link ShouldBeEqual}</code>.53   *54   * @param actual the actual value in the failed assertion.55   * @param expected the expected value in the failed assertion.56   * @return the created {@code AssertionErrorFactory}.57   */58  public static AssertionErrorFactory shouldBeEqual(Object actual, Object expected, Representation representation) {59	return new ShouldBeEqual(actual, expected, StandardComparisonStrategy.instance(), representation);60  }61  /**62   * Creates a new <code>{@link ShouldBeEqual}</code>.63   *64   * @param actual the actual value in the failed assertion.65   * @param expected the expected value in the failed assertion.66   * @param comparisonStrategy the {@link ComparisonStrategy} used to compare actual with expected.67   * @return the created {@code AssertionErrorFactory}.68   */69  public static AssertionErrorFactory shouldBeEqual(Object actual, Object expected,70	                                                ComparisonStrategy comparisonStrategy, Representation representation) {71	return new ShouldBeEqual(actual, expected, comparisonStrategy, representation);72  }73  @VisibleForTesting74  ShouldBeEqual(Object actual, Object expected, ComparisonStrategy comparisonStrategy, Representation representation) {75	this.actual = actual;76	this.expected = expected;77	this.comparisonStrategy = comparisonStrategy;78	this.representation = representation;79  }80  /**81   * Creates an <code>{@link AssertionError}</code> indicating that an assertion that verifies that two objects are82   * equal failed.<br>83   * The <code>{@link AssertionError}</code> message is built so that it differentiates {@link #actual} and84   * {@link #expected} description in case their string representation are the same (like 42 float and 42 double).85   * <p>86   * If JUnit 4 is in the classpath and the description is standard (no comparator was used and {@link #actual} and87   * {@link #expected} string representation were differents), this method will instead create a88   * org.junit.ComparisonFailure that highlights the difference(s) between the expected and actual objects.89   * </p>90   * {@link AssertionError} stack trace won't show AssertJ related elements if {@link Failures} is configured to filter91   * them (see {@link Failures#setRemoveAssertJRelatedElementsFromStackTrace(boolean)}).92   *93   * @param description the description of the failed assertion.94   * @param representation95   * @return the created {@code AssertionError}.96   */97  @Override98  public AssertionError newAssertionError(Description description, Representation representation) {99	if (actualAndExpectedHaveSameStringRepresentation()) {100	  // Example : actual = 42f and expected = 42d gives actual : "42" and expected : "42" and101	  // JUnit 4 manages this case even worst, it will output something like :102	  // "java.lang.String expected:java.lang.String<42.0> but was: java.lang.String<42.0>"103	  // which does not solve the problem and makes things even more confusing since we lost the fact that 42 was a104	  // float or a double, it is then better to built our own description, with the drawback of not using a105	  // ComparisonFailure (which looks nice in eclipse)106	  return Failures.instance().failure(defaultDetailedErrorMessage(description, representation));107	}108	// only use JUnit error message if comparison strategy was standard, otherwise we need to mention it in the109	// assertion error message to make it clear to the user it was used.110	if (comparisonStrategy.isStandard()) {111	  // comparison strategy is standard -> try to build a JUnit ComparisonFailure that is nicely dispayed in IDE.112	  AssertionError error = comparisonFailure(description);113	  // error ==null means that JUnit was not in the classpath114	  if (error != null) return error;115	}116	// No JUnit in the classpath => fall back to default error message117	return Failures.instance().failure(defaultErrorMessage(description, representation));118  }119  private boolean actualAndExpectedHaveSameStringRepresentation() {120	return areEqual(representation.toStringOf(actual), representation.toStringOf(expected));121  }122  /**123   * Builds and returns an error message from description using {@link #expected} and {@link #actual} basic124   * representation.125   *126   * @param description the {@link Description} used to build the returned error message127   * @param representation the {@link org.assertj.core.presentation.Representation} used to build String representation128   *          of object129   * @return the error message from description using {@link #expected} and {@link #actual} basic representation.130   */131  private String defaultErrorMessage(Description description, Representation representation) {132	return comparisonStrategy.isStandard() ?133	    messageFormatter.format(description, representation, EXPECTED_BUT_WAS_MESSAGE, actual, expected) :134	    messageFormatter.format(description, representation, EXPECTED_BUT_WAS_MESSAGE_USING_COMPARATOR,135	                            actual, expected, comparisonStrategy);136  }137  /**138   * Builds and returns an error message from description using {@link #detailedExpected()} and139   * {@link #detailedActual()} detailed representation.140   *141   * @param description the {@link Description} used to build the returned error message142   * @param representation the {@link org.assertj.core.presentation.Representation} used to build String representation143   *          of object144   * @return the error message from description using {@link #detailedExpected()} and {@link #detailedActual()}145   *         <b>detailed</b> representation.146   */147  private String defaultDetailedErrorMessage(Description description, Representation representation) {148	if (comparisonStrategy instanceof ComparatorBasedComparisonStrategy)149	  return messageFormatter.format(description, representation, EXPECTED_BUT_WAS_MESSAGE_USING_COMPARATOR,150	                                 detailedActual(),151	                                 detailedExpected(), comparisonStrategy);152	return messageFormatter.format(description, representation, EXPECTED_BUT_WAS_MESSAGE, detailedActual(),153	                               detailedExpected());154  }155  private AssertionError comparisonFailure(Description description) {156	try {157	  AssertionError comparisonFailure = newComparisonFailure(descriptionFormatter.format(description).trim());158	  Failures.instance().removeAssertJRelatedElementsFromStackTraceIfNeeded(comparisonFailure);159	  return comparisonFailure;160	} catch (Throwable e) {161	  return null;162	}163  }164  private AssertionError newComparisonFailure(String description) throws Exception {165	Object o = constructorInvoker.newInstance("org.junit.ComparisonFailure", MSG_ARG_TYPES, msgArgs(description));166	if (o instanceof AssertionError) return (AssertionError) o;167	return null;168  }169  private Object[] msgArgs(String description) {170	return array(description, representation.toStringOf(expected), representation.toStringOf(actual));171  }172  private String detailedToStringOf(Object obj) {173	return representation.toStringOf(obj) + " (" + obj.getClass().getSimpleName() + "@" + toHexString(obj.hashCode())174	       + ")";175  }176  private String detailedActual() {177	return detailedToStringOf(actual);178  }179  private String detailedExpected() {180	return detailedToStringOf(expected);...

Source:MessageFormatter.java

...23 * @author Alex Ruiz24 */25public class MessageFormatter {26  private static final MessageFormatter INSTANCE = new MessageFormatter();27  public static MessageFormatter instance() {28    return INSTANCE;29  }30  @VisibleForTesting31  DescriptionFormatter descriptionFormatter = DescriptionFormatter.instance();32  @VisibleForTesting33  MessageFormatter() {34  }35  /**36   * Interprets a printf-style format {@code String} for failed assertion messages. It is similar to37   * <code>{@link String#format(String, Object...)}</code>, except for:38   * <ol>39   * <li>the value of the given <code>{@link Description}</code> is used as the first argument referenced in the format40   * string</li>41   * <li>each of the arguments in the given array is converted to a {@code String} by invoking42   * <code>{@link org.assertj.core.presentation.Representation#toStringOf(Object)}</code>.43   * </ol>44   * 45   * @param d the description of the failed assertion, may be {@code null}.46   * @param format the format string.47   * @param args arguments referenced by the format specifiers in the format string.48   * @throws NullPointerException if the format string is {@code null}.49   * @return A formatted {@code String}.50   */51  public String format(Description d, Representation p, String format, Object... args) {52    checkNotNull(format);53    checkNotNull(args);54    return descriptionFormatter.format(d) + formatIfArgs(format, format(p, args));55  }56  private Object[] format(Representation p, Object[] args) {57    int argCount = args.length;58    String[] formatted = new String[argCount];59    for (int i = 0; i < argCount; i++) {60      formatted[i] = asText(p, args[i]);61    }62    return formatted;63  }64  private String asText(Representation p, Object o) {65    if (o instanceof AbstractComparisonStrategy) {66      return ((AbstractComparisonStrategy) o).asText();67    }68    return p.toStringOf(o);69  }70}...

Source:AbstractHelperAsserts.java

...13        this.info = info;14    }15    // TODO: it's copy from assertj, should find better way.16    protected void failWithMessage(String errorMessage, Object... arguments) {17        AssertionError failureWithOverriddenErrorMessage = Failures.instance().failureIfErrorMessageIsOverridden(info);18        if (failureWithOverriddenErrorMessage != null) throw failureWithOverriddenErrorMessage;19        String description = MessageFormatter.instance().format(info.description(), info.representation(), "");20        throw new AssertionError(description + String.format(errorMessage, arguments));21    }22}...

instance

Using AI Code Generation

1import org.assertj.core.error.MessageFormatter;2public class 1 {3    public static void main(String[] args) {4        String message = MessageFormatter.instance().format("Hello %s!", "World");5        System.out.println(message);6    }7}8import org.assertj.core.error.MessageFormatter;9public class 2 {10    public static void main(String[] args) {11        String message = MessageFormatter.format("Hello %s!", "World");12        System.out.println(message);13    }14}

instance

Using AI Code Generation

1package org.assertj.core.error;2public class MessageFormatter {3public static String format(String message, Object... arguments) {4return org.assertj.core.error.MessageFormatter.format(message, arguments);5}6}7package org.assertj.core.error;8public class MessageFormatter {9public static String format(String message, Object... arguments) {10return org.assertj.core.error.MessageFormatter.format(message, arguments);11}12}13package org.assertj.core.error;14public class MessageFormatter {15public static String format(String message, Object... arguments) {16return org.assertj.core.error.MessageFormatter.format(message, arguments);17}18}19package org.assertj.core.error;20public class MessageFormatter {21public static String format(String message, Object... arguments) {22return org.assertj.core.error.MessageFormatter.format(message, arguments);23}24}25package org.assertj.core.error;26public class MessageFormatter {27public static String format(String message, Object... arguments) {28return org.assertj.core.error.MessageFormatter.format(message, arguments);29}30}31package org.assertj.core.error;32public class MessageFormatter {33public static String format(String message, Object... arguments) {34return org.assertj.core.error.MessageFormatter.format(message, arguments);35}36}37package org.assertj.core.error;38public class MessageFormatter {39public static String format(String message, Object... arguments) {40return org.assertj.core.error.MessageFormatter.format(message, arguments);41}42}43package org.assertj.core.error;44public class MessageFormatter {45public static String format(String message, Object... arguments) {46return org.assertj.core.error.MessageFormatter.format(message, arguments);47}48}49package org.assertj.core.error;50public class MessageFormatter {51public static String format(String message, Object... arguments) {

instance

Using AI Code Generation

1import org.assertj.core.error.MessageFormatter;2public class 1 {3    public static void main(String[] args) {4        MessageFormatter mf = new MessageFormatter();5        String result = mf.format("The %s is %s", "sky", "blue");6        System.out.println(result);7    }8}9import org.assertj.core.error.MessageFormatter;10public class 2 {11    public static void main(String[] args) {12        String result = MessageFormatter.format("The %s is %s", "sky", "blue");13        System.out.println(result);14    }15}

instance

Using AI Code Generation

1package org.assertj.core.error;2import org.assertj.core.internal.TestDescription;3import org.junit.Test;4public class MessageFormatter_instanceMethodTest {5    public void test() {6        MessageFormatter formatter = new MessageFormatter();7        String formatted = formatter.format(new TestDescription("Test"), "Hello %s", "World");8        System.out.println(formatted);9    }10}11package org.assertj.core.error;12import org.assertj.core.internal.TestDescription;13import org.junit.Test;14public class MessageFormatter_staticMethodTest {15    public void test() {16        String formatted = MessageFormatter.format(new TestDescription("Test"), "Hello %s", "World");17        System.out.println(formatted);18    }19}20Latest Posts Latest posts by Praveen Kumar see all) Java 8 Optional orElse() method - April 22, 201821Java 8 Optional orElseThrow() method - April 22, 201822Java 8 Optional orElseGet() method - April 22, 201823Related posts: How to use AssertJ assertThatThrownBy() method? How to use AssertJ assertThat() method? How to use AssertJ hasMessage() method? How to use AssertJ hasMessageContaining() method? How to use AssertJ hasMessageMatching() method? How to use AssertJ hasMessageStartingWith() method? How to use AssertJ hasMessageEndingWith() method? How to use AssertJ hasMessageContainingAll() method? How to use AssertJ hasMessageContainingAny() method? How to use AssertJ hasMessageContainingOnlyOnce() method? How to use AssertJ hasMessageContainingSequence() method? How to use AssertJ hasMessageNotContainingSequence() method? How to use AssertJ hasMessageNotContaining() method? How to use AssertJ hasMessageNotContainingAll() method? How to use AssertJ hasMessageNotContainingAny() method? How to use AssertJ hasMessageNotContainingOnlyOnce() method? How to use AssertJ

instance

Using AI Code Generation

1package org.assertj.core.error;2import org.assertj.core.error.MessageFormatter;3public class Test {4    public static void main(String[] args) {5        MessageFormatter messageFormatter = new MessageFormatter();6        messageFormatter.format("Test", "test");7    }8}9Exception in thread "main" java.lang.IllegalAccessError: tried to access method org.assertj.core.error.MessageFormatter.format(Ljava/lang/String;Ljava/lang/Object;)Ljava/lang/String; from class Test10	at Test.main(Test.java:6)

instance

Using AI Code Generation

1package org.assertj.core.error;2import org.assertj.core.api.Assertions;3import org.assertj.core.error.MessageFormatter;4public class Main {5    public static void main(String[] args) {6        String message = MessageFormatter.instance().format("The %s was not found", "file");7        Assertions.assertThat(message).isEqualTo("The file was not found");8    }9}10package org.assertj.core.error;11import org.assertj.core.api.Assertions;12import org.assertj.core.error.MessageFormatter;13public class Main {14    public static void main(String[] args) {15        String message = MessageFormatter.format("The %s was not found", "file");16        Assertions.assertThat(message).isEqualTo("The file was not found");17    }18}

instance

Using AI Code Generation

1import org.assertj.core.error.MessageFormatter;2public class AssertJExample {3    public static void main(String[] args) {4        String message = MessageFormatter.instance().format("Hello %s!", "World");5        System.out.println(message);6    }7}

instance

Using AI Code Generation

1import org.assertj.core.error.MessageFormatter;2import org.assertj.core.util.Strings;3import org.assertj.core.api.Assertions;4public class MessageFormatterTest {5    public static void main(String[] args) {6        String format = "format";7        String[] arguments = {"arg1", "arg2"};8        String formatted = MessageFormatter.format(format, arguments);9        Assertions.assertThat(formatted).isEqualTo("format");10    }11}

instance

Using AI Code Generation

1import org.assertj.core.error.MessageFormatter;2import org.assertj.core.util.Throwables;3public class 1 {4    public static void main(String[] args) {5        try {6            throw new Exception("This is a test");7        } catch (Exception e) {8            System.out.println(MessageFormatter.instance().format("Exception occurred: %s", Throwables.getStackTrace(e)));9        }10    }11}12    at 1.main(1.java:8)13import org.assertj.core.error.MessageFormatter;14import org.assertj.core.util.Throwables;15public class 2 {16    public static void main(String[] args) {17        try {18            throw new Exception("This is a test");19        } catch (Exception e) {20            System.out.println(MessageFormatter.format("Exception occurred: %s", Throwables.getStackTrace(e)));21        }22    }23}24    at 2.main(2.java:8)25import org.assertj.core.error.MessageFormatter;26import org.assertj.core.util.Throwables;27public class 3 {28    public static void main(String[] args) {29        try {30            throw new Exception("This is a test");31        } catch (Exception e) {32            System.out.println(MessageFormatter.format("Exception occurred: %s, %s", Throwables.getStackTrace(e), e.getMessage()));33        }34    }35}36    at 3.main(3.java:8), This is a test37import org.assertj.core.error.MessageFormatter;38import org.assertj.core.util.Throwables;39public class 4 {40    public static void main(String[] args) {41        try {42            throw new Exception("This is a test");43        } catch (Exception e) {44            System.out.println(MessageFormatter.format("Exception occurred: %s, %s, %s", Throwables.getStackTrace(e),

instance

Using AI Code Generation

1class A {2    public static void main(String[] args) {3        String str = MessageFormatter.instance().format("Value is %s", 8).getMessage();4        System.out.println(str);5    }6}7class B {8    public static void main(String[] args) {9        String str = MessageFormatter.format("Value is %s", 8).getMessage();10        System.out.println(str);11    }12}13Java String format() Method14Java String join() Method15Java String strip() Method16Java String stripLeading() Method17Java String stripTrailing() Method18Java String transform() Method19Java String translateEscapes() Method20Java String translateEscapes() Method21Java String isBlank() Method22Java String lines() Method23Java String repeat() Method24Java String stripIndent() Method25Java String stripTrailing() Method26Java String toCodePoints() Method27Java String transform() Method28Java String translateEscapes() Method29Java String trim() Method30Java String trimIndent() Method31Java String trimLeading() Method32Java String trimTrailing() Metho

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