Using jfairy 0.5.7. The following exception is triggered by Fairy.create().

java.lang.NoSuchMethodError: com.google.common.base.Preconditions.checkArgument(ZLjava/lang/String;Ljava/lang/Object;)V
	at io.codearte.jfairy.data.MapBasedDataMaster.getData(MapBasedDataMaster.java:87)
	at io.codearte.jfairy.data.MapBasedDataMaster.getString(MapBasedDataMaster.java:73)
	at io.codearte.jfairy.producer.text.TextProducerInternal.<init>(TextProducerInternal.java:51)
	at io.codearte.jfairy.producer.text.TextProducerInternal$$FastClassByGuice$$1d020c2d.newInstance(<generated>)
	at com.google.inject.internal.cglib.reflect.$FastConstructor.newInstance(FastConstructor.java:40)
	at com.google.inject.internal.DefaultConstructionProxyFactory$1.newInstance(DefaultConstructionProxyFactory.java:61)
	at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:105)
	at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:85)
	at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:267)
	at com.google.inject.internal.SingleParameterInjector.inject(SingleParameterInjector.java:38)
	at com.google.inject.internal.SingleParameterInjector.getAll(SingleParameterInjector.java:62)
	at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:104)
	at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:85)
	at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:267)
	at com.google.inject.internal.SingleParameterInjector.inject(SingleParameterInjector.java:38)
	at com.google.inject.internal.SingleParameterInjector.getAll(SingleParameterInjector.java:62)
	at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:104)
	at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:85)
	at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:267)
	at com.google.inject.internal.InjectorImpl$2$1.call(InjectorImpl.java:1016)
	at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
	at com.google.inject.internal.InjectorImpl$2.get(InjectorImpl.java:1012)
	at com.google.inject.assistedinject.FactoryProvider2.invoke(FactoryProvider2.java:770)
	at io.codearte.jfairy.$Proxy50.createFairy(Unknown Source)
	at io.codearte.jfairy.Bootstrap.createFairy(Bootstrap.java:55)
	at io.codearte.jfairy.Bootstrap$Builder.build(Bootstrap.java:237)
	at io.codearte.jfairy.Bootstrap.create(Bootstrap.java:85)
	at io.codearte.jfairy.Fairy.create(Fairy.java:48)

The issue

I am trying to load a static instance of Fairy via Fairy#create. My application is left hanging because that instance is never ready.

I get the following exception:

com.google.inject.ProvisionException: Unable to provision, see the following errors:

1) Error injecting constructor, java.lang.NoSuchMethodError: com.google.common.base.Preconditions.checkArgument(ZLjava/lang/String;Ljava/lang/Object;)V
  at io.codearte.jfairy.producer.text.TextProducerInternal.<init>(TextProducerInternal.java:49)
  while locating io.codearte.jfairy.producer.text.TextProducerInternal
    for parameter 0 at io.codearte.jfairy.producer.text.TextProducer.<init>(TextProducer.java:34)
  while locating io.codearte.jfairy.producer.text.TextProducer
    for parameter 0 at io.codearte.jfairy.Fairy.<init>(Fairy.java:37)
  while locating io.codearte.jfairy.Fairy annotated with @com.google.inject.internal.UniqueAnnotations$Internal(value=1)

It is worth noting that this exception is actually being swallowed somewhere down the line.

How to reproduce

Simply run the following piece of code:

public static final Fairy FAIRY = Fairy.create();

Versions affected

• 0.5.3
• 0.5.4 - not tested, unavailable on Maven Repository
• 0.5.5
• 0.5.6

Sorry for lacking specifics and not coming up with a PR for this -- I am really busy right now. Just trying to put it out there and let you know. Maybe I'm just missing something huge or you guys just can't reproduce it.

Either way, I'll be sticking to 0.5.3 for now! I might come back to it this weekend.

I tried to use JFairy in my project (TestNG 6.8.5) and got

java.lang.NoSuchMethodError: org.yaml.snakeyaml.Yaml.loadAs(Ljava/io/InputStream;Ljava/lang/Class;)Ljava/lang/Object;
at eu.codearte.fairyland.data.DataMaster.readResources(DataMaster.java:92)
at eu.codearte.fairyland.Fairy.(Fairy.java:35)
at eu.codearte.fairyland.Fairy.create(Fairy.java:72)
at eu.codearte.fairyland.Fairy.create(Fairy.java:61)
at eu.codearte.fairyland.Fairy.create(Fairy.java:50)
at org.stormnetdev.inputdata.testdata.DataProvider.(DataProvider.java:6)
at org.stormnetdev.pageobjects.sampletest.GoogleHomePage.performRandomPersonSearchQuery(GoogleHomePage.java:24)
at org.stormnetdev.tests.sampletest.SampleTest.sampleTest(SampleTest.java:12)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:84)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:714)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:901)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1231)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
at org.testng.TestRunner.privateRun(TestRunner.java:767)
at org.testng.TestRunner.run(TestRunner.java:617)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:334)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291)
at org.testng.SuiteRunner.run(SuiteRunner.java:240)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1224)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1149)
at org.testng.TestNG.run(TestNG.java:1057)
at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:111)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:204)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:175)

The current release (0.5.0) does not support the already developed French locale. Missing release new version with the current updates.

Recently a client of mine from the UK was looking for a tool for test data generation, but it generates only American profiles.

you should remove the following dependency:

<dependency>
	<groupId>org.codehaus.groovy</groupId>
	<artifactId>groovy-all</artifactId>
	<version>2.4.14</version>
</dependency>

Why?

• It is only relevant for test, but not scoped to test. So it will transitively be included into your clients' projects.
• There's no need to declare it explicitly, as it comes automatically with spock.
• If there's a reason I did not see for manually upgrading the version, then you should at least set the scope to test

Thanks :-)

JFairy depends on Snakeyaml library.
Snakeyaml has known vulnerability CVE-2017-18640.
It was reported 3 years ago, but it still is open.
Please drop dependency on Snakeyaml library.

For more information, please see:
https://nvd.nist.gov/vuln/detail/CVE-2017-18640
https://bitbucket.org/asomov/snakeyaml/issues/377/allow-configuration-for-preventing-billion

Hi,

Could you please also include the web template (https://devskiller.com/datafairy/) with the liberary. I want to host to my local machine with customization according to my project.

Generated names should not be used verbatim in the construction of email addresses, because they can contain characters that are not allowed in email addresses.

Example: "Hugo Groß" leads to the German ß umlaut appearing in his email address.

I am trying to create on my application a company with a city from my country. It would be glad to be able to generate a city given a country. I have several idea :

• Add Nationality or country of birth in person and PersonProperties. I could get city from the person
• Add Country in company and in CountryProperties
• Add country in the Address

Regards

More: http://stackoverflow.com/questions/27156842/how-do-i-change-the-language-in-jfairys-text-objects/28440685#28440685

When a person object is instantiated, and then date of birth and age are generated, the age will not match up with birth date year.

Would be nice to have this one in addition to first and last names.

public static String randomUrl(Boolean isHttps) {
NetworkProducer net = Fairy.create().networkProducer();
return net.url(isHttps);
}

Result
https://������������.com

More: http://stackoverflow.com/questions/9193877/is-there-any-fake-data-generator-that-works-with-android/24262121#24262121

just like MockitoExtension to supply mock extension

   @Test
    void testMock1(@Mock Person person) {
        when(person.getName()).thenReturn("Dilbert");
    }

In jfairy, just like following:

   @Test
    void testMock1(@Faked Person person) {
          person.getFullName();
    }

Faker has a unique modifier that forces it to generate unique values. Would be great to have something like that in jFairy.

This code is currently present in Bootstrap.java:

case FR:
    return new EsFairyModule(dataMaster, randomGenerator);

Please can you provide an example of how to use the PersonProperties.telephoneFormat? I am looking for an 11 digit number starting with 0.

Thanks

Current randomElement() methods do not support getting a random element of my own type like an enum. Would be nice to have such a feature.

I also think it would be better for such a method to get a vararg argument instead of a list. But maybe both options make sense.

I'm using jfairy 0.5.6.
I want to add a chinese config jfairy_zh.yml and create Fairy by Fairy.create(Locale.CHINA).
In most situations it is ok to use default EnFairyModule as English is most popular language in the world.

However I met with an Exception

java.lang.IllegalArgumentException: No enum constant io.codearte.jfairy.producer.util.LanguageCode.ZH
at java.lang.Enum.valueOf(Enum.java:236)
at io.codearte.jfairy.producer.util.LanguageCode.valueOf(LanguageCode.java:7)
at io.codearte.jfairy.Bootstrap.getFairyModuleForLocale(Bootstrap.java:118)

I believe that return a default value (LanguageCode.EN) of LanguageCode.valueOf() (or a wrapper method) for unknown locale may be more reasonable, as there is a coming switch-default structure to handle the unknown locale.

    LanguageCode code = null;
    try {
        code = LanguageCode.valueOf(locale.getLanguage().toUpperCase());
    } catch (IllegalArgumentException e) {
        LOG.warn("Uknown locale " + locale);
        code = LanguageCode.EN;
    }

==========

Another question is that ./gradlew build always fails with exceptions signing.keyId and signing.secretKeyRingFile has to be configured while building the project cloning from github. I'm not familiar with gradle :( (I use maven).

If you guys intend to support Chinese language , I would like to help. Thanks.

If you call the TextProducer class method word with exactly 117 items, you will receive an empty result back.

So the following example:

Faityr.create().textProducer().word(117);

will result in an empty string. This has to do with it being 117 words available in the internal representation of the words in TextProducerInternal is of size 117, wish results in the method in BaseProducer:

public <T> List<T> randomElements(List<T> elements, int count) {
    Collections.shuffle(elements, this.random);
    return elements.subList(0, count % elements.size());
}

the sublist will become 0, 117%117 = 0, so no result will be returned. This depends on the number of words available of course, but I assume that it's not the expected result wished for.

Oracle plans to end releasing public updates for Java 7 in April 2015. We are considering to end support for Java 7 in jFairy along with it (jFairy versions released after that time would require Java 8+).

If you (as a jFairy user) have a good argument to keep support for Java 7 a little bit longer please say it in that issue.

Expected: $street $number
Actual: $number $street

Would be nice to have a method that's the opposite of the existing randomDateInThePast().

Hey,

New to this API, can anybody point me to documentation that covers setting a dev environment with dependencies? Looks like there are many! Anyway - help much appreciated!

.Chris

I think those dependencies are to much, and a lot of them are no need for end-user.

I suggest that you consider to remove or change it to optional, like:

<dependency>
    <groupId>org.yaml</groupId>
    <artifactId>snakeyaml</artifactId>
    <version>[1.9,2.0)</version>
    <optional>true</optional>
</dependency>

Hi

is there a parameter to specify the phone number format. I had a look through the methods and can't seem to see anything.

currently, numbers returned are between 9 & 10 digits with - separator.
I am stripping out the - but need to make the numbers a consistent amount of digits.

I may be missing the detail, if so can you point me in the right direction.
Thanks

Please document if the library is thread-safe. I'm generating millions of test samples and want to know if I can safely reuse the same instance across threads. Also during prototyping, I use Fairy object as a Spring singleton bean - is it safe as well?

Another question - if I create hundreds of Fairy instances in quick succession, will they produce different samples? Or maybe (due to the same random seed maybe?) I'll get duplicates?

I'm using jFairy 0.5.9 with german locale. Generating a person randomly results into an invalid email address because characters like ß in persons name are even used for the email address:

weiß[email protected]

The following invocations will always return 0:

randomInt(Integer.MAX_VALUE)
randomBetween(0, Integer.MAX_VALUE)

The following invocation will always return a negative number:

randomBetween(0L, Long.MAX_VALUE)

The reason for this behavior for integers is this weird logic:

int range = max - min + 1;
int randomInt = range > 0 ? this.random.nextInt(range) : 0;
return min + randomInt;

Subtracting 0 from the max integer value and then adding 1 to it overflows it and hence range is never above 0.

Something similar is being done for longs as well.

A quickfix is to subtract 1 from the max values but that's a huge WTF moment. These methods fail to deliver their promises.

I included JFairy in my gradle build via

compile('io.codearte.jfairy:jfairy:0.5.9')

and generated a Person. The following stack trace appears at runtime:

Caused by: java.lang.IllegalArgumentException: File jfairy_ita.yml was not found on classpath at io.codearte.jfairy.data.MapBasedDataMaster.readResources(MapBasedDataMaster.java:100) ~[jfairy-0.5.9.jar:0.5.9] at io.codearte.jfairy.Bootstrap.fillDefaultDataMaster(Bootstrap.java:59) ~[jfairy-0.5.9.jar:0.5.9] at io.codearte.jfairy.Bootstrap.access$100(Bootstrap.java:38) ~[jfairy-0.5.9.jar:0.5.9] at io.codearte.jfairy.Bootstrap$Builder.build(Bootstrap.java:225) ~[jfairy-0.5.9.jar:0.5.9] at io.codearte.jfairy.Bootstrap.create(Bootstrap.java:93) ~[jfairy-0.5.9.jar:0.5.9] at io.codearte.jfairy.Fairy.create(Fairy.java:52) ~[jfairy-0.5.9.jar:0.5.9]

As reported in #78. ./gradlew build fails with:

* Where:
Build file '/home/foo/code/jfairy/build.gradle' line: 114

* What went wrong:
signing.keyId and signing.secretKeyRingFile has to be configured (e.g. in ~/.gradle/gradle.properties)

if the latest commit is tagged with a release tag. It can be confusing for external contributors.

As a workaround -x sign can be used.

    private static class CaseInsensitiveMap extends HashMap<String, Object> {

        @Override
        @SuppressWarnings("unchecked")
        public Object put(String key, Object value) {
            String loweredKey = key.toLowerCase();
            Object valueToInsert = value;

            if (value instanceof Map) {
                valueToInsert = new CaseInsensitiveMap();
                ((CaseInsensitiveMap) valueToInsert).putAll((Map<? extends String, ?>) value);
            }

            return super.put(loweredKey, valueToInsert);
        }

        @Override
        @SuppressWarnings("unchecked")
        public Object get(Object key) {
            return super.get(((String) key).toLowerCase());
        }

    }

This is only overriding the put method, not the putAll method. In JDK7 and below, that was fine. In JDK8 both put and putAll delegate to a different method: putVal.

I'd say that subclassing a JDK class is probably a bad idea anyway. This should probably be done with delegation.

For example fairy.uniqueCollection(personProvider, uniqueConditionals)

It would be great if the project can be used directly from either maven central or any other maven hosting service, like https://bintray.com/

Let me know if I can help

Write now, fairy versions are differentiated by lang codes, for example 'EN'; however in many instances, this is not enough. For example, an EN fairy will return data in English, but also in formats correct for a specific country - US. This kind of info should be included so tath fairies for various locale with the same language can be added.

I have no beans.xml file in my Java EE 7 application (implicit bean archive). Deploy fails with error:

org.glassfish.deployment.common.DeploymentException: CDI deployment failure:Exception List with 2 exceptions:
Exception 0 :
org.jboss.weld.exceptions.DeploymentException: WELD-001408: Unsatisfied dependencies for type BaseProducer with qualifiers @Default
  at injection point [BackedAnnotatedParameter] Parameter 1 of [BackedAnnotatedConstructor] @Inject public org.jfairy.producer.DateProducer(BaseProducer, TimeProvider)
  at org.jfairy.producer.DateProducer.<init>(DateProducer.java:0)
...
Exception 0 :
org.jboss.weld.exceptions.DeploymentException: WELD-001408: Unsatisfied dependencies for type BaseProducer with qualifiers @Default
  at injection point [BackedAnnotatedParameter] Parameter 1 of [BackedAnnotatedConstructor] @Inject org.jfairy.data.DataMaster(BaseProducer)
  at org.jfairy.data.DataMaster.<init>(DataMaster.java:0)
...

jfairy uses Guice but container (GlassFish 4.1) thinks it uses CDI.
Guava team had a similar problem https://code.google.com/p/guava-libraries/issues/detail?id=1433.

I created beans.xml but it didn't help:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://xmlns.jcp.org/xml/ns/javaee"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/beans_1_1.xsd"
       bean-discovery-mode="annotated">    

    <scan>
        <exclude name="org.jfairy.**"/>
    </scan>
</beans>

Would be nice to have something like in Faker's Address formatter.

i use jfairy in testng but i met error.
how can i?

Fairy fairy = Fairy.create();
Person person = fairy.person();

FAILED: UserAddFailed
java.lang.NoClassDefFoundError: com/google/inject/internal/util/$Maps
    at com.google.inject.assistedinject.BindingCollector.<init>(BindingCollector.java:34)
    at com.google.inject.assistedinject.FactoryModuleBuilder.<init>(FactoryModuleBuilder.java:206)
    at io.codearte.jfairy.FairyModule.configure(FairyModule.java:28)
    at io.codearte.jfairy.EnFairyModule.configure(EnFairyModule.java:24)
    at com.google.inject.AbstractModule.configure(AbstractModule.java:62)
    at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:259)
    at com.google.inject.spi.Elements.getElements(Elements.java:109)
    at com.google.inject.internal.InjectorShell$Builder.build(InjectorShell.java:136)
    at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:104)
    at com.google.inject.Guice.createInjector(Guice.java:96)
    at com.google.inject.Guice.createInjector(Guice.java:73)
    at com.google.inject.Guice.createInjector(Guice.java:62)
    at io.codearte.jfairy.Bootstrap.createFairy(Bootstrap.java:39)
    at io.codearte.jfairy.Bootstrap$Builder.build(Bootstrap.java:155)
    at io.codearte.jfairy.Bootstrap.create(Bootstrap.java:70)
    at io.codearte.jfairy.Fairy.create(Fairy.java:45)
    at me.dailylook.tests.user.UserAdd.UserAddFailed(UserAdd.java:28)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:483)
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:84)
    at org.testng.internal.Invoker.invokeMethod(Invoker.java:714)
    at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:901)
    at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1231)
    at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
    at org.testng.TestRunner.privateRun(TestRunner.java:767)
    at org.testng.TestRunner.run(TestRunner.java:617)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:348)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:343)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:305)
    at org.testng.SuiteRunner.run(SuiteRunner.java:254)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1224)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1149)
    at org.testng.TestNG.run(TestNG.java:1057)
    at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:111)
    at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:204)
    at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:175)
Caused by: java.lang.ClassNotFoundException: com.google.inject.internal.util.$Maps
    at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 41 more

Fairy.create().person().getAddress().city()

Exception in thread "main" com.google.inject.ProvisionException: Guice provision errors:

1. Error injecting constructor, java.lang.IllegalArgumentException: No such key: companyNames
   at org.jfairy.producer.company.Company.(Company.java:27)
   while locating org.jfairy.producer.company.Company
   for parameter 6 at org.jfairy.producer.person.Person.(Person.java:68)
   while locating org.jfairy.producer.person.Person

1 error
at com.google.inject.internal.InjectorImpl$4.get(InjectorImpl.java:987)
at com.google.inject.internal.InjectorImpl.getInstance(InjectorImpl.java:1013)
at org.jfairy.Fairy.person(Fairy.java:89)
....
Caused by: java.lang.IllegalArgumentException: No such key: companyNames
at com.google.common.base.Preconditions.checkArgument(Preconditions.java:120)
at org.jfairy.data.DataMaster.getData(DataMaster.java:78)
at org.jfairy.data.DataMaster.getStringList(DataMaster.java:41)
at org.jfairy.data.DataMaster.getRandomValue(DataMaster.java:69)
at org.jfairy.producer.company.Company.(Company.java:30)
at org.jfairy.producer.company.Company$$FastClassByGuice$$b478b369.newInstance()
at com.google.inject.internal.cglib.reflect.$FastConstructor.newInstance(FastConstructor.java:40)
at com.google.inject.internal.DefaultConstructionProxyFactory$1.newInstance(DefaultConstructionProxyFactory.java:60)
at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:85)
at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:254)
at com.google.inject.internal.SingleParameterInjector.inject(SingleParameterInjector.java:38)
at com.google.inject.internal.SingleParameterInjector.getAll(SingleParameterInjector.java:62)
at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:84)
at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:254)
at com.google.inject.internal.InjectorImpl$4$1.call(InjectorImpl.java:978)
at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1024)
at com.google.inject.internal.InjectorImpl$4.get(InjectorImpl.java:974)
... 9 more

When running jfairy on android with roboelectric 3.0+, there is a package dependency mismatch against the asm library. jfairy runs on asm:asm:3.1 which is nearly a decade old while roboelectric run against asm 5.+. The pkg dep output for jfairy is below.

Injection is good and all but by including it in this library it increases the surface area for conflicts like above. When making the trade-off in terms of library maintainability vs. compatibility I would side on the compatibility especially as in the case of a library like this that really doesn't require injection or joda time etc.

+--- io.codearte.jfairy:jfairy:0.4.1
| +--- com.google.guava:guava:[15.0,) -> 19.0-rc1
| +--- com.google.inject:guice:3.0
| | +--- javax.inject:javax.inject:1
| | +--- aopalliance:aopalliance:1.0
| | --- org.sonatype.sisu.inject:cglib:2.2.1-v20090111
| | --- asm:asm:3.1 <----------------------------------------- conflict
| +--- org.yaml:snakeyaml:[1.9,2.0) -> 1.15
| +--- org.iban4j:iban4j:2.1.1
| +--- com.google.inject.extensions:guice-assistedinject:3.0
| | --- com.google.inject:guice:3.0 (*)
| +--- joda-time:joda-time:2.3
| +--- org.reflections:reflections:0.9.9
| | +--- com.google.guava:guava:15.0 -> 19.0-rc1
| | +--- org.javassist:javassist:3.18.2-GA -> 3.19.0-GA
| | --- com.google.code.findbugs:annotations:2.0.1
| +--- org.apache.commons:commons-lang3:3.3.2
| --- org.slf4j:slf4j-api:1.7.7

eu.codearte.jfairy.producer.DateProducerSpec fails on Travis. It happened in the past, but was silently ignored thanks to the ingoreFailures flag in build.gradle... The problem is pretty visible in notIgnoreFailingTest branch (see Travis).

@mariuszs any idea?

Some classes, such as PeselProvider, contain names of number types in national languages. This is not really readable for anyone that does not know a given language and imo should be switched to an English name preceded by a country code prefix.

The build.gradle file specifies that any version greater than 15 of Google Guava should be used.

Google has just released Guava 21.0.rc1, which requires Java 8. Due to this, projects using JFairy that are being compiled with Java 1.7 fail with a Java Version Mismatch, for instance:

java.lang.UnsupportedClassVersionError: com/google/common/collect/Sets : Unsupported major.minor version 52.0