/usr/lib/python3/dist-packages/behave/formatter/steps.py is in python3-behave 1.2.5-2.
This file is owned by root:root, with mode 0o644.
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"""
Provides a formatter that provides an overview of available step definitions
(step implementations).
"""
from behave.formatter.base import Formatter
from behave.step_registry import StepRegistry, registry
from behave.textutil import \
compute_words_maxsize, indent, make_indentation, text as _text
from behave import i18n
from operator import attrgetter
import inspect
from six.moves import zip
# -----------------------------------------------------------------------------
# CLASS: AbstractStepsFormatter
# -----------------------------------------------------------------------------
class AbstractStepsFormatter(Formatter):
"""
Provides a formatter base class that provides the common functionality
for formatter classes that operate on step definitions (implementations).
.. note::
Supports behave dry-run mode.
"""
step_types = ("given", "when", "then", "step")
def __init__(self, stream_opener, config):
super(AbstractStepsFormatter, self).__init__(stream_opener, config)
self.step_registry = None
self.current_feature = None
self.shows_location = config.show_source
def reset(self):
self.step_registry = None
self.current_feature = None
def discover_step_definitions(self):
if self.step_registry is None:
self.step_registry = StepRegistry()
for step_type in list(registry.steps.keys()):
step_definitions = tuple(registry.steps[step_type])
for step_definition in step_definitions:
step_definition.step_type = step_type
self.step_registry.steps[step_type] = step_definitions
# -- FORMATTER API:
def feature(self, feature):
self.current_feature = feature
if not self.step_registry:
# -- ONLY-ONCE:
self.discover_step_definitions()
def eof(self):
"""Called at end of a feature."""
self.current_feature = None
def close(self):
"""Called at end of test run."""
if not self.step_registry:
self.discover_step_definitions()
if self.step_registry:
# -- ENSURE: Output stream is open.
self.stream = self.open()
self.report()
# -- FINALLY:
self.close_stream()
# -- REPORT SPECIFIC-API:
def report(self):
raise NotImplementedError()
def describe_step_definition(self, step_definition, step_type=None):
if not step_type:
step_type = step_definition.step_type
assert step_type
return "@%s('%s')" % (step_type, step_definition.string)
# -----------------------------------------------------------------------------
# CLASS: StepsFormatter
# -----------------------------------------------------------------------------
class StepsFormatter(AbstractStepsFormatter):
"""
Provides formatter class that provides an overview
which step definitions are available.
EXAMPLE:
$ behave --dry-run -f steps features/
GIVEN STEP DEFINITIONS[21]:
Given a new working directory
Given I use the current directory as working directory
Given a file named "{filename}" with
...
Given a step passes
Given a step fails
WHEN STEP DEFINITIONS[14]:
When I run "{command}"
...
When a step passes
When a step fails
THEN STEP DEFINITIONS[45]:
Then the command should fail with returncode="{result:int}"
Then it should pass with
Then it should fail with
Then the command output should contain "{text}"
...
Then a step passes
Then a step fails
GENERIC STEP DEFINITIONS[13]:
* I remove the directory "{directory}"
* a file named "{filename}" exists
* a file named "{filename}" does not exist
...
* a step passes
* a step fails
.. note::
Supports behave dry-run mode.
"""
name = "steps"
description = "Shows step definitions (step implementations)."
shows_location = True
min_location_column = 40
# -- REPORT SPECIFIC-API:
def report(self):
self.report_steps_by_type()
def report_steps_by_type(self):
"""
Show an overview of the existing step implementations per step type.
"""
assert set(self.step_types) == set(self.step_registry.steps.keys())
language = self.config.lang or "en"
language_keywords = i18n.languages[language]
for step_type in self.step_types:
steps = list(self.step_registry.steps[step_type])
if step_type != "step":
steps.extend(self.step_registry.steps["step"])
if not steps:
continue
# -- PREPARE REPORT: For a step-type.
step_type_name = step_type.upper()
if step_type == "step":
step_keyword = "*"
step_type_name = "GENERIC"
else:
# step_keyword = step_type.capitalize()
keywords = language_keywords[step_type]
if keywords[0] == "*":
assert len(keywords) > 1
step_keyword = keywords[1]
else:
step_keyword = keywords[0]
steps_text = ["%s %s" % (step_keyword, step.string)
for step in steps]
if self.shows_location:
max_size = compute_words_maxsize(steps_text)
if max_size < self.min_location_column:
max_size = self.min_location_column
schema = " %-" + _text(max_size) + "s # %s\n"
else:
schema = " %s\n"
# -- REPORT:
message = "%s STEP DEFINITIONS[%s]:\n"
self.stream.write(message % (step_type_name, len(steps)))
for step, step_text in zip(steps, steps_text):
if self.shows_location:
self.stream.write(schema % (step_text, step.location))
else:
self.stream.write(schema % step_text)
self.stream.write("\n")
# -----------------------------------------------------------------------------
# CLASS: StepsDocFormatter
# -----------------------------------------------------------------------------
class StepsDocFormatter(AbstractStepsFormatter):
"""
Provides formatter class that shows the documentation of all registered
step definitions. The primary purpose is to provide help for a test writer.
EXAMPLE:
$ behave --dry-run -f steps.doc features/
@given('a file named "{filename}" with')
Function: step_a_file_named_filename_with()
Location: behave4cmd0/command_steps.py:50
Creates a textual file with the content provided as docstring.
@when('I run "{command}"')
Function: step_i_run_command()
Location: behave4cmd0/command_steps.py:80
Run a command as subprocess, collect its output and returncode.
@step('a file named "{filename}" exists')
Function: step_file_named_filename_exists()
Location: behave4cmd0/command_steps.py:305
Verifies that a file with this filename exists.
.. code-block:: gherkin
Given a file named "abc.txt" exists
When a file named "abc.txt" exists
...
.. note::
Supports behave dry-run mode.
"""
name = "steps.doc"
description = "Shows documentation for step definitions."
shows_location = True
shows_function_name = True
ordered_by_location = True
doc_prefix = make_indentation(4)
# -- REPORT SPECIFIC-API:
def report(self):
self.report_step_definition_docs()
self.stream.write("\n")
def report_step_definition_docs(self):
step_definitions = []
for step_type in self.step_types:
for step_definition in self.step_registry.steps[step_type]:
# step_definition.step_type = step_type
assert step_definition.step_type is not None
step_definitions.append(step_definition)
if self.ordered_by_location:
step_definitions = sorted(step_definitions,
key=attrgetter("location"))
for step_definition in step_definitions:
self.write_step_definition(step_definition)
def write_step_definition(self, step_definition):
step_definition_text = self.describe_step_definition(step_definition)
self.stream.write("%s\n" % step_definition_text)
doc = inspect.getdoc(step_definition.func)
func_name = step_definition.func.__name__
if self.shows_function_name and func_name not in ("step", "impl"):
self.stream.write(" Function: %s()\n" % func_name)
if self.shows_location:
self.stream.write(" Location: %s\n" % step_definition.location)
if doc:
doc = doc.strip()
self.stream.write(indent(doc, self.doc_prefix))
self.stream.write("\n")
self.stream.write("\n")
# -----------------------------------------------------------------------------
# CLASS: StepsCatalogFormatter
# -----------------------------------------------------------------------------
class StepsCatalogFormatter(StepsDocFormatter):
"""
Provides formatter class that shows the documentation of all registered
step definitions. The primary purpose is to provide help for a test writer.
In order to ease work for non-programmer testers, the technical details of
the steps (i.e. function name, source location) are ommited and the
steps are shown as they would apprear in a feature file (no noisy '@',
or '(', etc.).
Also, the output is sorted by step type (Given, When, Then)
Generic step definitions are listed with all three step types.
EXAMPLE:
$ behave --dry-run -f steps.catalog features/
Given a file named "{filename}" with
Creates a textual file with the content provided as docstring.
When I run "{command}"
Run a command as subprocess, collect its output and returncode.
Given a file named "{filename}" exists
When a file named "{filename}" exists
Then a file named "{filename}" exists
Verifies that a file with this filename exists.
.. code-block:: gherkin
Given a file named "abc.txt" exists
When a file named "abc.txt" exists
...
.. note::
Supports behave dry-run mode.
"""
name = "steps.catalog"
description = "Shows non-technical documentation for step definitions."
shows_location = False
shows_function_name = False
ordered_by_location = False
doc_prefix = make_indentation(4)
def describe_step_definition(self, step_definition, step_type=None):
if not step_type:
step_type = step_definition.step_type
assert step_type
desc = []
if step_type == 'step':
for step_type in self.step_types[:-1]:
text = "%5s %s" % (step_type.title(), step_definition.string)
desc.append(text)
else:
desc.append("%s %s" % (step_type.title(), step_definition.string))
return '\n'.join(desc)
# -----------------------------------------------------------------------------
# CLASS: StepsUsageFormatter
# -----------------------------------------------------------------------------
class StepsUsageFormatter(AbstractStepsFormatter):
"""
Provides formatter class that shows how step definitions are used by steps.
EXAMPLE:
$ behave --dry-run -f steps.usage features/
...
.. note::
Supports behave dry-run mode.
"""
name = "steps.usage"
description = "Shows how step definitions are used by steps."
doc_prefix = make_indentation(4)
min_location_column = 40
def __init__(self, stream_opener, config):
super(StepsUsageFormatter, self).__init__(stream_opener, config)
self.step_usage_database = {}
self.undefined_steps = []
def reset(self):
super(StepsUsageFormatter, self).reset()
self.step_usage_database = {}
self.undefined_steps = []
def get_step_type_for_step_definition(self, step_definition):
step_type = step_definition.step_type
if not step_type:
# -- DETERMINE STEP-TYPE FROM STEP-REGISTRY:
assert self.step_registry
for step_type, values in list(self.step_registry.steps.items()):
if step_definition in values:
return step_type
# -- OTHERWISE:
step_type = "step"
return step_type
def select_unused_step_definitions(self):
step_definitions = set()
for step_type, values in list(self.step_registry.steps.items()):
step_definitions.update(values)
used_step_definitions = set(self.step_usage_database.keys())
unused_step_definitions = step_definitions - used_step_definitions
return unused_step_definitions
def update_usage_database(self, step_definition, step):
matching_steps = self.step_usage_database.get(step_definition, None)
if matching_steps is None:
assert step_definition.step_type is not None
matching_steps = self.step_usage_database[step_definition] = []
# -- AVOID DUPLICATES: From Scenario Outlines
if not steps_contain(matching_steps, step):
matching_steps.append(step)
def update_usage_database_for_step(self, step):
step_definition = self.step_registry.find_step_definition(step)
if step_definition:
self.update_usage_database(step_definition, step)
# elif step not in self.undefined_steps:
elif not steps_contain(self.undefined_steps, step):
# -- AVOID DUPLICATES: From Scenario Outlines
self.undefined_steps.append(step)
def update_usage_database_for_feature(self, feature):
# -- PROCESS BACKGROUND (if exists): Use Background steps only once.
if feature.background:
for step in feature.background.steps:
self.update_usage_database_for_step(step)
# -- PROCESS SCENARIOS: Without background steps.
for scenario in feature.walk_scenarios():
for step in scenario.steps:
self.update_usage_database_for_step(step)
# -- FORMATTER API:
def feature(self, feature):
super(StepsUsageFormatter, self).feature(feature)
self.update_usage_database_for_feature(feature)
# -- REPORT API:
def report(self):
self.report_used_step_definitions()
self.report_unused_step_definitions()
self.report_undefined_steps()
self.stream.write("\n")
# -- REPORT SPECIFIC-API:
def report_used_step_definitions(self):
# -- STEP: Used step definitions.
# ORDERING: Sort step definitions by file location.
get_location = lambda x: x[0].location
step_definition_items = list(self.step_usage_database.items())
step_definition_items = sorted(step_definition_items, key=get_location)
for step_definition, steps in step_definition_items:
stepdef_text = self.describe_step_definition(step_definition)
steps_text = [" %s %s" % (step.keyword, step.name)
for step in steps]
steps_text.append(stepdef_text)
max_size = compute_words_maxsize(steps_text)
if max_size < self.min_location_column:
max_size = self.min_location_column
schema = "%-" + _text(max_size) + "s # %s\n"
self.stream.write(schema % (stepdef_text, step_definition.location))
schema = "%-" + _text(max_size) + "s # %s\n"
for step, step_text in zip(steps, steps_text):
self.stream.write(schema % (step_text, step.location))
self.stream.write("\n")
def report_unused_step_definitions(self):
unused_step_definitions = self.select_unused_step_definitions()
if not unused_step_definitions:
return
# -- STEP: Prepare report for unused step definitions.
# ORDERING: Sort step definitions by file location.
get_location = lambda x: x.location
step_definitions = sorted(unused_step_definitions, key=get_location)
step_texts = [self.describe_step_definition(step_definition)
for step_definition in step_definitions]
max_size = compute_words_maxsize(step_texts)
if max_size < self.min_location_column-2:
max_size = self.min_location_column-2
# -- STEP: Write report.
schema = " %-" + _text(max_size) + "s # %s\n"
self.stream.write("UNUSED STEP DEFINITIONS[%d]:\n" % len(step_texts))
for step_definition, step_text in zip(step_definitions, step_texts):
self.stream.write(schema % (step_text, step_definition.location))
def report_undefined_steps(self):
if not self.undefined_steps:
return
# -- STEP: Undefined steps.
undefined_steps = sorted(self.undefined_steps,
key=attrgetter("location"))
steps_text = [" %s %s" % (step.keyword, step.name)
for step in undefined_steps]
max_size = compute_words_maxsize(steps_text)
if max_size < self.min_location_column:
max_size = self.min_location_column
self.stream.write("\nUNDEFINED STEPS[%d]:\n" % len(steps_text))
schema = "%-" + _text(max_size) + "s # %s\n"
for step, step_text in zip(undefined_steps, steps_text):
self.stream.write(schema % (step_text, step.location))
# -----------------------------------------------------------------------------
# UTILITY FUNCTIONS:
# -----------------------------------------------------------------------------
def steps_contain(steps, step):
for other_step in steps:
if step == other_step and step.location == other_step.location:
# -- NOTE: Step comparison does not take location into account.
return True
# -- OTHERWISE: Not contained yet (or step in other location).
return False
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