Grand test fixup (#138)

* start fixing up tests

* fix up tests + automate with drone

* fiddle with linting

* messing about with drone.yml

* some more fiddling

* hmmm

* add cache

* add vendor directory

* verbose

* ci updates

* update some little things

* update sig

.drone.yml

@@ -1,18 +1,55 @@
+---
+### Drone configuration file for GoToSocial.
+### Connects to https://drone.superseriousbusiness.org to perform testing, linting, and automatic builds/pushes to docker.
+###
+### For documentation on drone, see: https://docs.drone.io/
+### For documentation on drone docker pipelines in particular: https://docs.drone.io/pipeline/docker/overview/
+
 kind: pipeline
 type: docker
-name: dockerpublish
+name: default
 steps:
-  - name: publish image
-    image: plugins/docker
-    settings:
-      auto_tag: true
-      username:
-        from_secret: gts_docker_username
-      password:
-        from_secret: gts_docker_password
-      repo: superseriousbusiness/gotosocial
-      tags: latest
-    when:
-      event:
-        exclude:
-          - pull_request
+
+# We use golangci-lint for linting.
+# See: https://golangci-lint.run/
+- name: lint
+  image: golangci/golangci-lint:v1.41.1
+  commands:
+  - golangci-lint run --timeout 5m0s --tests=false --verbose
+
+- name: test
+  image: golang:1.16.4
+  environment:
+    GTS_DB_ADDRESS: postgres
+  commands:
+  # `-count 1`  => run all tests at least once
+  # `-p 1`      => run maximum one test at a time
+  # `./...`     => run all tests
+  - go test -count 1 -p 1 ./...
+
+- name: publish
+  image: plugins/docker
+  settings:
+    auto_tag: true
+    username: gotosocial
+    password:
+      from_secret: gts_docker_password
+    repo: superseriousbusiness/gotosocial
+    tags: latest
+  when:
+    event:
+      exclude:
+        - pull_request
+
+services:
+# We need this postgres service running for the test step.
+# See: https://docs.drone.io/pipeline/docker/syntax/services/
+- name: postgres
+  image: postgres
+  environment:
+    POSTGRES_PASSWORD: postgres
+---
+kind: signature
+hmac: 78dd20d97444a9e2904552d56eb52f43ad30ba27e1d897a5ea6808971f9a0ae2
+
+...