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Changelog

0.23.1 - 2024-02-28

  • Fix not respecting allow_x00 and codec arguments for values in some schemas

0.23.0 - 2023-09-24

  • Add new allow_x00= and codec= arguments to from_schema(), so that you can control generated strings more precisely.
  • Require hypothesis 6.84+ and jsonschema 4.18+, to support new features and avoid deprecations.
  • Requires Python 3.8 or later (3.7 is end-of-life), tested on Python 3.11

0.22.1 - 2023-02-07

  • Cache JSON Schema validators by their schema's JSON representation

0.22.0 - 2021-12-15

  • never generate trailing newlines for regex patterns ending in $ (allowed by Python, but not by JSON Schema)

0.21.0 - 2021-10-03

  • reduced filtering for object keys (#88)
  • updated to jsonschema >= 4.0.0 (#89); though support for Draft 2019-09 and 2020-12 will take longer
  • requires Python 3.7+, a few months ahead of the 3.6 end of life date

0.20.1 - 2021-06-03

  • improved handling for fractional multipleOf values

0.20.0 - 2021-06-02

  • Allow custom_formats for known string formats (#83)

0.19.2 - 2021-05-17

  • Fix support date and time formats (#79)

0.19.1 - 2021-03-23

  • PyPy support (#77)

0.19.0 - 2021-01-06

  • Generate empty lists when maxItems > 0 but no elements are allowed (#75)
  • Correct handling of regex patterns which are invalid in Python (#75)

0.18.2 - 2020-11-22

  • Remove internal caching due to hash collisions (#71)
  • Improve performance for conditional keywords

0.18.1 - 2020-11-21

  • Canonicalise anyOf special cases when all subschemas have only the type keyword

0.18.0 - 2020-09-10

  • Performance improvements from careful caching (#62)
  • Use a validator that corresponds to the input schema draft version (#66)

0.17.4 - 2020-08-26

  • fixed string schemas with different format keywords (#63)

0.17.3 - 2020-07-17

  • improved handling of overlapping items keywords (#58)

0.17.2 - 2020-07-16

  • improved handling of overlapping dependencies keywords (#57)

0.17.1 - 2020-07-16

  • fixed an internal bug where results incorrectly depended on iteration order (#59)

0.17.0 - 2020-07-16

  • Adds a custom_formats keyword argument to from_schema(), so that you can specify a strategy to generate strings for custom formats like credit card numbers. Thanks to Dmitry Dygalo, whose sponsorship motivated me to add the feature!

0.16.2 - 2020-07-12

  • Substantial performance gains for some schemas, via improved handling of the contains, not, anyOf, and if/then/else keywords

0.16.1 - 2020-06-15

  • Performance improvement for object schemas with additionalProperties: false (issue #55)

0.16.0 - 2020-06-07

  • Performance improvement for schemas with non-validation keys (such as description)
  • Errors from e.g. invalid schemas are deferred from import time to become failing tests
  • Improved handling for some schemas with overlapping non-integer multipleOf keys

0.15.1 - 2020-06-05

  • Significantly improved efficiency of certain patternProperties schemas.

0.15.0 - 2020-06-04

  • Fixed several bugs related to interactions between properties, patternProperties, and additionalProperties. As a result some strategies will be more efficient than before and others less; and further gains seem likely.

0.14.0 - 2020-06-01

  • Improved strategy for json-pointer and relative-json-pointer string formats
  • Improved generation of arrays with rarely-satisfied contains constraints
  • Improved canonicalisation and merging of allOf schemas

0.13.1 - 2020-05-22

  • Performance improvement in calculating schema intersections

0.13.0 - 2020-05-20

  • Improved canonicalisation of uniqueItems: false case
  • Improved canonicalisation of numeric schemas
  • Reuse jsonschema validators during canonicalisation (performance improvement)

0.12.1 - 2020-04-14

  • Added a strategy for the "color" format
  • Only apply string length filter when needed (small performance improvement)

0.12.0 - 2020-04-08

  • Fixed error in resolution of certain $ref\ s
  • Improved canonicalisation of anyOf and contains keys

0.11.1 - 2020-01-27

  • Requires Hypothesis >= 5.3.0, for improved IP address strategies
  • Better canoncialisation of array schemata

0.11.0 - 2020-01-26

  • Resolve local, non-recursive references via the $ref keyword.

This is the largest feature in a while, and for some schemata it is a breaking change. It's also a fundamental part of the spec, so I'm OK with that!

Note that hypothesis-jsonschema will raise an explicit error rather than fetching a remote resource via URI. If think your tests really should hit the network, get in touch and we can discuss adding an off-by-default option for this.

0.10.3 - 2020-01-26

  • Improved canonicalisation of conflicting minProperties and maxProperties
  • Explictly reject draft-03 schemata, which are not supported
  • More specific type annotations for from_schema
  • Better performance for certain object schemata

0.10.2 - 2020-01-09

  • enum schema now shrink to a minimal example rather than the first value listed. This also makes the internals more efficient in certain rare cases.
  • Improved handling of bounded numeric sub-schemas

0.10.1 - 2019-12-28

  • Improved handling of non-integer numeric schemas with multipleOf
  • Improved handling of not in many common cases
  • Improved handling of object schemas with dependencies on required keys
  • Fixed cases where propertyNames bans a required key

0.10.0 - 2019-12-26

  • Improved handling of numeric schemas, especially integer schemas with multipleOf.
  • Bump the minimum version of Hypothesis to ensure that all users have the unique array bugfix from 0.9.12.
  • Fixed a bug where array schemas with an array of items, additionalItems: false, and a maxItems larger than the number of allowed items would resolve to an invalid strategy.

0.9.13 - 2019-12-18

  • Improved internal handling of schemas for arrays which must always be length-zero.

0.9.12 - 2019-12-01

  • Fixed RFC 3339 strings generation. Thanks to Dmitry Dygalo for the patch!
  • Fixed a bug where equal floats and ints could be generated in a unique array, even though JSONSchema considers 0 === 0.0 (though this may also require an upstream fix to work...)

0.9.11 - 2019-11-30

  • Fixed a bug where objects which could have either zero or one properties would always be generated with zero.

0.9.10 - 2019-11-27

  • Updated project metadata and development tooling
  • Supported and tested on Python 3.8

0.9.9 - 2019-10-02

  • Correct handling of {"items": [...], "uniqueItems": true"} schemas

0.9.8 - 2019-08-24

  • Corrected handling of the "format" keyword with unknown values - custom values are allowed by the spec and should be treated as annotations (i.e. ignored).

0.9.7 - 2019-08-15

  • Improved canonicalisation, especially for deeply nested schemas.

0.9.6 - 2019-08-02

  • A performance optimisation for null and boolean schema, which relies on a bugfix in jsonschema >= 3.0.2.

0.9.5 - 2019-08-02

  • Improved handling of the contains keyword for arrays

0.9.4 - 2019-07-01

  • Improved canonicalisation and merging for a wide range of schemas, which as usual unlocks significant optimisations and performance improvements for cases where they apply.

0.9.3 - 2019-06-13

  • Future-proofed canonicalisation of type key.

0.9.2 - 2019-05-23

  • Better internal canonicalization, which makes current and future optimisations more widely applicable.
  • Yet another fix, this time for negative zero and numeric bouds as floats with sub-integer precision. IEEE 754 is tricky, even with Hypothesis!
  • Fixes handling of enum with elements disallowed by base schema, handling of if-then-else with a base schema, and handling of regex patterns that are invalid in Python.

0.9.1 - 2019-05-22

  • Fix the fix for numeric schemas with multipleOf and exclusive bounds.

0.9.0 - 2019-05-21

  • Supports merging schemas for overlapping patternProperties, a significant performance improvement in most cases.
  • If the "type" key is missing, it is now inferred from other keys rather than always defaulting to "object".
  • Fixed handling of complicated numeric bounds.

0.8.2 - 2019-05-21

  • Improve performance for object schemas where the min and max size can be further constrained from properties and propertyNames attributes.

0.8.1 - 2019-03-24

  • Supports draft-04 schemata with the latest version of jsonschema

0.8.0 - 2019-03-23

  • Further improved support for allOf, oneOf, and anyOf with base schemata
  • Added support for dependencies
  • Handles overlapping patternProperties

0.7.0 - 2019-03-21

  • Now requires jsonschema >= 3.0
  • Improved support for allOf, oneOf, and propertyNames
  • Supports schemata with "type": [an array of types]
  • Warning-free on Hypothesis 4.11

0.6.1 - 2019-02-23

  • Fix continuous delivery configuration (before the latent bug manifested)

0.6.0 - 2019-02-23

  • Support for conditional subschemata, i.e. the if, then, else keywords, and the anyOf, allOf, oneOf, and not keywords.

0.5.0 - 2019-02-22

  • Works with jsonschema 3.0 pre-release
  • Initial support for draft06 and draft07

0.4.2 - 2019-02-14

  • Dropped dependency on canonicaljson
  • Less warnings on Python 3.7

0.4.1 - 2019-02-06

  • Relicensed under the more permissive Mozilla Public License, like Hypothesis
  • Requires Hypothesis version 4.0 or later
  • Fixed an array bounds bug with maxItems and contains keywords

0.4.0 - 2018-11-25

Supports string formats (email, datetime, etc) and simple use of the "contains" keyword for arrays.

0.3.0 - 2018-11-25

Good support for all basic types. MVP.

0.2.0 - 2018-11-24

Inference for null, boolean, string, and numeric types.

0.1.0 - 2018-11-21

Stake in the ground (generate arbitrary JSON and filter it!)