How to perform integration testing in Go?

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How to perform integration testing in Go?

2020-09-29

Integration testing can be triggered by using Drone downstream plugin:

 1steps:
 2- name: trigger
 3  image: plugins/downstream:linux-amd64
 4  settings:
 5    params:
 6    - COMMIT_BRANCH=${DRONE_COMMIT_BRANCH}
 7    repositories:
 8    - repo/integration-test@${DRONE_COMMIT_BRANCH}
 9    server: https://drone.example.com
10    token:
11      from_secret: drone_token

It can be separated with unit tests by using build tags:

1// +build integration
2
3package webserver_test

Then we can write code to perform integration test as usual.

In the integration-test, clone the upstream repo:

1- name: clone-upstream
2  image: alpine/git:v2.24.3
3  commands:
4  - git clone -b $${COMMIT_BRANCH:-main} https://github.com/owner/upstream.git /upstream
5  volumes:
6  - name: upstream
7    path: /upstream

and run integration tests:

1- name: test-something
2  image: golang:1.14.7
3  commands:
4  - cd /path/to/webserver
5  - go test -tags integration -v -run TestSomething
6  volumes:
7  - name: upstream
8    path: /upstream

Tags: golang drone integration-test

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