From 8bb46baebbc0694130b86483705bfef2c159704e Mon Sep 17 00:00:00 2001
From: Markus Reiter <me@reitermark.us>
Date: Wed, 15 Feb 2017 19:20:38 +0100
Subject: [PATCH] Add RSpec support for integration commands.
---
Library/Homebrew/test/spec_helper.rb | 1 +
.../spec/shared_context/integration_test.rb | 94 +++++++++++++++++++
2 files changed, 95 insertions(+)
create mode 100644 Library/Homebrew/test/support/helper/spec/shared_context/integration_test.rb
diff --git a/Library/Homebrew/test/spec_helper.rb b/Library/Homebrew/test/spec_helper.rb
index b58125aecc..547ec3f7bf 100644
--- a/Library/Homebrew/test/spec_helper.rb
+++ b/Library/Homebrew/test/spec_helper.rb
@@ -16,6 +16,7 @@ require "tap"
require "test/support/helper/shutup"
require "test/support/helper/fixtures"
+require "test/support/helper/spec/shared_context/integration_test"
TEST_DIRECTORIES = [
CoreTap.instance.path/"Formula",
diff --git a/Library/Homebrew/test/support/helper/spec/shared_context/integration_test.rb b/Library/Homebrew/test/support/helper/spec/shared_context/integration_test.rb
new file mode 100644
index 0000000000..dd2271a3a4
--- /dev/null
+++ b/Library/Homebrew/test/support/helper/spec/shared_context/integration_test.rb
@@ -0,0 +1,94 @@
+require "rspec"
+require "open3"
+
+RSpec::Matchers.define_negated_matcher :not_to_output, :output
+RSpec::Matchers.define_negated_matcher :be_a_failure, :be_a_success
+
+RSpec.shared_context "integration test" do
+ extend RSpec::Matchers::DSL
+
+ matcher :be_a_success do
+ match do |actual|
+ status = actual.is_a?(Proc) ? actual.call : actual
+ status.respond_to?(:success?) && status.success?
+ end
+
+ def supports_block_expectations?
+ true
+ end
+
+ # It needs to be nested like this:
+ #
+ # expect {
+ # expect {
+ # # command
+ # }.to be_a_success
+ # }.to output(something).to_stdout
+ #
+ # rather than this:
+ #
+ # expect {
+ # expect {
+ # # command
+ # }.to output(something).to_stdout
+ # }.to be_a_success
+ #
+ def expects_call_stack_jump?
+ true
+ end
+ end
+
+ before(:each) do
+ (HOMEBREW_PREFIX/"bin").mkpath
+ FileUtils.touch HOMEBREW_PREFIX/"bin/brew"
+ end
+
+ after(:each) do
+ FileUtils.rm HOMEBREW_PREFIX/"bin/brew"
+ FileUtils.rmdir HOMEBREW_PREFIX/"bin"
+ end
+
+ # Generate unique ID to be able to
+ # properly merge coverage results.
+ def command_id_from_args(args)
+ @command_count ||= 0
+ pretty_args = args.join(" ").gsub(TEST_TMPDIR, "@TMPDIR@")
+ file_and_line = caller[1].sub(/(.*\d+):.*/, '\1')
+ .sub("#{HOMEBREW_LIBRARY_PATH}/test/", "")
+ "#{file_and_line}:brew #{pretty_args}:#{@command_count += 1}"
+ end
+
+ # Runs a `brew` command with the test configuration
+ # and with coverage reporting enabled.
+ def brew(*args)
+ env = args.last.is_a?(Hash) ? args.pop : {}
+
+ env.merge!(
+ "HOMEBREW_BREW_FILE" => HOMEBREW_PREFIX/"bin/brew",
+ "HOMEBREW_INTEGRATION_TEST" => command_id_from_args(args),
+ "HOMEBREW_TEST_TMPDIR" => TEST_TMPDIR,
+ "HOMEBREW_DEVELOPER" => ENV["HOMEBREW_DEVELOPER"],
+ )
+
+ ruby_args = [
+ "-W0",
+ "-I", "#{HOMEBREW_LIBRARY_PATH}/test/support/lib",
+ "-I", HOMEBREW_LIBRARY_PATH.to_s,
+ "-rconfig"
+ ]
+ ruby_args << "-rsimplecov" if ENV["HOMEBREW_TESTS_COVERAGE"]
+ ruby_args << "-rtest/support/helper/integration_mocks"
+ ruby_args << (HOMEBREW_LIBRARY_PATH/"brew.rb").resolved_path.to_s
+
+ Bundler.with_original_env do
+ stdout, stderr, status = Open3.capture3(env, RUBY_PATH, *ruby_args, *args)
+ $stdout.print stdout
+ $stderr.print stderr
+ status
+ end
+ end
+end
+
+RSpec.configure do |config|
+ config.include_context "integration test", :integration_test
+end
--
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