Cucumber Tag Expressions
Readable boolean expressions to select features and scenarios marked with tags in Gherkin
# -- SIMPLE TAG-EXPRESSION EXAMPLES:
@a and @b
@a or @b
not @a
# -- MORE TAG-EXPRESSION EXAMPLES:
@a and not @b
(@a or @b) and not @c
Getting Started
Cucumber Tag Expressions is available as cucumber-tag-expressions on PyPI.
pip install cucumber-tag-expressions
Parse tag expressions and evaluate them against a set of tags.
>>> from cucumber_tag_expressions import parse
# Tagged with @fast
>>> fast = parse("@fast")
>>> fast({"@fast", "@wip"})
True
>>> fast({"@performance", "@slow"})
False
# Tagged with @wip and not @slow
>>> wip_not_slow = parse("@wip and not @slow")
>>> wip_not_slow({"@wip", "@home"})
True
>>> wip_not_slow({"wet", "warm", "raining"})
False
# Tagged with both `@fast` and `@integration`
>>> fast_integration = parse("@integration and @fast")
>>> fast_integration({"@integration", "@fast", "@other"})
True
>>> fast_integration({"@system", "@fast"})
False
# Tagged with either @login or @registration
>>> auth_pages = parse("@login or @registration")
>>> auth_pages({"@account", "@login"})
True
>>> auth_pages({"@admin", "@account"})
False
Test Runner Usage
A gherkin test runner (such as behave) uses tag expressions to select scenarios to run.
# -- TAG-EXPRESSION: @one and @two
# EXPECTED: Selects and runs scenario "Three".
$ my_cucumber_test_runner --tags="@one and @two" features/example.feature
...
# -- TAG-EXPRESSION: @one or @two
# EXPECTED: Selects and runs scenarios "One", "Two" and "Three".
$ my_cucumber_test_runner --tags="@one or @two" features/example.feature
...
Such as using the following feature file.
# -- FILE: features/example.feature
Feature: Tag expressions example
@one
Scenario: One
Given a step passes
@two
Scenario: Two
Given another step passes
@one @two
Scenario: Three
Given some step passes
Scenario: Four
Given another step passes
3 maintainers
Metadata
3 maintainers
Release files for cucumber-tag-expressions 11.0.1
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| File | Size | Uploaded | Provenance | |
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| cucumber_tag_expressions-11.0.1-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 18.4 kB
Release files / cucumber_tag_expressions-11.0.1.tar.gz
| Download URL | cucumber_tag_expressions-11.0.1.tar.gz |
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| Size | 8.6 kB |
| Tags | Source |
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Release files / cucumber_tag_expressions-11.0.1-py3-none-any.whl
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| Size | 9.8 kB |
| Tags | Python 3 |
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