chore: run e2e tests in CI

.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

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
+```

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:
+  default: