diff --git a/.github/workflows/itest.yml b/.github/workflows/itest.yml
new file mode 100644
index 000000000..b0512b35c
--- /dev/null
+++ b/.github/workflows/itest.yml
@@ -0,0 +1,20 @@
+name: itest
+on:
+  push:
+    branches: master
+  pull_request:
+    branches: master
+jobs:
+  itest:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 16
+      - uses: actions/setup-java@v4
+        with:
+          distribution: 'zulu'
+          java-version: 20
+      - run: npm install -g eolang
+      - run: ./pipeline.sh
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index fc587c5eb..8a188c2b8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,7 @@
+.eoc
+before.txt
+after.txt
+app.eo
 *.bak
 eo-phi-normalizer/src/Language/EO/Phi/Syntax/Lex.hs
 eo-phi-normalizer/src/Language/EO/Phi/Syntax/Par.hs
diff --git a/pipeline.sh b/pipeline.sh
new file mode 100755
index 000000000..0b026e6e0
--- /dev/null
+++ b/pipeline.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+set -x
+set -e
+
+EO=0.34.2
+
+cat > app.eo <<EOT
+[args] > app
+  QQ.io.stdout > @
+    "Hello, world!\n"
+EOT
+
+eoc "--parser=${EO}" clean
+eoc "--parser=${EO}" link
+eoc "--parser=${EO}" --alone dataize app > before.txt
+
+eoc "--parser=${EO}" phi
+
+# Now, you modify/normalize this file:
+# .eoc/phi/app.phi
+
+eoc "--parser=${EO}" unphi
+
+cp .eoc/unphi/app.xmir .eoc/2-optimize/app.xmir
+
+eoc "--parser=${EO}" print
+
+cp .eoc/print/app.eo app.eo
+
+eoc "--parser=${EO}" clean
+
+eoc "--parser=${EO}" link
+eoc "--parser=${EO}" --alone dataize app > after.txt
+
+if [ "$(cat before.txt)" == "$(cat after.txt)" ]; then
+    echo 'SUCCESS'
+else
+    echo 'FAILURE'
+    exit 1
+fi
\ No newline at end of file