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Randomizing Cucumber outlines
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Feature: Feature 1 | |
Scenario: A normal test | |
* foo | |
@Random(50) | |
Scenario Outline: | |
* foo | |
Examples: | |
| values | | |
| 1 | | |
| 2 | | |
| 3 | | |
| 4 | | |
| 5 | | |
| 6 | | |
| 7 | | |
| 8 | | |
| 9 | | |
| 0 | |
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Feature: Feature 2 | |
Scenario Outline: | |
* foo | |
@Random(20) | |
Examples: | |
| values | | |
| 1 | | |
| 2 | | |
| 3 | | |
| 4 | | |
| 5 | | |
| 6 | | |
| 7 | | |
| 8 | | |
| 9 | | |
| 0 | | |
@Random(100) | |
Examples: | |
| values | | |
| a | | |
| b | |
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require 'cucumber_analytics' | |
def choose_randomly(tag, rows) | |
percent = tag[/\d+/].to_i | |
percent /= 100.0 | |
sample_size = (rows.count * percent).to_i | |
rows.sample(sample_size) | |
end | |
your_test_directory = Dir.pwd | |
world = CucumberAnalytics::World | |
directory = CucumberAnalytics::Directory.new(your_test_directory) | |
# Written for clarity, not efficiency. Could certainly use fewer collection iterations | |
all_tests = world.tests_in(directory) | |
all_outlines = all_tests.select { |test| test.is_a?(CucumberAnalytics::Outline) } | |
all_example_tables = all_outlines.collect { |outline| outline.examples }.flatten | |
randomized_example_tables = all_example_tables.select { |example| example.all_tags.any? { |tag| tag =~ /Random\(\d+\)/ } } | |
# Now that we've got all of the example rows, we need to randomly choose some of them to run | |
random_outline_rows = Array.new.tap { |rows| | |
randomized_example_tables.each do |example| | |
randomizer_tag = example.all_tags.select { |tag| tag =~ /Random\(\d+\)/ }.first # Assuming just one applicable randomizing tag | |
example_rows = example.row_elements | |
example_rows.shift # Need to get rid of the header row | |
rows << choose_randomly(randomizer_tag, example_rows) | |
end | |
}.flatten | |
# And then translate them into the familiar FILE:LINE form | |
final_runnable_tests = random_outline_rows.collect { |row| "#{row.get_ancestor(:feature_file).path}:#{row.source_line}" } | |
# Use them however you want at this point! Perhaps write them to a file and run them all? | |
File.open('my_random_tests.txt', 'w') { |file| | |
file.puts final_runnable_tests | |
} | |
system('cucumber @my_random_tests.txt') |
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