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# frozen_string_literal: true
require "helper"
RSpec.describe SimpleCov::ExitCodes::MaximumCoverageDropCheck do
let(:result) do
instance_double(SimpleCov::Result, coverage_statistics: stats)
end
let(:stats) do
{
line: SimpleCov::CoverageStatistics.new(covered: 8, missed: 2),
branch: SimpleCov::CoverageStatistics.new(covered: 8, missed: 2)
}
end
let(:last_run) do
{
result: last_coverage
}
end
let(:last_coverage) { {line: 80.0, branch: 80.0} }
let(:maximum_coverage_drop) { {line: 0, branch: 0} }
subject { described_class.new(result, maximum_coverage_drop) }
before :each do
expect(SimpleCov::LastRun).to receive(:read).and_return(last_run)
end
context "we're at the same coverage" do
it { is_expected.not_to be_failing }
end
context "more coverage drop allowed" do
let(:maximum_coverage_drop) { {line: 10, branch: 10} }
it { is_expected.not_to be_failing }
end
context "last coverage lower then new coverage" do
let(:last_coverage) { {line: 70.0, branch: 70.0} }
it { is_expected.not_to be_failing }
end
context "last coverage higher than new coverage" do
let(:last_coverage) { {line: 80.01, branch: 80.01} }
it { is_expected.to be_failing }
context "but allowed drop is within range" do
let(:maximum_coverage_drop) { {line: 0.01, branch: 0.01} }
it { is_expected.not_to be_failing }
end
end
context "one coverage lower than maximum drop" do
let(:last_coverage) { {line: 80.01, branch: 70.0} }
it { is_expected.to be_failing }
context "but allowed drop is within range" do
let(:maximum_coverage_drop) { {line: 0.01} }
it { is_expected.not_to be_failing }
end
end
context "coverage expectation for a coverage that wasn't previously present" do
let(:last_coverage) { {line: 80.0} }
let(:maximum_coverage_drop) { {line: 0, branch: 0} }
it { is_expected.not_to be_failing }
end
context "no last run coverage information" do
let(:last_run) { nil }
it { is_expected.not_to be_failing }
end
context "old last_run.json format" do
let(:last_run) do
{
# this format only considers line coverage
result: {covered_percent: 80.0}
}
end
it { is_expected.not_to be_failing }
end
end
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