diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..8d88481
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,29 @@
+name: Test
+
+on:
+  pull_request:
+    branches: ["master"]
+    paths-ignore:
+    - 'README.md'
+    - LICENSE
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    env:
+      BUNDLE_GEMFILE: tests/Gemfile
+      BUNDLE_GEMFILE.lock: tests/Gemfile.lock
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: '3.3'
+        bundler-cache: true
+
+    - name: test
+      run: cat /etc/os-release
+
+    - name: run bashcov
+      run: bundle exec bashcov ./setuper
diff --git a/.simplecov b/.simplecov
new file mode 100644
index 0000000..7ec8580
--- /dev/null
+++ b/.simplecov
@@ -0,0 +1,7 @@
+SimpleCov.start do
+  minimum_coverage 90
+
+  add_filter "debug.sh"
+  add_filter "/test/"
+  add_filter "/.git/"
+end
diff --git a/tests/Gemfile b/tests/Gemfile
new file mode 100644
index 0000000..855562b
--- /dev/null
+++ b/tests/Gemfile
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+# gem "rails"
+
+gem "bashcov", "~> 3.1"
diff --git a/tests/Gemfile.lock b/tests/Gemfile.lock
new file mode 100644
index 0000000..ead47eb
--- /dev/null
+++ b/tests/Gemfile.lock
@@ -0,0 +1,22 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    bashcov (3.1.2)
+      simplecov (~> 0.22.0)
+    docile (1.4.0)
+    simplecov (0.22.0)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.4)
+
+PLATFORMS
+  ruby
+  x86_64-linux
+
+DEPENDENCIES
+  bashcov (~> 3.1)
+
+BUNDLED WITH
+   2.5.11