Add integration test for the CLI

Author: Kevin Paulisse

spec/octocatalog-diff/fixtures/cli-configs/invalid.rb

@@ -0,0 +1,9 @@
+# This is a configuration file for octocatalog-diff
+
+module OctocatalogDiff
+  class Config
+    def self.config
+      raise 'Fizz Buzz'
+    end
+  end
+end

spec/octocatalog-diff/fixtures/cli-configs/valid.rb

@@ -0,0 +1,13 @@
+# This is a configuration file for octocatalog-diff
+
+module OctocatalogDiff
+  class Config
+    def self.config
+      {
+        header: :default,
+        hiera_config: 'config/hiera.yaml',
+        hiera_path: 'hieradata'
+      }
+    end
+  end
+end

spec/octocatalog-diff/integration/cli_spec.rb

@@ -0,0 +1,76 @@
+# frozen_string_literal: true
+
+require_relative '../tests/spec_helper'
+
+require 'open3'
+require 'shellwords'
+
+describe 'bin/octocatalog-diff' do
+  let(:script) { File.expand_path('../../../bin/octocatalog-diff', File.dirname(__FILE__)) }
+  let(:ls_l) { Open3.capture2e("ls -l #{script}").first }
+  let(:config_test) { '--config-test' }
+  let(:normal_settings) do
+    [
+      '-d',
+      '-n rspec-node.github.net',
+      '--fact-file', OctocatalogDiff::Spec.fixture_path('facts/facts.yaml'),
+      '--from-catalog', OctocatalogDiff::Spec.fixture_path('catalogs/tiny-catalog.json'),
+      '--bootstrapped-to-dir', OctocatalogDiff::Spec.fixture_path('repos/default'),
+      '--puppet-binary', OctocatalogDiff::Spec::PUPPET_BINARY
+    ].map { |x| Shellwords.escape(x) }.join(' ')
+  end
+
+  it 'should exist' do
+    expect(File.file?(script)).to eq(true), ls_l
+  end
+
+  it 'should be executable' do
+    expect(File.executable?(script)).to eq(true), ls_l
+  end
+
+  context 'with an invalid configuration file' do
+    let(:cfg) { OctocatalogDiff::Spec.fixture_path('cli-configs/invalid.rb') }
+    let(:env) { { 'OCTOCATALOG_DIFF_CONFIG_FILE' => cfg } }
+
+    it 'should error with --config-test' do
+      text, status = Open3.capture2e(env, "#{script} #{config_test}")
+      expect(status.exitstatus).to eq(1), text
+      expect(text).to match(%r{Loading octocatalog-diff configuration from .+/fixtures/cli-configs/invalid.rb})
+      expect(text).to match(/FATAL .+: Fizz Buzz/)
+    end
+
+    it 'should error with normal settings' do
+      text, status = Open3.capture2e(env, "#{script} #{normal_settings}")
+      expect(status.exitstatus).to eq(1), text
+      expect(text).to match(%r{Loading octocatalog-diff configuration from .+/fixtures/cli-configs/invalid.rb})
+      expect(text).to match(/FATAL .+: Fizz Buzz/)
+    end
+  end
+
+  context 'with a valid configuration file' do
+    let(:cfg) { OctocatalogDiff::Spec.fixture_path('cli-configs/valid.rb') }
+    let(:env) { { 'OCTOCATALOG_DIFF_CONFIG_FILE' => cfg } }
+
+    it 'should print values with --config-test and exit' do
+      text, status = Open3.capture2e(env, "#{script} #{config_test}")
+      expect(status.exitstatus).to eq(0), text
+      expect(text).to match(%r{Loading octocatalog-diff configuration from .+/fixtures/cli-configs/valid.rb})
+      expect(text).to match(/:header => \(Symbol\) :default/)
+      expect(text).to match(%r{:hiera_config => \(String\) "config/hiera.yaml"})
+      expect(text).to match(/:hiera_path => \(String\) "hieradata"/)
+      expect(text).to match(/Exiting now because --config-test was specified/)
+    end
+
+    it 'should print settings details and then invoke the main CLI' do
+      text, status = Open3.capture2e(env, "#{script} #{normal_settings}")
+      expect(status.exitstatus).to eq(2), text
+      expect(text).to match(%r{Loading octocatalog-diff configuration from .+/fixtures/cli-configs/valid.rb})
+      expect(text).to match(%r{Loaded 3 settings from .+/fixtures/cli-configs/valid.rb})
+      expect(text).to match(/Initialized OctocatalogDiff::Catalog::Computed for to-catalog/)
+      expect(text).to match(/Entering catdiff; catalog sizes: 2, 21/)
+      expect(text).to match(/Entering filter_diffs_for_absent_files with 14 diffs/)
+      expect(text).to match(/Added resources: 14/)
+      expect(text).to match(/\+ Ssh_authorized_key\[root@6def27049c06f48eea8b8f37329f40799d07dc84\]/)
+    end
+  end
+end