package qcheck

Changes

0.21.2

• Reintroduce the Shrink.list_spine fix by catching Invalid_argument and falling back on an address comparison.

• Fix #273 by lowering ppx_deriving_qcheck's qcheck dependency to qcheck-core

0.21.1

• Roll back the Shrink.list_spine fix, as it was utilizing polymorphic equality that can raise an exception on function comparison.

0.21

• make Test.check_result, Test.check_cell_exn, and Test.check_exn honor test polarity by raising Test_unexpected_success when a negative test (expected to have a counter example), unexpectedly succeeds.

• fix issue with ppx_deriving_qcheck deriving a generator with unbound gen for recursive types #269 and a related issue when deriving a generator for a record type

• fix #241 causing QCheck.Shrink.int* to emit duplicates, also affecting QCheck.Shrink.{char,string}

• fix a cornercase where Shrink.list_spine would emit duplicates

0.20

• add several new bytes combinators:

  • {QCheck,QCheck2}.Gen.{bytes_size,bytes,bytes_of,bytes_printable,bytes_small,bytes_small_of}

  • QCheck.{Print,Shrink,Observable}.bytes

  • QCheck2.{Print,Shrink}.bytes

  • QCheck.{bytes_gen_of_size,bytes_of,bytes,bytes_small,bytes_small_of,bytes_of_size,bytes_printable}

• add new string combinators and aliases:

  • {QCheck,QCheck2}.Gen.{string_small,string_small_of}

  • QCheck.{string_small,string_small_of,string_of,string_printable,string_printable_of_size,string_small_printable,string_numeral,string_numeral_of_size}

• (QCheck2.small_string character generator argument is no more optional - reverted again due to backwards incompatibility)

• add an optional argument with conservative default to Shrink.string

• fix shrinkers in QCheck.{printable_string,printable_string_of_size,small_printable_string,numeral_string,numeral_string_of_size} #257

• add QCheck2.Gen.set_shrink to modify the generator's shrinker

• add QCheck2.Gen.no_shrink to build a generator with no shrinking

• add an environment variable QCHECK_MSG_INTERVAL to control QCheck_base_runner.time_between_msg

• fix unknown option error message referring to qtest

0.19.1

• fix: allow ~count in Test.make to be 0

• fix: allow ~long_factor in Test.make to be 0

0.19

• use Float.equal for comparing floats in the Observable module underlying function generators.

• add optional debug_shrink parameters in alcotest interface and expose default debug_shrinking_choices in test runners

• add missing ?handler parameter to Test.check_cell_exn

• remove --no-buffer option on dune runtest to avoid garbling the test output

• add an option retries parameter to Test.make et al. for checking a property repeatedly while shrinking. This can be useful when testing non-deterministic code. #212

• add tup2 to tup9 for generators

• add Test.make_neg for negative property-based tests, that are expected not to satisfy the tested property.

• rename Gen.opt to Gen.option but keep the old binding for compatibility.

• add additional expect and unit tests and refactor expect test suite

• fix function generation affecting reproducability #236

• add a shrinker performance benchmark #177

• fix distribution of QCheck2.printable which would omit certain characters

• shrinker changes

  • recursive list shrinker with better complexity

  • string shrinker reuses improved list shrinker and adds char shrinking

  • function shrinker now shrinks default entry first and benefits from list shrinker improvements

  • replacing the linear-time char shrinker with a faster one reusing the bisecting int shrinker algorithm

  • add Shrink.char_numeral and Shrink.char_printable

  • add shrinking for char arbitrarys char, printable_char, and numeral_char

• documentation updates:

  • clarify upper bound inclusion in Gen.int_bound and Gen.int_range

  • clarify printable_char and Gen.printable distributions

  • add missing string_gen_of_size and small_printable_string documentation

  • document QCheck_alcotest.to_alcotest

  • fix documented size distribution for arbitrary generators string_gen, string, printable_string, numeral_string, list, and array

  • fix exception documentation for check_result, check_cell_exn, and check_exn

  • fix documentation for the distribution of Gen.printable and printable_char

  • fix documentation for the shrinking behaviour of QCheck2.printable

• add environment variable QCHECK_LONG_FACTOR similar to QCHECK_COUNT #220

• make test suite run on 32-bit architectures

0.18.1

• fix Gen.{nat,pos}_split{2,}

• fix stack overflow in #156

0.18

This releases marks the addition of QCheck2, a module where generation and shrinking are better integrated. See #109 and #116.

This API is still experimental. The normal QCheck module is still there and hasn't changed much.

deprecations and breakges:

• make QCheck.Test_result.t abstract and add missing getters

• deprecate QCheck.oneof

• deprecate Gen.string_readable in favor of Gen.(string_of char) or the new Gen.string_printable

• require at least OCaml 4.08

other changes:

• unsigned int32 and int64

• rename small_int_corners

• add ?ratio to opt, to modify random distribution of options

0.17

• new function: Gen.delay

• install printer for an internal exception

• fix(runner): use random state independently for each test

• Fixes distribution and min_int issues

• doc: point to @jmid 's website

0.16

• fix(runner): detect more failures in the runner

• fix: catch exceptions in generators and log them. (#99)

• test: add test for #99

• fix doc

0.15

• fix: in main runner, remove reset line in more places if colors=false

• fix: invalid arg in int_range when a<0

• fix(runner): do not use ansi code for random seed if colors=false

• feat: on >=4.08, provide let operators

0.14

• modify int_range to make it accept ranges bigger than max_int.

• less newline-verbose stats

• add int{32,64} shrinkers to arbitrary gens

• add int{32,int64} shrinkers

• move to ounit2 for QCheck_ounit

0.13

• make counter private

• Add debug shrinking log

• fix: small fix related to stdlib/pervasives

• feat: add flatten combinators in gen

0.12

• fix singleton list shrinking

• feat: add Gen.char_range and Gen.(<$>) (credit @spewspews)

0.11

• Add QCheck.Gen.{string_of,string_readable}

• fix int_bound bound inclusiveness problem

• change implementation of int_bound to generate values using Random.State.int for bound < 2^30

• add weighted shuffled lists generator

• add float_range to generate a floating-point number in the given range (inclusive)

• add float_bound_inclusive and float_bound_exclusive to generate floating-point numbers between 0 and a given bound

0.10

• Shrink: decompose Shrink.list into Shrink.list_spine and Shrink.list_elems

• Gen.fix has a more general and useful type

• update README to include Rely section (qcheck now available for reason-native!)

• Fix stat printing

• speed-up list shrinker

• Better int shrinking

• core: modify proba distributions again, add big_nat

• feat: add small_array, modify distributions

• print number of warnings in runner's summary

• refactor: modify type of results to make them more accurate

• feat: warn/fail if too many tests passed only b/c precondition failed

0.9

• add qcheck-ounit sublibrary

• use environment variables to configure qcheck-alcotest tests

• alcotest backend for qcheck

• make qcheck.ounit tests verbose by default

• make qcheck is a compatibility library, depends on qcheck-core

• split lib into qcheck and qcheck.ounit

• add TestResult.is_success helper

• give access to list of instances in test results

• allow setting time_between_msg in runner

• chore: remove submodule

• chore: add travis support

• doc: explanations about qcheck.ounit runners

• doc: update readme

0.8

• migrate to jbuilder

• fix warnings

• add some useful functions

• update oasis files (close #48)

• update copyright header (closes #47)

0.7

• switch to BSD license, make it more explicit (close #43)

• improve multi-line message printing in ounit (closes #46)

• fix complexity of add_stat

• allow negative entries in statistics (see #40)

• add a way for tests to report messages to the user (see #39)

• add QCheck.Shrink.int_aggressive and make default int shrinker faster

• shrinker for map_keep_input

• add QCheck.set_gen, missing for some reason

• more compact verbose output (see #33)

• better handling of dynamic progress line

• Add colors to checkmarks in verbose mode

• improve statistics display for runner

• recover exception of shrunk input

• print status line before the solving starts

0.6

• add find_example and find_example_gen to synthesize values from properties (see #31)

• add QCheck.gen for accessing the random generator easily

• colorful runners, with --no-colors to disable them

• add more generator (for corner cases)

• better generation of random functions (see #8), using Observable and an efficient internal representation using heterogeneous tuples, printing, and shrinking. deprecate old hacks.

• add statistics gathering and display (see #30)

• better printing of Tuple

• improve Shrink.{array,list} (see #32)

• Change asserts to raise Invalid_arg (following the doc), and update doc

• Change Gen.{int_bount,int_range} to support up to 2^62

0.5.3.1

• fix regression in runner output (print results of collect)

• update the @since tags

0.5.3

• missing char in Gen.char (close #23)

• add test and doc to opam

• add small_list generator

• add ~long_factor to tests and runner, for long tests

• add more examples in readme, better doc for runners

• improved reporting when running qcheck tests

• add Test.get_count on test cells

0.5.2

• Add cli option for backtraces in QCheck_runner

• Add test case for raising exception

• Better handling of backtraces

• All tests now have a name

• Add step function called on each instance in a test

• make small_int a deprecated alias to small_nat

• add small_signed_int

• remove some warnings

• use safe-string, and fix related bug

• Add long tests options to QCheck_runner

• Add length specification for to_ounit2_test

• Added paragraph in README about long tests

0.5.1

• document exceptions

• add small_nat, change small_int semantics (close #10)

• add QCheck.assume_fail

• add QCheck.assume; explain preconditions a bit (close #9)

• Polish documentation

• Added quad support uniformly

0.5

• merge back from qtest: big changes in API, shrinking, use 'a arbitrary type that combines printer, generator, shrinker, etc. (see git log)

• merlin file

• reorganize sources, _oasis, .merlin, etc.

0.4

• bugfix in fix_fuel

• if verbose enabled, print each test case

• add QCheck.run_main

• QCheck_ounit.~::

• add (>:::)

• add qcheck_ounit ml{lib,dylib}

• trivial ounit integration

• make test_cell.name optional

• Arbitrary.fix_fuel(_gen): add a recursive case

• Arbitrary.fix_fuel_gen, similar to fix_fuel but threading a state bottom-up to make choices depend on the path

• Arbitrary.fail_fix to fail in a fixpoint

• helper cases for Arbitrary.fix_fuel

0.3

• get rid of submodule generator

• Arbitrary.fix_fuel, to generate complex recursive structures

• new combinators (infix map, applicative funs, shuffle)

• remove generator/Generator, and a deprecation warning

• output of printers of lists/arrays now parsable by ocaml toplevel

0.2

• integrate Gabriel Scherer's Generator into QCheck

• add |||

• add Prop.raises

• print the faulty instance in case of error (if a printer is available)

• some combinators for QCheck.Arbitrary

• QCheck.mk_test takes more arguments

0.1

• oasis based build system

• source files