Add integration tests to project (#747)

Adds integration tests to the project that's able to run in CI across different ruby versions.

* Adds a Rails 5.2.4.1 app
* Adds a Rails 6.0.2.1 app

Fixes #733

.github/workflows/ci.yml

@@ -12,6 +12,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
         ruby: ['2.4.x', '2.5.x', '2.6.x']
 
@@ -24,11 +25,20 @@ jobs:
         with:
           ruby-version: ${{ matrix.ruby }}
 
-      - name: Bundle
+      - name: Install sqlite
         run: |
-          gem update --system
-          gem update bundler
-          bundle install --jobs 4 --retry 3
+          sudo apt-get install libsqlite3-dev
 
-      - name: Test
-        run: bundle exec rubocop && bundle exec rspec
+      - name: Update System
+        run: |
+          gem update --system --no-document
+
+      - name: Bundle install for Annotate models
+        run: |
+          bundle install --jobs=4 --retry=3
+
+      - name: Run Tests
+        run: bundle exec rspec
+
+      - name: Rubocop
+        run: bundle exec rubocop

.gitignore

@@ -1,5 +1,3 @@
-!/spec/integration/*/log/.gitkeep
-!/spec/integration/*/tmp/.gitkeep
 *.gem
 .DS_Store
 .bundle
@@ -16,8 +14,4 @@
 /doc/*
 /pkg/*
 /spec/debug.log
-/spec/integration/*/bin/
-/spec/integration/*/db/test.*
-/spec/integration/*/log/*
-/spec/integration/*/tmp/*
 .byebug_history

.rubocop.yml

@@ -6,6 +6,7 @@ AllCops:
     - 'vendor/**/*'
     - 'spec/fixtures/**/*'
     - 'tmp/**/*'
+    - 'spec/integration/**/*'
 
 Metrics/BlockLength:
   Exclude: