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|
# frozen_string_literal: false
require "test/unit"
require "coverage"
require "tmpdir"
require "envutil"
class TestCoverage < Test::Unit::TestCase
def test_result_without_start
assert_in_out_err(%w[-rcoverage], <<-"end;", [], /coverage measurement is not enabled/)
Coverage.result
p :NG
end;
end
def test_peek_result_without_start
assert_in_out_err(%w[-rcoverage], <<-"end;", [], /coverage measurement is not enabled/)
Coverage.peek_result
p :NG
end;
end
def test_result_with_nothing
assert_in_out_err(%w[-rcoverage], <<-"end;", ["{}"], [])
Coverage.start
p Coverage.result
end;
end
def test_coverage_running?
assert_in_out_err(%w[-rcoverage], <<-"end;", ["false", "true", "true", "false"], [])
p Coverage.running?
Coverage.start
p Coverage.running?
Coverage.peek_result
p Coverage.running?
Coverage.result
p Coverage.running?
end;
end
def test_coverage_snapshot
Dir.mktmpdir {|tmp|
Dir.chdir(tmp) {
File.open("test.rb", "w") do |f|
f.puts <<-EOS
def coverage_test_snapshot
:ok
end
EOS
end
assert_in_out_err(%w[-rcoverage], <<-"end;", ["[1, 0, nil]", "[1, 1, nil]", "[1, 1, nil]"], [])
Coverage.start
tmp = Dir.pwd
require tmp + "/test.rb"
cov = Coverage.peek_result[tmp + "/test.rb"]
coverage_test_snapshot
cov2 = Coverage.peek_result[tmp + "/test.rb"]
p cov
p cov2
p Coverage.result[tmp + "/test.rb"]
end;
}
}
end
def test_restarting_coverage
Dir.mktmpdir {|tmp|
Dir.chdir(tmp) {
tmp = Dir.pwd
File.open("test.rb", "w") do |f|
f.puts <<-EOS
def coverage_test_restarting
:ok
end
EOS
end
File.open("test2.rb", "w") do |f|
f.puts <<-EOS
itself
EOS
end
exp1 = { "#{tmp}/test.rb" => [1, 0, nil] }.inspect
exp2 = {}.inspect
exp3 = { "#{tmp}/test2.rb" => [1] }.inspect
assert_in_out_err(%w[-rcoverage], <<-"end;", [exp1, exp2, exp3], [])
Coverage.start
tmp = Dir.pwd
require tmp + "/test.rb"
p Coverage.result
# Restart coverage but '/test.rb' is required before restart,
# so coverage is not recorded.
Coverage.start
coverage_test_restarting
p Coverage.result
# Restart coverage and '/test2.rb' is required after restart,
# so coverage is recorded.
Coverage.start
require tmp + "/test2.rb"
p Coverage.result
end;
}
}
end
def test_big_code
Dir.mktmpdir {|tmp|
Dir.chdir(tmp) {
File.open("test.rb", "w") do |f|
f.puts "__id__\n" * 10000
f.puts "def ignore(x); end"
f.puts "ignore([1"
f.puts "])"
end
assert_in_out_err(%w[-rcoverage], <<-"end;", ["10003"], [])
Coverage.start
tmp = Dir.pwd
require tmp + '/test.rb'
p Coverage.result[tmp + '/test.rb'].size
end;
}
}
end
def test_nonpositive_linenumber
bug12517 = '[ruby-core:76141] [Bug #12517]'
assert_in_out_err(%w[-W0 -rcoverage], <<-"end;", ['{"<compiled>"=>[nil]}'], [], bug12517)
Coverage.start
RubyVM::InstructionSequence.compile(":ok", nil, "<compiled>", 0)
p Coverage.result
end;
end
def test_eval
bug13305 = '[ruby-core:80079] [Bug #13305]'
Dir.mktmpdir {|tmp|
Dir.chdir(tmp) {
File.open("test.rb", "w") do |f|
f.puts 'REPEATS = 400'
f.puts 'def add_method(target)'
f.puts ' REPEATS.times do'
f.puts ' target.class_eval(<<~RUBY, __FILE__, __LINE__ + 1)'
f.puts ' def foo'
f.puts ' #{"\n" * rand(REPEATS)}'
f.puts ' end'
f.puts ' 1'
f.puts ' RUBY'
f.puts ' end'
f.puts 'end'
end
assert_in_out_err(%w[-W0 -rcoverage], <<-"end;", ["[1, 1, 1, 400, nil, nil, nil, nil, nil, nil, nil]"], [], bug13305)
Coverage.start
tmp = Dir.pwd
require tmp + '/test.rb'
add_method(Class.new)
p Coverage.result[tmp + "/test.rb"]
end;
}
}
end
def test_nocoverage_optimized_line
assert_ruby_status(%w[], "#{<<-"begin;"}\n#{<<-'end;'}")
begin;
def foo(x)
x # optimized away
nil
end
end;
end
def test_branch_coverage_for_if_statement
Dir.mktmpdir {|tmp|
Dir.chdir(tmp) {
File.open("test.rb", "w") do |f|
f.puts 'def foo(x)'
f.puts ' if x == 0'
f.puts ' 0'
f.puts ' else'
f.puts ' 1'
f.puts ' end'
f.puts 'end'
f.puts 'foo(0)'
f.puts 'foo(0)'
f.puts 'foo(1)'
end
assert_in_out_err(%w[-W0 -rcoverage], <<-"end;", ["{:branches=>{[:if, 0, 2]=>{[:then, 1, 3]=>2, [:else, 2, 5]=>1}}}"], [])
ENV["COVERAGE_EXPERIMENTAL_MODE"] = "true"
Coverage.start(branches: true)
tmp = Dir.pwd
require tmp + '/test.rb'
p Coverage.result[tmp + "/test.rb"]
end;
}
}
end
def test_branch_coverage_for_while_statement
Dir.mktmpdir {|tmp|
Dir.chdir(tmp) {
File.open("test.rb", "w") do |f|
f.puts 'x = 3'
f.puts 'while x > 0'
f.puts ' x -= 1'
f.puts 'end'
f.puts 'until x == 10'
f.puts ' x += 1'
f.puts 'end'
end
assert_in_out_err(%w[-W0 -rcoverage], <<-"end;", ["{:branches=>{[:while, 0, 2]=>{[:body, 1, 3]=>3}, [:until, 2, 5]=>{[:body, 3, 6]=>10}}}"], [])
ENV["COVERAGE_EXPERIMENTAL_MODE"] = "true"
Coverage.start(branches: true)
tmp = Dir.pwd
require tmp + '/test.rb'
p Coverage.result[tmp + "/test.rb"]
end;
}
}
end
end
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