org.bardframework.commons.utils.AssertionUtils Maven / Gradle / Ivy
package org.bardframework.commons.utils;
import lombok.experimental.UtilityClass;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.collections4.MapUtils;
import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.StringUtils;
import java.util.Collection;
import java.util.Map;
import java.util.function.Supplier;
/**
* Created by vahid ([email protected]) on 10/30/17.
*/
@UtilityClass
public class AssertionUtils {
public static void ge(long greater, long smaller, String message) {
if (greater < smaller) {
throw new IllegalArgumentException(message);
}
}
public static void ge(long greater, long smaller) {
ge(greater, smaller, "[Assertion failed] - first argument '" + greater + "' must greater than or equal with second argument '" + smaller + "'");
}
public static void gt(long greater, long smaller, String message) {
if (greater <= smaller) {
throw new IllegalArgumentException(message);
}
}
public static void gt(long greater, long smaller) {
gt(greater, smaller, "[Assertion failed] - first argument '" + greater + "' must greater than second argument '" + smaller + "'");
}
public static void assertEquals(byte[] file1, byte[] file2) {
if (null == file1 ^ null == file2) {
throw new IllegalArgumentException("files aren't match");
}
//TODO complete assertion
}
/**
* Assert a boolean expression, throwing an {@code IllegalStateException}
* if the expression evaluates to {@code false}.
* Call {@link #isTrue} if you wish to throw an {@code IllegalArgumentException}
* on an assertion failure.
*
Assert.state(id == null, "The id property must not already be initialized");
*
* @param expression a boolean expression
* @param message the exception message to use if the assertion fails
* @throws IllegalStateException if {@code expression} is {@code false}
*/
public static void state(boolean expression, String message) {
if (!expression) {
throw new IllegalStateException(message);
}
}
/**
* Assert a boolean expression, throwing an {@code IllegalStateException}
* if the expression evaluates to {@code false}.
* Call {@link #isTrue} if you wish to throw an {@code IllegalArgumentException}
* on an assertion failure.
*
* Assert.state(id == null,
* () -> "ID for " + entity.getName() + " must not already be initialized");
*
*
* @param expression a boolean expression
* @param messageSupplier a supplier for the exception message to use if the
* assertion fails
* @throws IllegalStateException if {@code expression} is {@code false}
*/
public static void state(boolean expression, Supplier messageSupplier) {
if (!expression) {
throw new IllegalStateException(nullSafeGet(messageSupplier));
}
}
/**
* Assert a boolean expression, throwing an {@code IllegalArgumentException}
* if the expression evaluates to {@code false}.
* Assert.isTrue(i > 0, "The value must be greater than zero");
*
* @param expression a boolean expression
* @param message the exception message to use if the assertion fails
* @throws IllegalArgumentException if {@code expression} is {@code false}
*/
public static void isTrue(boolean expression, String message) {
if (!expression) {
throw new IllegalArgumentException(message);
}
}
/**
* Assert a boolean expression, throwing an {@code IllegalArgumentException}
* if the expression evaluates to {@code false}.
*
* Assert.isTrue(i > 0, () -> "The value '" + i + "' must be greater than zero");
*
*
* @param expression a boolean expression
* @param messageSupplier a supplier for the exception message to use if the
* assertion fails
* @throws IllegalArgumentException if {@code expression} is {@code false}
*/
public static void isTrue(boolean expression, Supplier messageSupplier) {
if (!expression) {
throw new IllegalArgumentException(nullSafeGet(messageSupplier));
}
}
/**
* Assert that an object is {@code null}.
* Assert.isNull(value, "The value must be null");
*
* @param object the object to check
* @param message the exception message to use if the assertion fails
* @throws IllegalArgumentException if the object is not {@code null}
*/
public static void isNull(Object object, String message) {
if (object != null) {
throw new IllegalArgumentException(message);
}
}
/**
* Assert that an object is {@code null}.
*
* Assert.isNull(value, () -> "The value '" + value + "' must be null");
*
*
* @param object the object to check
* @param messageSupplier a supplier for the exception message to use if the
* assertion fails
* @throws IllegalArgumentException if the object is not {@code null}
*/
public static void isNull(Object object, Supplier messageSupplier) {
if (object != null) {
throw new IllegalArgumentException(nullSafeGet(messageSupplier));
}
}
/**
* Assert that an object is not {@code null}.
* Assert.notNull(clazz, "The class must not be null");
*
* @param object the object to check
* @param message the exception message to use if the assertion fails
* @throws IllegalArgumentException if the object is {@code null}
*/
public static void notNull(Object object, String message) {
if (object == null) {
throw new IllegalArgumentException(message);
}
}
/**
* Assert that an object is not {@code null}.
*
* Assert.notNull(clazz, () -> "The class '" + clazz.getName() + "' must not be null");
*
*
* @param object the object to check
* @param messageSupplier a supplier for the exception message to use if the
* assertion fails
* @throws IllegalArgumentException if the object is {@code null}
*/
public static void notNull(Object object, Supplier messageSupplier) {
if (object == null) {
throw new IllegalArgumentException(nullSafeGet(messageSupplier));
}
}
/**
* Assert that the given String is not empty; that is,
* it must not be {@code null} and not the empty String.
* Assert.isNotBlank(name, "Name must not be empty");
*
* @param text the String to check
* @param message the exception message to use if the assertion fails
* @throws IllegalArgumentException if the text is empty
*/
public static void isNotBlank(String text, String message) {
if (!StringUtils.isNotBlank(text)) {
throw new IllegalArgumentException(message);
}
}
/**
* Assert that the given String is not empty; that is,
* it must not be {@code null} and not the empty String.
*
* Assert.isNotBlank(name, () -> "Name for account '" + account.getId() + "' must not be empty");
*
*
* @param text the String to check
* @param messageSupplier a supplier for the exception message to use if the
* assertion fails
* @throws IllegalArgumentException if the text is empty
*/
public static void isNotBlank(String text, Supplier messageSupplier) {
if (!StringUtils.isNotBlank(text)) {
throw new IllegalArgumentException(nullSafeGet(messageSupplier));
}
}
/**
* Assert that the given String contains valid text content; that is, it must not
* be {@code null} and must contain at least one non-whitespace character.
* Assert.hasText(name, "'name' must not be empty");
*
* @param text the String to check
* @param message the exception message to use if the assertion fails
* @throws IllegalArgumentException if the text does not contain valid text content
*/
public static void hasText(String text, String message) {
if (!StringUtils.isNotBlank(text)) {
throw new IllegalArgumentException(message);
}
}
/**
* Assert that the given String contains valid text content; that is, it must not
* be {@code null} and must contain at least one non-whitespace character.
*
* Assert.hasText(name, () -> "Name for account '" + account.getId() + "' must not be empty");
*
*
* @param text the String to check
* @param messageSupplier a supplier for the exception message to use if the
* assertion fails
* @throws IllegalArgumentException if the text does not contain valid text content
*/
public static void hasText(String text, Supplier messageSupplier) {
if (!StringUtils.isNotBlank(text)) {
throw new IllegalArgumentException(nullSafeGet(messageSupplier));
}
}
/**
* Assert that the given text does not contain the given substring.
* Assert.doesNotContain(name, "rod", "Name must not contain 'rod'");
*
* @param textToSearch the text to search
* @param substring the substring to find within the text
* @param message the exception message to use if the assertion fails
* @throws IllegalArgumentException if the text contains the substring
*/
public static void doesNotContain(String textToSearch, String substring, String message) {
if (StringUtils.isNotBlank(textToSearch) && StringUtils.isNotBlank(substring) &&
textToSearch.contains(substring)) {
throw new IllegalArgumentException(message);
}
}
/**
* Assert that the given text does not contain the given substring.
*
* Assert.doesNotContain(name, forbidden, () -> "Name must not contain '" + forbidden + "'");
*
*
* @param textToSearch the text to search
* @param substring the substring to find within the text
* @param messageSupplier a supplier for the exception message to use if the
* assertion fails
* @throws IllegalArgumentException if the text contains the substring
*/
public static void doesNotContain(String textToSearch, String substring, Supplier messageSupplier) {
if (StringUtils.isNotBlank(textToSearch) && StringUtils.isNotBlank(substring) &&
textToSearch.contains(substring)) {
throw new IllegalArgumentException(nullSafeGet(messageSupplier));
}
}
/**
* Assert that an array contains elements; that is, it must not be
* {@code null} and must contain at least one element.
* Assert.notEmpty(array, "The array must contain elements");
*
* @param array the array to check
* @param message the exception message to use if the assertion fails
* @throws IllegalArgumentException if the object array is {@code null} or contains no elements
*/
public static void notEmpty(Object[] array, String message) {
if (ArrayUtils.isEmpty(array)) {
throw new IllegalArgumentException(message);
}
}
/**
* Assert that an array contains elements; that is, it must not be
* {@code null} and must contain at least one element.
*
* Assert.notEmpty(array, () -> "The " + arrayType + " array must contain elements");
*
*
* @param array the array to check
* @param messageSupplier a supplier for the exception message to use if the
* assertion fails
* @throws IllegalArgumentException if the object array is {@code null} or contains no elements
*/
public static void notEmpty(Object[] array, Supplier messageSupplier) {
if (ArrayUtils.isEmpty(array)) {
throw new IllegalArgumentException(nullSafeGet(messageSupplier));
}
}
/**
* Assert that an array contains no {@code null} elements.
* Note: Does not complain if the array is empty!
*
Assert.noNullElements(array, "The array must contain non-null elements");
*
* @param array the array to check
* @param message the exception message to use if the assertion fails
* @throws IllegalArgumentException if the object array contains a {@code null} element
*/
public static void noNullElements(Object[] array, String message) {
if (array != null) {
for (Object element : array) {
if (element == null) {
throw new IllegalArgumentException(message);
}
}
}
}
/**
* Assert that an array contains no {@code null} elements.
* Note: Does not complain if the array is empty!
*
* Assert.noNullElements(array, () -> "The " + arrayType + " array must contain non-null elements");
*
*
* @param array the array to check
* @param messageSupplier a supplier for the exception message to use if the
* assertion fails
* @throws IllegalArgumentException if the object array contains a {@code null} element
*/
public static void noNullElements(Object[] array, Supplier messageSupplier) {
if (array != null) {
for (Object element : array) {
if (element == null) {
throw new IllegalArgumentException(nullSafeGet(messageSupplier));
}
}
}
}
/**
* Assert that a collection contains elements; that is, it must not be
* {@code null} and must contain at least one element.
* Assert.notEmpty(collection, "Collection must contain elements");
*
* @param collection the collection to check
* @param message the exception message to use if the assertion fails
* @throws IllegalArgumentException if the collection is {@code null} or
* contains no elements
*/
public static void notEmpty(Collection collection, String message) {
if (CollectionUtils.isEmpty(collection)) {
throw new IllegalArgumentException(message);
}
}
/**
* Assert that a collection contains elements; that is, it must not be
* {@code null} and must contain at least one element.
*
* Assert.notEmpty(collection, () -> "The " + collectionType + " collection must contain elements");
*
*
* @param collection the collection to check
* @param messageSupplier a supplier for the exception message to use if the
* assertion fails
* @throws IllegalArgumentException if the collection is {@code null} or contains no elements
*/
public static void notEmpty(Collection collection, Supplier messageSupplier) {
if (CollectionUtils.isEmpty(collection)) {
throw new IllegalArgumentException(nullSafeGet(messageSupplier));
}
}
/**
* Assert that a collection contains no {@code null} elements.
* Note: Does not complain if the collection is empty!
*
Assert.noNullElements(collection, "Collection must contain non-null elements");
*
* @param collection the collection to check
* @param message the exception message to use if the assertion fails
* @throws IllegalArgumentException if the collection contains a {@code null} element
*/
public static void noNullElements(Collection collection, String message) {
if (collection != null) {
for (Object element : collection) {
if (element == null) {
throw new IllegalArgumentException(message);
}
}
}
}
/**
* Assert that a collection contains no {@code null} elements.
* Note: Does not complain if the collection is empty!
*
* Assert.noNullElements(collection, () -> "Collection " + collectionName + " must contain non-null elements");
*
*
* @param collection the collection to check
* @param messageSupplier a supplier for the exception message to use if the
* assertion fails
* @throws IllegalArgumentException if the collection contains a {@code null} element
*/
public static void noNullElements(Collection collection, Supplier messageSupplier) {
if (collection != null) {
for (Object element : collection) {
if (element == null) {
throw new IllegalArgumentException(nullSafeGet(messageSupplier));
}
}
}
}
/**
* Assert that a Map contains entries; that is, it must not be {@code null}
* and must contain at least one entry.
* Assert.notEmpty(map, "Map must contain entries");
*
* @param map the map to check
* @param message the exception message to use if the assertion fails
* @throws IllegalArgumentException if the map is {@code null} or contains no entries
*/
public static void notEmpty(Map map, String message) {
if (MapUtils.isEmpty(map)) {
throw new IllegalArgumentException(message);
}
}
/**
* Assert that a Map contains entries; that is, it must not be {@code null}
* and must contain at least one entry.
*
* Assert.notEmpty(map, () -> "The " + mapType + " map must contain entries");
*
*
* @param map the map to check
* @param messageSupplier a supplier for the exception message to use if the
* assertion fails
* @throws IllegalArgumentException if the map is {@code null} or contains no entries
*/
public static void notEmpty(Map map, Supplier messageSupplier) {
if (MapUtils.isEmpty(map)) {
throw new IllegalArgumentException(nullSafeGet(messageSupplier));
}
}
/**
* Assert that the provided object is an instance of the provided class.
* Assert.instanceOf(Foo.class, foo, "Foo expected");
*
* @param type the type to check against
* @param obj the object to check
* @param message a message which will be prepended to provide further context.
* If it is empty or ends in ":" or ";" or "," or ".", a full exception message
* will be appended. If it ends in a space, the name of the offending object's
* type will be appended. In any other case, a ":" with a space and the name
* of the offending object's type will be appended.
* @throws IllegalArgumentException if the object is not an instance of type
*/
public static void isInstanceOf(Class type, Object obj, String message) {
notNull(type, "Type to check against must not be null");
if (!type.isInstance(obj)) {
instanceCheckFailed(type, obj, message);
}
}
/**
* Assert that the provided object is an instance of the provided class.
*
* Assert.instanceOf(Foo.class, foo, () -> "Processing " + Foo.class.getSimpleName() + ":");
*
*
* @param type the type to check against
* @param obj the object to check
* @param messageSupplier a supplier for the exception message to use if the
* assertion fails. See {@link #isInstanceOf(Class, Object, String)} for details.
* @throws IllegalArgumentException if the object is not an instance of type
*/
public static void isInstanceOf(Class type, Object obj, Supplier messageSupplier) {
notNull(type, "Type to check against must not be null");
if (!type.isInstance(obj)) {
instanceCheckFailed(type, obj, nullSafeGet(messageSupplier));
}
}
/**
* Assert that the provided object is an instance of the provided class.
* Assert.instanceOf(Foo.class, foo);
*
* @param type the type to check against
* @param obj the object to check
* @throws IllegalArgumentException if the object is not an instance of type
*/
public static void isInstanceOf(Class type, Object obj) {
isInstanceOf(type, obj, "");
}
/**
* Assert that {@code superType.isAssignableFrom(subType)} is {@code true}.
* Assert.isAssignable(Number.class, myClass, "Number expected");
*
* @param superType the super type to check against
* @param subType the sub type to check
* @param message a message which will be prepended to provide further context.
* If it is empty or ends in ":" or ";" or "," or ".", a full exception message
* will be appended. If it ends in a space, the name of the offending sub type
* will be appended. In any other case, a ":" with a space and the name of the
* offending sub type will be appended.
* @throws IllegalArgumentException if the classes are not assignable
*/
public static void isAssignable(Class superType, Class subType, String message) {
notNull(superType, "Super type to check against must not be null");
if (subType == null || !superType.isAssignableFrom(subType)) {
assignableCheckFailed(superType, subType, message);
}
}
/**
* Assert that {@code superType.isAssignableFrom(subType)} is {@code true}.
*
* Assert.isAssignable(Number.class, myClass, () -> "Processing " + myAttributeName + ":");
*
*
* @param superType the super type to check against
* @param subType the sub type to check
* @param messageSupplier a supplier for the exception message to use if the
* assertion fails. See {@link #isAssignable(Class, Class, String)} for details.
* @throws IllegalArgumentException if the classes are not assignable
*/
public static void isAssignable(Class superType, Class subType, Supplier messageSupplier) {
notNull(superType, "Super type to check against must not be null");
if (subType == null || !superType.isAssignableFrom(subType)) {
assignableCheckFailed(superType, subType, nullSafeGet(messageSupplier));
}
}
/**
* Assert that {@code superType.isAssignableFrom(subType)} is {@code true}.
* Assert.isAssignable(Number.class, myClass);
*
* @param superType the super type to check
* @param subType the sub type to check
* @throws IllegalArgumentException if the classes are not assignable
*/
public static void isAssignable(Class superType, Class subType) {
isAssignable(superType, subType, "");
}
private static void instanceCheckFailed(Class type, Object obj, String msg) {
String className = (obj != null ? obj.getClass().getName() : "null");
String result = "";
boolean defaultMessage = true;
if (StringUtils.isNotBlank(msg)) {
if (endsWithSeparator(msg)) {
result = msg + StringUtils.SPACE;
} else {
result = messageWithTypeName(msg, className);
defaultMessage = false;
}
}
if (defaultMessage) {
result = result + ("Object of class [" + className + "] must be an instance of " + type);
}
throw new IllegalArgumentException(result);
}
private static void assignableCheckFailed(Class superType, Class subType, String msg) {
String result = "";
boolean defaultMessage = true;
if (StringUtils.isNotBlank(msg)) {
if (endsWithSeparator(msg)) {
result = msg + StringUtils.SPACE;
} else {
result = messageWithTypeName(msg, subType);
defaultMessage = false;
}
}
if (defaultMessage) {
result = result + (subType + " is not assignable to " + superType);
}
throw new IllegalArgumentException(result);
}
private static boolean endsWithSeparator(String msg) {
return (msg.endsWith(":") || msg.endsWith(";") || msg.endsWith(",") || msg.endsWith("."));
}
private static String messageWithTypeName(String msg, Object typeName) {
return msg + (msg.endsWith(StringUtils.SPACE) ? StringUtils.EMPTY : ": ") + typeName;
}
private static String nullSafeGet(Supplier messageSupplier) {
return (messageSupplier != null ? messageSupplier.get() : null);
}
}