test.de.iip_ecosphere.platform.services.environment.metricsProvider.utils

Class TestUtils

java.lang.Object

test.de.iip_ecosphere.platform.services.environment.metricsProvider.utils.TestUtils

public class TestUtils
extends Object

Class to avoid repetition of code in testing environment.
This class extracts a JsonObject from a resource and has some timed methods.

Author:

Miguel Gomez

Field Summary

Fields

Modifier and Type	Field and Description
static String	DATA

Constructor Summary

Constructors

Constructor and Description
TestUtils()

Method Summary

Modifier and Type	Method and Description
static <T extends Throwable> T	assertThrows(Class<T> expectedThrowable, ThrowingRunnable runnable) Asserts that runnable throws an exception of type expectedThrowable when executed.
static <T extends Throwable> T	assertThrows(String message, Class<T> expectedThrowable, ThrowingRunnable runnable) Asserts that runnable throws an exception of type expectedThrowable when executed.
private static String	buildPrefix(String message) Builds a message prefix.
private static boolean	equalsRegardingNull(Object expected, Object actual) Returns whether expected and actual are considered equal regarding null.
(package private) static String	format(String message, Object expected, Object actual) Formats a message with given expected and actual value.
private static String	formatClass(Class<?> value) Formats the given class name.
private static String	formatClassAndValue(Object value, String valueString) Formats a class name including value.
private static boolean	isEquals(Object expected, Object actual) Returns whether expected and actual are considered equal.
static void	oneSecondRunnable() Runs/waits for one second.
static String	oneSecondSupplier() Runs/waits for one second and returns DATA.
static javax.json.JsonObject	readJsonFromResources(String folder, String filename) Extracts a JsonObject from a resource. The resource will be nested in a directory nested under the directory jsonsamples in the resource directory.
static void	threeSecondRunnable() Runs/waits for three seconds.
static String	threeSecondSupplier() Runs/waits for three seconds and returns DATA.
static void	twoSecondRunnable() Runs/waits for two seconds.
static String	twoSecondSupplier() Runs/waits for two seconds and returns DATA.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DATA

public static final String DATA

See Also:

Constant Field Values

Constructor Detail

TestUtils

public TestUtils()

Method Detail

readJsonFromResources

public static javax.json.JsonObject readJsonFromResources(String folder,
                                                          String filename)
                                                   throws IOException

Extracts a JsonObject from a resource.
The resource will be nested in a directory nested under the directory jsonsamples in the resource directory.

Parameters:

folder - name of the directory where the resource is found

filename - name of the file containing the resource

Returns:

JSON representation of the resource

Throws:

IOException - if the file cannot be found or an error occurs when opening the stream

oneSecondRunnable

public static void oneSecondRunnable()

Runs/waits for one second.

twoSecondRunnable

public static void twoSecondRunnable()

Runs/waits for two seconds.

threeSecondRunnable

public static void threeSecondRunnable()

Runs/waits for three seconds.

oneSecondSupplier

public static String oneSecondSupplier()

Runs/waits for one second and returns DATA.

Returns:

DATA

twoSecondSupplier

public static String twoSecondSupplier()

Runs/waits for two seconds and returns DATA.

Returns:

DATA

threeSecondSupplier

public static String threeSecondSupplier()

Runs/waits for three seconds and returns DATA.

Returns:

DATA

assertThrows

public static <T extends Throwable> T assertThrows(Class<T> expectedThrowable,
                                                   ThrowingRunnable runnable)

Asserts that runnable throws an exception of type expectedThrowable when executed. If it does, the exception object is returned. If it does not throw an exception, an AssertionError is thrown. If it throws the wrong type of exception, an AssertionError is thrown describing the mismatch; the exception that was actually thrown can be obtained by calling Throwable.getCause().

Type Parameters:

T - throwable type

Parameters:

expectedThrowable - the expected type of the exception

runnable - a function that is expected to throw an exception when executed

Returns:

the exception thrown by runnable

assertThrows

public static <T extends Throwable> T assertThrows(String message,
                                                   Class<T> expectedThrowable,
                                                   ThrowingRunnable runnable)

Asserts that runnable throws an exception of type expectedThrowable when executed. If it does, the exception object is returned. If it does not throw an exception, an AssertionError is thrown. If it throws the wrong type of exception, an AssertionError is thrown describing the mismatch; the exception that was actually thrown can be obtained by calling Throwable.getCause().

Type Parameters:

T - throwable type

Parameters:

message - the identifying message for the AssertionError (null okay)

expectedThrowable - the expected type of the exception

runnable - a function that is expected to throw an exception when executed

Returns:

the exception thrown by runnable

buildPrefix

private static String buildPrefix(String message)

Builds a message prefix.

Parameters:

message - the message

Returns:

the message with prefix

formatClass

private static String formatClass(Class<?> value)

Formats the given class name.

Parameters:

value - the class

Returns:

the formatted class name

format

static String format(String message,
                     Object expected,
                     Object actual)

Formats a message with given expected and actual value.

Parameters:

message - the message

expected - the expected object

actual - the actual object

Returns:

the message

formatClassAndValue

private static String formatClassAndValue(Object value,
                                          String valueString)

Formats a class name including value.

Parameters:

value - the class/object value

valueString - the value

Returns:

the formatted string

equalsRegardingNull

private static boolean equalsRegardingNull(Object expected,
                                           Object actual)

Returns whether expected and actual are considered equal regarding null.

Parameters:

expected - the expected value

actual - the actual value

Returns:

true for equal, false else

isEquals

private static boolean isEquals(Object expected,
                                Object actual)

Returns whether expected and actual are considered equal.

Parameters:

expected - the expected value

actual - the actual value

Returns:

true for equal, false else