Update code style and reorganise methods
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1 changed files with 105 additions and 98 deletions
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@ -3,39 +3,48 @@ package net.kemitix.wiser.assertions;
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import org.subethamail.wiser.Wiser;
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import org.subethamail.wiser.WiserMessage;
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import javax.mail.MessagingException;
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import javax.mail.internet.MimeMessage;
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import javax.mail.internet.MimeMultipart;
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import java.io.IOException;
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import java.text.MessageFormat;
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import java.util.List;
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import java.util.function.Predicate;
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import java.util.function.Supplier;
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import javax.mail.MessagingException;
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import javax.mail.internet.MimeMessage;
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import javax.mail.internet.MimeMultipart;
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/**
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* Provides a set of assertions for checking the status of any messages received
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* by subethamail's Wiser.
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*
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* <pre>
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* {@code
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* <code>
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* {@literal @}Before
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* public void setUp() throws IOException {
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* wiser = new Wiser(PORT);
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* wiser.start();
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* }
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*
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* {@literal @}After public void tearDown() { wiser.stop(); }
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*
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* {@literal @}Test public void testMail() { //given ...
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*
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* //when ...
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*
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* //then WiserAssertions.assertReceivedMessage(wiser) .from(sender)
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* .to(recipient_alpha) .to(recipient_beta) .withSubjectContains(subject_prefix)
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* .withSubjectContains(subject_suffix) .withContentContains(message_element_1)
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* .withContentContains(message_element_2)
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* .withContentContains(message_element_3); }
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* {@literal @}After
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* public void tearDown() {
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* wiser.stop();
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* }
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*
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* {@literal @}Test
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* public void testMail() {
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* //given ...
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* //when ...
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* //then
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* WiserAssertions.assertReceivedMessage(wiser)
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* .from(sender)
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* .to(recipient_alpha)
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* .to(recipient_beta)
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* .withSubjectContains(subject_prefix)
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* .withSubjectContains(subject_suffix)
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* .withContentContains(message_element_1)
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* .withContentContains(message_element_2)
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* .withContentContains(message_element_3);
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* }
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* </code>
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* </pre>
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*/
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public final class WiserAssertions {
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@ -83,6 +92,39 @@ public final class WiserAssertions {
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return this;
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}
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/**
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* Checks that at least on message matches the predicate or the supplied
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* exception will be thrown.
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*
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* @param predicate the condition a message must match
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* @param exceptionSupplier the supplier of the exception
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*/
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private void findFirstOrElseThrow(
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final Predicate<WiserMessage> predicate,
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final Supplier<AssertionError> exceptionSupplier) {
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messages.stream()
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.filter(predicate)
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.findFirst()
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.orElseThrow(exceptionSupplier);
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}
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/**
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* Returns a {@link Supplier} for an {@link AssertionError}.
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*
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* @param errorMessage the message for the exception
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* @param args the parameters to insert into the message using
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* {@link MessageFormat}
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*
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* @return a supplier of an {@link AssertionError}
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*/
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@SuppressWarnings(
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{"ThrowableInstanceNotThrown", "ThrowableInstanceNeverThrown"})
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private static Supplier<AssertionError> assertionError(
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final String errorMessage, final Object... args) {
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return () -> new AssertionError(
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MessageFormat.format(errorMessage, args));
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}
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/**
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* Checks that there was at least one email received that was sent to the
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* {@code recipient}.
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@ -106,13 +148,44 @@ public final class WiserAssertions {
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* @return the {@code WiserAssertions} instance
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*/
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public WiserAssertions withSubject(final String subject) {
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Predicate<WiserMessage> predicate
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= m -> subject.equals(unchecked(getMimeMessage(m)::getSubject));
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findFirstOrElseThrow(predicate, assertionError(ERROR_MESSAGE_SUBJECT,
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subject));
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Predicate<WiserMessage> predicate = m -> subject.equals(
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unchecked(getMimeMessage(m)::getSubject));
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findFirstOrElseThrow(predicate,
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assertionError(ERROR_MESSAGE_SUBJECT, subject));
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return this;
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}
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/**
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* Convert any checked Exceptions into unchecked Exceptions.
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*
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* @param <T> the item type to be returned after suppressing any
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* checked exceptions
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* @param supplier the source of the return value that could cause a checked
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* exception
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*
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* @return the product of the supplier
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*/
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@SuppressWarnings("illegalCatch")
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public static <T> T unchecked(final ThrowingSupplier<T> supplier) {
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try {
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return supplier.get();
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} catch (Throwable e) {
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throw new RuntimeException(e);
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}
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}
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/**
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* Returns the mime message within the {@link WiserMessage} converting any
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* {@link MessagingException}s into {@link RuntimeException}s.
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*
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* @param wiserMessage the message
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*
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* @return the mime message
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*/
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private MimeMessage getMimeMessage(final WiserMessage wiserMessage) {
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return unchecked(wiserMessage::getMimeMessage);
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}
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/**
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* Checks that there was at least one email received that has a subject that
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* contains the search text.
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@ -122,11 +195,10 @@ public final class WiserAssertions {
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* @return the {@code WiserAssertions} instance
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*/
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public WiserAssertions withSubjectContains(final String subject) {
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Predicate<WiserMessage> predicate
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= m -> unchecked(getMimeMessage(m)::getSubject)
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.contains(subject);
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findFirstOrElseThrow(predicate, assertionError(ERROR_MESSAGE_SUBJECT,
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subject));
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Predicate<WiserMessage> predicate = m -> unchecked(
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getMimeMessage(m)::getSubject).contains(subject);
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findFirstOrElseThrow(predicate,
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assertionError(ERROR_MESSAGE_SUBJECT, subject));
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return this;
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}
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@ -140,8 +212,8 @@ public final class WiserAssertions {
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*/
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public WiserAssertions withContent(final String content) {
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findFirstOrElseThrow(m -> {
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ThrowingSupplier<String> contentAsString
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= () -> getMimeMessageBody(m).trim();
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ThrowingSupplier<String> contentAsString = () -> getMimeMessageBody(
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m).trim();
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return content.equals(unchecked(contentAsString));
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}, assertionError("No message with content [{0}] found!", content));
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return this;
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@ -158,8 +230,8 @@ public final class WiserAssertions {
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public WiserAssertions withContentContains(final String content) {
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StringBuilder messageContent = new StringBuilder();
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findFirstOrElseThrow((WiserMessage m) -> {
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ThrowingSupplier<String> contentAsString
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= () -> getMimeMessageBody(m).trim();
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ThrowingSupplier<String> contentAsString = () -> getMimeMessageBody(
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m).trim();
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messageContent.append(unchecked(contentAsString));
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return unchecked(contentAsString).contains(content);
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}, assertionError(
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@ -197,71 +269,6 @@ public final class WiserAssertions {
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return result;
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}
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/**
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* Checks that at least on message matches the predicate or the supplied
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* exception will be thrown.
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*
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* @param predicate the condition a message must match
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* @param exceptionSupplier the supplier of the exception
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*/
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private void findFirstOrElseThrow(
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final Predicate<WiserMessage> predicate,
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final Supplier<AssertionError> exceptionSupplier
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) {
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messages.stream().filter(predicate)
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.findFirst().orElseThrow(exceptionSupplier);
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}
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/**
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* Returns the mime message within the {@link WiserMessage} converting any
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* {@link MessagingException}s into {@link RuntimeException}s.
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*
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* @param wiserMessage the message
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*
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* @return the mime message
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*/
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private MimeMessage getMimeMessage(final WiserMessage wiserMessage) {
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return unchecked(wiserMessage::getMimeMessage);
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}
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/**
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* Returns a {@link Supplier} for an {@link AssertionError}.
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*
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* @param errorMessage the message for the exception
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* @param args the parameters to insert into the message using
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* {@link MessageFormat}
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*
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* @return a supplier of an {@link AssertionError}
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*/
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@SuppressWarnings(
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{"ThrowableInstanceNotThrown", "ThrowableInstanceNeverThrown"})
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private static Supplier<AssertionError> assertionError(
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final String errorMessage,
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final Object... args
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) {
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return ()
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-> new AssertionError(MessageFormat.format(errorMessage, args));
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}
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/**
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* Convert any checked Exceptions into unchecked Exceptions.
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*
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* @param <T> the item type to be returned after suppressing any
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* checked exceptions
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* @param supplier the source of the return value that could cause a checked
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* exception
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*
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* @return the product of the supplier
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*/
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@SuppressWarnings("illegalCatch")
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public static <T> T unchecked(final ThrowingSupplier<T> supplier) {
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try {
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return supplier.get();
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} catch (Throwable e) {
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throw new RuntimeException(e);
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}
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}
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/**
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* Converts a {@link MimeMultipart} into a {@link String} stripping out the
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* mime part boundary and headers..
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