Add integration for script path override

Author: Kevin Paulisse

spec/octocatalog-diff/fixtures/override-scripts/git-extract.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+# For test purposes only, this script would ordinarily run a git checkout, but here
+# it's going to generate a directory structure by copying some other fixture.
+
+if [ -z "$OCD_GIT_EXTRACT_BRANCH" ]; then
+  echo "Error: Must declare OCD_GIT_EXTRACT_BRANCH"
+  exit 255
+fi
+
+if [ -z "$OCD_GIT_EXTRACT_TARGET" ]; then
+  echo "Error: Must declare OCD_GIT_EXTRACT_TARGET"
+  exit 255
+fi
+
+if [ -z "$FIXTURE_DIR" ]; then
+  echo "Error: Must declare FIXTURE_DIR"
+  exit 255
+fi
+
+set -euf -o pipefail
+cd "${FIXTURE_DIR}/${OCD_GIT_EXTRACT_BRANCH}"
+tar -cf - . | ( cd "$OCD_GIT_EXTRACT_TARGET" && tar -xf - )
+mkdir -p "$OCD_GIT_EXTRACT_TARGET/environments"
+ln -s "$OCD_GIT_EXTRACT_TARGET" "$OCD_GIT_EXTRACT_TARGET/environments/production"

spec/octocatalog-diff/integration/override_script_path_spec.rb

@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+
+require_relative 'integration_helper'
+
+describe 'script path override' do
+  context 'without any scripts' do
+    it 'should fail' do
+      result = OctocatalogDiff::Integration.integration(
+        spec_fact_file: 'facts.yaml',
+        argv: [
+          '-n', 'rspec-node.github.net', '--no-parallel',
+          '-t', 'ignore-tags-new', '-f', 'ignore-tags-old',
+          '--basedir', OctocatalogDiff::Spec.fixture_path('repos/default'),
+          '--override-script-path', OctocatalogDiff::Spec.fixture_path('scripts')
+        ]
+      )
+      expect(result.exitcode).to eq(-1)
+      expect(result.logs).to match(/Git checkout error: Git archive ignore-tags-old->/)
+    end
+  end
+
+  context 'with an overridden git-extract.sh script' do
+    before(:each) do
+      ENV['FIXTURE_DIR'] = OctocatalogDiff::Spec.fixture_path('repos')
+    end
+
+    after(:each) do
+      ENV.delete('FIXTURE_DIR')
+    end
+
+    it 'should return expected diff' do
+      result = OctocatalogDiff::Integration.integration(
+        spec_fact_file: 'facts.yaml',
+        argv: [
+          '-n', 'rspec-node.github.net', '--no-parallel',
+          '-t', 'ignore-tags-new', '-f', 'ignore-tags-old',
+          '--basedir', OctocatalogDiff::Spec.fixture_path('repos/default'),
+          '--pass-env-vars', 'FIXTURE_DIR',
+          '--override-script-path', OctocatalogDiff::Spec.fixture_path('override-scripts')
+        ]
+      )
+      expect(result.exitcode).to eq(2), OctocatalogDiff::Integration.format_exception(result)
+      expect(result.logs).to match(/Selecting.+git-extract.sh from override script path/)
+      expect(result.diffs.size).to eq(30) # See ignore_tags_spec.rb
+    end
+  end
+end