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jqwik v1.3.0 Release Notes

Release Date: 2020-05-29 // almost 4 years ago

  • 🆕 New and Enhanced Features

    ➕ Added user-guide documentation for Lifecycle Hooks

    ➕ Added new statistics report formats: Histogram and NumberRangeHistogram

    👌 Improved shrinking of dependent parameters.

    ➕ Added Arbitraries.ofSuppliers(..) to choose among a set of mutable objects.

    You can now influence the distribution of random number generation:
    👍 All numeric arbitraries now support withDistribution(RandomDistribution)
    0️⃣ to choose between RandomDistribution.biased() (default),
    RandomDistribution.uniform() and RandomDistribution.gaussian(borderSigma).

    0️⃣ Default number generation has now a much higher bias towards numbers
    that are closer to the shrinking target of a number range.

    Using a faster implementation of java.util.Random under the hood

    Massively improved and enhanced generation of edge cases

    Edge Cases Mode is now being reported per property

    ➕ Added StringArbitrary.withChars(Arbitrary<Character> characterArbitrary)

    ➕ Added CharacterArbitrary.with(Arbitrary<Character> characterArbitrary)

    Promoted APIs from EXPERIMENTAL to MAINTAINED

    • Arbitraries.nothing()
    • Arbitrary.collect(Predicate<List<T>> until)
    • Arbitrary.sample()
    • Arbitrary.sampleStream()
    • Arbitrary.injectDuplicates(double duplicateProbability)
    • Arbitrary.tuple1()
    • Arbitrary.tuple2()
    • Arbitrary.tuple3()
    • Arbitrary.tuple4()
    • Annotation net.jqwik.api.From
    • Class net.jqwik.api.Functions
    • Class net.jqwik.api.arbitraries.FunctionArbitrary

    💥 Breaking Changes

    Decimal Generation: min and max values are now rejected if they have more decimal places
    than the generator's scale allows.

    Decimal Shrinking: Values without decimal places are no longer preferred while shrinking.

    ✂ Removed deprecated APIs

    • Arbitrary.withSamples(T... samples)
    • RandomGenerator.withSamples(T... samples)
    • TryLifecycleContext.propertyContext()

    - net.jqwik.api.Statistics: Replaced by net.jqwik.api.statistics.Statistics

    Set most public methods of RandomGenerator to API status INTERNAL

    Set Arbitrary.exhaustive() to API status INTERNAL

    Set ExhaustiveGenerator and all its methods to API status INTERNAL

    The evaluation order of SkipExecutionHook hooks can no longer be influenced.

    🐛 Bug Fixes

    An OutOfMemoryError will go through to the top. Fix for
    bug report from jqwik-spring.

    Arbitraries.of(listOfValues) would break when list does not allow null values.

    0️⃣ Generated functions now handle default methods correctly