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# frozen_string_literal: true
require "helper"
require "coverage"
describe SimpleCov do
describe ".result" do
before do
SimpleCov.clear_result
allow(Coverage).to receive(:result).once.and_return({})
end
context "with merging disabled" do
before do
allow(SimpleCov).to receive(:use_merging).once.and_return(false)
expect(SimpleCov).to_not receive(:wait_for_other_processes)
end
context "when not running" do
before do
allow(SimpleCov).to receive(:running).and_return(false)
end
it "returns nil" do
expect(SimpleCov.result).to be_nil
end
end
context "when running" do
before do
allow(SimpleCov).to receive(:running).and_return(true, false)
end
it "uses the result from Coverage" do
expect(Coverage).to receive(:result).once.and_return(__FILE__ => [0, 1])
expect(SimpleCov.result.filenames).to eq [__FILE__]
end
it "adds not-loaded-files" do
expect(SimpleCov).to receive(:add_not_loaded_files).once.and_return({})
SimpleCov.result
end
it "doesn't store the current coverage" do
expect(SimpleCov::ResultMerger).not_to receive(:store_result)
SimpleCov.result
end
it "doesn't merge the result" do
expect(SimpleCov::ResultMerger).not_to receive(:merged_result)
SimpleCov.result
end
it "caches its result" do
result = SimpleCov.result
expect(SimpleCov.result).to be(result)
end
end
end
context "with merging enabled" do
let(:the_merged_result) { double }
before do
allow(SimpleCov).to receive(:use_merging).once.and_return(true)
allow(SimpleCov::ResultMerger).to receive(:store_result).once
allow(SimpleCov::ResultMerger).to receive(:merged_result).once.and_return(the_merged_result)
expect(SimpleCov).to receive(:wait_for_other_processes)
end
context "when not running" do
before do
allow(SimpleCov).to receive(:running).and_return(false)
end
it "merges the result" do
expect(SimpleCov.result).to be(the_merged_result)
end
end
context "when running" do
before do
allow(SimpleCov).to receive(:running).and_return(true, false)
end
it "uses the result from Coverage" do
expect(Coverage).to receive(:result).once.and_return({})
SimpleCov.result
end
it "adds not-loaded-files" do
expect(SimpleCov).to receive(:add_not_loaded_files).once.and_return({})
SimpleCov.result
end
it "stores the current coverage" do
expect(SimpleCov::ResultMerger).to receive(:store_result).once
SimpleCov.result
end
it "merges the result" do
expect(SimpleCov.result).to be(the_merged_result)
end
it "caches its result" do
result = SimpleCov.result
expect(SimpleCov.result).to be(result)
end
end
end
end
describe ".exit_status_from_exception" do
context "when no exception has occurred" do
it "returns nil" do
expect(SimpleCov.exit_status_from_exception).to eq(nil)
end
end
context "when a SystemExit has occurred" do
it "returns the SystemExit status" do
raise SystemExit, 1
rescue SystemExit
expect(SimpleCov.exit_status_from_exception).to eq(1)
end
end
context "when a non SystemExit occurs" do
it "return SimpleCov::ExitCodes::EXCEPTION" do
raise "no system exit"
rescue StandardError
expect(SimpleCov.exit_status_from_exception).to eq(SimpleCov::ExitCodes::EXCEPTION)
end
end
end
describe ".process_result" do
let(:result) { SimpleCov::Result.new({}) }
context "when minimum coverage is 100%" do
before do
allow(SimpleCov).to receive(:minimum_coverage).and_return(line: 100)
allow(SimpleCov).to receive(:result?).and_return(true)
end
context "when actual coverage is almost 100%" do
before do
allow(result).to receive(:coverage_statistics).and_return(line: double("statistics", percent: 100 * 32_847.0 / 32_848))
end
it "return SimpleCov::ExitCodes::MINIMUM_COVERAGE" do
expect(
SimpleCov.process_result(result)
).to eq(SimpleCov::ExitCodes::MINIMUM_COVERAGE)
end
end
context "when actual coverage is exactly 100%" do
before do
allow(result).to receive(:covered_percent).and_return(100.0)
allow(result).to receive(:coverage_statistics).and_return(
line: double("statistics", percent: 100.0)
)
allow(result).to receive(:covered_percentages).and_return([])
allow(SimpleCov::LastRun).to receive(:read).and_return(nil)
end
it "return SimpleCov::ExitCodes::SUCCESS" do
expect(
SimpleCov.process_result(result)
).to eq(SimpleCov::ExitCodes::SUCCESS)
end
end
context "branch coverage" do
before do
allow(SimpleCov).to receive(:minimum_coverage).and_return(branch: 90)
allow(SimpleCov).to receive(:result?).and_return(true)
end
it "errors out when the coverage is too low" do
allow(result).to receive(:coverage_statistics).and_return(branch: double("statistics", percent: 89.99))
expect(
SimpleCov.process_result(result)
).to eq(SimpleCov::ExitCodes::MINIMUM_COVERAGE)
end
end
end
end
describe ".collate" do
let(:resultset1) do
{source_fixture("sample.rb") => {"lines" => [nil, 1, 1, 1, nil, nil, 1, 1, nil, nil]}}
end
let(:resultset2) do
{source_fixture("sample.rb") => {"lines" => [1, nil, 1, 1, nil, nil, 1, 1, nil, nil]}}
end
let(:resultset_path) { SimpleCov::ResultMerger.resultset_path }
let(:resultset_folder) { File.dirname(resultset_path) }
let(:merged_result) do
{
"result1, result2" => {
"coverage" => {
source_fixture("sample.rb") => {
"lines" => [1, 1, 2, 2, nil, nil, 2, 2, nil, nil]
}
}
}
}
end
let(:collated) do
JSON.parse(File.read(resultset_path)).transform_values { |v| v.reject { |k| k == "timestamp" } }
end
context "when no files to be merged" do
it "shows an error message" do
expect do
glob = Dir.glob("#{resultset_folder}/*.final", File::FNM_DOTMATCH)
SimpleCov.collate glob
end.to raise_error("There are no reports to be merged")
end
end
context "when files to be merged" do
before do
expect(SimpleCov).to receive(:run_exit_tasks!)
end
context "and a single report to be merged" do
before do
create_mergeable_report("result1", resultset1)
end
after do
clear_mergeable_reports
end
it "creates a merged report identical to the original" do
glob = Dir.glob("#{resultset_folder}/*.final", File::FNM_DOTMATCH)
SimpleCov.collate glob
expected = {"result1" => {"coverage" => resultset1}}
expect(collated).to eq(expected)
end
end
context "and multiple reports to be merged" do
before do
create_mergeable_report("result1", resultset1)
create_mergeable_report("result2", resultset2)
end
after do
clear_mergeable_reports
end
it "creates a merged report" do
glob = Dir.glob("#{resultset_folder}/*.final", File::FNM_DOTMATCH)
SimpleCov.collate glob
expect(collated).to eq(merged_result)
end
end
context "and multiple reports to be merged, one of them outdated" do
before do
create_mergeable_report("result1", resultset1)
create_mergeable_report("result2", resultset2, outdated: true)
end
after do
clear_mergeable_reports
end
it "ignores timeout by default creating a report with all values" do
glob = Dir.glob("#{resultset_folder}/*.final", File::FNM_DOTMATCH)
SimpleCov.collate glob
expect(collated).to eq(merged_result)
end
it "creates a merged report with only the results from the current resultset if ignore_timeout: false" do
glob = Dir.glob("#{resultset_folder}/*.final", File::FNM_DOTMATCH)
SimpleCov.collate glob, ignore_timeout: false
expected = {"result1" => {"coverage" => resultset1}}
expect(collated).to eq(expected)
end
end
private
def create_mergeable_report(name, resultset, outdated: false)
result = SimpleCov::Result.new(resultset)
result.command_name = name
result.created_at = Time.now - 172_800 if outdated
SimpleCov::ResultMerger.store_result(result)
FileUtils.mv resultset_path, "#{resultset_path}#{name}.final"
end
def clear_mergeable_reports
SimpleCov.clear_result
FileUtils.rm Dir.glob("#{resultset_path}*")
end
def expect_merged
expected = {"result1, result2" => {"coverage" => {source_fixture("sample.rb") => {"lines" => [1, 1, 2, 2, nil, nil, 2, 2, nil, nil]}}}}
expect(collated).to eq(expected)
end
end
end
# Normally wouldn't test private methods but just start has side effects that
# cause errors so for time this is pragmatic (tm)
describe ".start_coverage_measurement", if: SimpleCov.coverage_start_arguments_supported? do
after :each do
# SimpleCov is a Singleton/global object so once any test enables
# any kind of coverage data it stays there.
# Hence, we use clear_coverage_data to create a "clean slate" for these tests
SimpleCov.clear_coverage_criteria
end
it "starts coverage in lines mode by default" do
expect(Coverage).to receive(:start).with({lines: true})
SimpleCov.send :start_coverage_measurement
end
it "starts coverage with lines and branches if branches is activated" do
expect(Coverage).to receive(:start).with({lines: true, branches: true})
SimpleCov.enable_coverage :branch
SimpleCov.send :start_coverage_measurement
end
end
end
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