From 4cfb1becb36586e6c6a03fb56ddf3aefd0baa1cc Mon Sep 17 00:00:00 2001
From: Daniel Antos <antosdaniel@gmail.com>
Date: Sat, 23 Sep 2023 15:36:01 +0200
Subject: [PATCH] chore: run e2e tests in CI

---
 .github/workflows/go.yaml            | 20 +++++++++++++++++---
 README.md                            | 15 +++++++++++++++
 test_e2e/docker-compose-for-e2e.yaml |  5 ++++-
 3 files changed, 36 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/go.yaml b/.github/workflows/go.yaml
index fd280f1..bd5ed17 100644
--- a/.github/workflows/go.yaml
+++ b/.github/workflows/go.yaml
@@ -13,8 +13,22 @@ jobs:
         with:
           go-version: '1.21'
 
-      - name: Build
-        run: go build -v ./...
+      - name: Build server
+        run: docker build -f ./app_to_test/server/Dockerfile -t expense_tracker/server:latest .
 
-      - name: Test
+      - name: Build migrate
+        run: docker build -t expense_tracker/migrate:latest ./app_to_test/db
+
+      - name: Tests
         run: go test -v ./...
+
+      - name: E2E Tests
+        run: |
+          # Allows docker containers to call host machine
+          sudo sysctl -w net.ipv4.conf.docker0.route_localnet=1
+          sudo iptables -t nat -I PREROUTING -i docker0 -d 172.17.0.1 -p all -j DNAT --to 127.0.0.1
+          sudo iptables -t filter -I INPUT -i docker0 -d 127.0.0.1 -p all -j ACCEPT
+          
+          # Run only e2e tests
+          PKGS=$(git grep --files-with-matches "//go:build e2e_tests" -- "*.go" | xargs dirname | sed 's,^,./,g' | sort -u)
+          go test -tags=e2e_tests $PKGS
diff --git a/README.md b/README.md
index 0432446..52d1fed 100644
--- a/README.md
+++ b/README.md
@@ -33,3 +33,18 @@ of your application work as expected. These could also be named smoke tests.
 ```shell
 docker compose up
 ```
+
+## Run tests
+
+Run unit tests:
+
+```shell
+go test ./...
+```
+
+Run e2e tests:
+
+```shell
+PKGS=$(git grep --files-with-matches "//go:build e2e_tests" -- "*.go" | xargs dirname | sed 's,^,./,g' | sort -u)
+go test -tags=e2e_tests $PKGS
+```
diff --git a/test_e2e/docker-compose-for-e2e.yaml b/test_e2e/docker-compose-for-e2e.yaml
index 1fe7153..53e00a4 100644
--- a/test_e2e/docker-compose-for-e2e.yaml
+++ b/test_e2e/docker-compose-for-e2e.yaml
@@ -1,4 +1,5 @@
 version: "3.9"
+
 services:
   server:
     image: "expense_tracker/server:latest"
@@ -13,6 +14,8 @@ services:
         condition: service_healthy
     networks:
       - default
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
     ports:
       # Once again, we use a random port to avoid conflicts.
       - "8000"
@@ -41,4 +44,4 @@ services:
         condition: service_healthy
 
 networks:
-  default:
\ No newline at end of file
+  default: