refactor: unify how executor tests are written (#2042)

* feat: use TaskTest for executor tests

* feat: more tests

* feat: separate tests for executing and formatting with new functional options that work for both test types

* feat: formatter tests

* refactor: more tests

Taskfile.yml

@@ -43,6 +43,13 @@ tasks:
       - "{{.BIN}}/mockery --dir ./internal/fingerprint --name SourcesCheckable"
       - "{{.BIN}}/mockery --dir ./internal/fingerprint --name StatusCheckable"
 
+  generate:fixtures:
+    desc: Runs tests and generates golden fixture files
+    aliases: [gen:fixtures, g:fixtures]
+    cmds:
+      - find ./testdata -name '*.golden' -delete
+      - go test -update ./...
+
   install:mockery:
     desc: Installs mockgen; a tool to generate mock files
     vars: