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@sequential
Feature: Capture stderr output and show it in case of failures/errors
As a tester
To simplify failure diagnostics
I want that:
- captured output is displayed only when failures/errors occur
- all output is displayed when capture is disabled
(but may clutter up formatter output)
@setup
Scenario: Test Setup
Given a new working directory
And a file named "features/steps/stderr_steps.py" with:
"""
from behave import step
import sys
@step('a step writes "{text}" to stderr and passes')
def step_writes_to_stderr_and_passes(context, text):
sys.stderr.write("stderr:%s;\n" % text)
@step('a step writes "{text}" to stderr and fails')
def step_writes_to_stderr_and_fails(context, text):
sys.stderr.write("stderr:%s;\n" % text)
assert False, "XFAIL, step with: %s;" % text
"""
And a file named "features/capture_stderr.example1.feature" with:
"""
Feature:
Scenario:
Given a step writes "Alice" to stderr and passes
When a step writes "Bob" to stderr and passes
Then a step writes "Charly" to stderr and passes
"""
And a file named "features/capture_stderr.example2.feature" with:
"""
Feature:
Scenario:
Given a step writes "Alice" to stderr and passes
When a step writes "Bob" to stderr and fails
Then a step writes "Charly" to stderr and fails
"""
@capture
Scenario: Captured output is suppressed if scenario passes (CASE 1: --capture)
When I run "behave -f plain -T --capture features/capture_stderr.example1.feature"
Then it should pass
And the command output should contain:
"""
Feature:
Scenario:
Given a step writes "Alice" to stderr and passes ... passed
When a step writes "Bob" to stderr and passes ... passed
Then a step writes "Charly" to stderr and passes ... passed
"""
But the command output should not contain:
"""
stderr:Alice;
"""
@capture
Scenario: Captured output is suppressed if scenario passes (CASE 2: --capture-stderr)
When I run "behave -f plain -T --capture-stderr features/capture_stderr.example1.feature"
Then it should pass
And the command output should contain:
"""
Feature:
Scenario:
Given a step writes "Alice" to stderr and passes ... passed
When a step writes "Bob" to stderr and passes ... passed
Then a step writes "Charly" to stderr and passes ... passed
"""
But the command output should not contain:
"""
stderr:Alice;
"""
@capture
Scenario: Captured output is shown up to first failure if scenario fails (CASE 1: --capture)
When I run "behave -f plain -T --capture features/capture_stderr.example2.feature"
Then it should fail with:
"""
0 scenarios passed, 1 failed, 0 skipped
1 step passed, 1 failed, 1 skipped, 0 undefined
"""
And the command output should contain:
"""
Feature:
Scenario:
Given a step writes "Alice" to stderr and passes ... passed
When a step writes "Bob" to stderr and fails ... failed
Assertion Failed: XFAIL, step with: Bob;
Captured stderr:
stderr:Alice;
stderr:Bob;
"""
But the command output should not contain:
"""
stderr:Charly;
"""
@capture
Scenario: Captured output is shown if scenario fails up to first failure (CASE 2: --capture-stderr)
When I run "behave -f plain -T --capture-stderr features/capture_stderr.example2.feature"
Then it should fail with:
"""
0 scenarios passed, 1 failed, 0 skipped
1 step passed, 1 failed, 1 skipped, 0 undefined
"""
And the command output should contain:
"""
Feature:
Scenario:
Given a step writes "Alice" to stderr and passes ... passed
When a step writes "Bob" to stderr and fails ... failed
Assertion Failed: XFAIL, step with: Bob;
Captured stderr:
stderr:Alice;
stderr:Bob;
"""
But the command output should not contain:
"""
stderr:Charly;
"""
@no_capture
Scenario: All output is shown when --no-capture-stderr is used and all steps pass (CASE 1)
When I run "behave -f plain -T --no-capture-stderr features/capture_stderr.example1.feature"
Then it should pass
And the command output should contain:
"""
stderr:Alice;
stderr:Bob;
stderr:Charly;
"""
And the command output should contain:
"""
Feature:
Scenario:
Given a step writes "Alice" to stderr and passes ... passed
When a step writes "Bob" to stderr and passes ... passed
Then a step writes "Charly" to stderr and passes ... passed
"""
@no_capture
Scenario: All output is shown up to first failing step when --no-capture-stderr is used (CASE 2)
When I run "behave -f plain -T --no-capture-stderr features/capture_stderr.example2.feature"
Then it should fail with:
"""
0 scenarios passed, 1 failed, 0 skipped
1 step passed, 1 failed, 1 skipped, 0 undefined
"""
And the command output should contain:
"""
Feature:
Scenario:
Given a step writes "Alice" to stderr and passes ... passed
When a step writes "Bob" to stderr and fails ... failed
Assertion Failed: XFAIL, step with: Bob;
"""
And the command output should contain:
"""
stderr:Alice;
stderr:Bob;
"""
But the command output should not contain:
"""
stderr:Charly;
"""
|
