Use bats to clean up tests and remove complexity

test.bats

@@ -0,0 +1,182 @@
+#!/usr/bin/env bats
+
+setup(){
+  export GITHUB_REF='refs/heads/master'
+  export INPUT_USERNAME='USERNAME'
+  export INPUT_PASSWORD='PASSWORD'
+  export INPUT_NAME='my/repository'
+}
+
+teardown() {
+  unset INPUT_SNAPSHOT
+  unset INPUT_DOCKERFILE
+  unset INPUT_REGISTRY
+  unset INPUT_CACHE
+  unset GITHUB_SHA
+}
+
+@test "it pushes master branch to latest" {
+  export GITHUB_REF='refs/heads/master'
+
+  run /entrypoint.sh
+
+  local expected="Called mock with: login -u USERNAME --password-stdin
+Called mock with: build -t my/repository:latest .
+Called mock with: push my/repository:latest
+Called mock with: logout"
+  [ "$output" = "$expected" ]
+}
+
+@test "it pushes branch as name of the branch" {
+  export GITHUB_REF='refs/heads/myBranch'
+
+  run /entrypoint.sh
+
+  local expected="Called mock with: login -u USERNAME --password-stdin
+Called mock with: build -t my/repository:myBranch .
+Called mock with: push my/repository:myBranch
+Called mock with: logout"
+  [ "$output" = "$expected" ]
+}
+
+@test "it pushes tags to latest" {
+  export GITHUB_REF='refs/tags/myRelease'
+
+  run /entrypoint.sh
+
+  local expected="Called mock with: login -u USERNAME --password-stdin
+Called mock with: build -t my/repository:latest .
+Called mock with: push my/repository:latest
+Called mock with: logout"
+  [ "$output" = "$expected" ]
+}
+
+@test "it pushes specific Dockerfile to latest" {
+  export INPUT_DOCKERFILE='MyDockerFileName'
+
+  run /entrypoint.sh
+
+  local expected="Called mock with: login -u USERNAME --password-stdin
+Called mock with: build -f MyDockerFileName -t my/repository:latest .
+Called mock with: push my/repository:latest
+Called mock with: logout"
+  [ "$output" = "$expected" ]
+}
+
+@test "it pushes branch by sha and date in addition" {
+  export INPUT_SNAPSHOT='true'
+  export GITHUB_SHA='12169ed809255604e557a82617264e9c373faca7'
+  export MOCK_DATE='197001010101'
+
+  run /entrypoint.sh
+
+  local expected="Called mock with: login -u USERNAME --password-stdin
+Called mock with: build -t my/repository:latest -t my/repository:19700101010112169e .
+Called mock with: push my/repository:latest
+Called mock with: push my/repository:19700101010112169e
+Called mock with: logout"
+  [ "$output" = "$expected" ]
+}
+
+@test "it caches image from former build and uses it for snapshot" {
+  export GITHUB_SHA='12169ed809255604e557a82617264e9c373faca7'
+  export MOCK_DATE='197001010101'
+  export INPUT_SNAPSHOT='true'
+  export INPUT_CACHE='true'
+
+  run /entrypoint.sh
+
+  local expected="Called mock with: login -u USERNAME --password-stdin
+Called mock with: pull my/repository:latest
+Called mock with: build --cache-from my/repository:latest -t my/repository:latest -t my/repository:19700101010112169e .
+Called mock with: push my/repository:latest
+Called mock with: push my/repository:19700101010112169e
+Called mock with: logout"
+  [ "$output" = "$expected" ]
+}
+
+@test "it pushes branch by sha and date with specific Dockerfile" {
+  export GITHUB_SHA='12169ed809255604e557a82617264e9c373faca7'
+  export MOCK_DATE='197001010101'
+  export INPUT_SNAPSHOT='true'
+  export INPUT_DOCKERFILE='MyDockerFileName'
+
+  run /entrypoint.sh
+
+  local expected="Called mock with: login -u USERNAME --password-stdin
+Called mock with: build -f MyDockerFileName -t my/repository:latest -t my/repository:19700101010112169e .
+Called mock with: push my/repository:latest
+Called mock with: push my/repository:19700101010112169e
+Called mock with: logout"
+  [ "$output" = "$expected" ]
+}
+
+@test "it caches image from former build and uses it for snapshot with specific Dockerfile" {
+  export GITHUB_SHA='12169ed809255604e557a82617264e9c373faca7'
+  export MOCK_DATE='197001010101'
+  export INPUT_SNAPSHOT='true'
+  export INPUT_CACHE='true'
+  export INPUT_DOCKERFILE='MyDockerFileName'
+
+  run /entrypoint.sh
+
+  local expected="Called mock with: login -u USERNAME --password-stdin
+Called mock with: pull my/repository:latest
+Called mock with: build -f MyDockerFileName --cache-from my/repository:latest -t my/repository:latest -t my/repository:19700101010112169e .
+Called mock with: push my/repository:latest
+Called mock with: push my/repository:19700101010112169e
+Called mock with: logout"
+  [ "$output" = "$expected" ]
+}
+
+@test "it performs a login to another registry" {
+  export INPUT_REGISTRY='https://myRegistry'
+
+  run /entrypoint.sh
+
+  local expected="Called mock with: login -u USERNAME --password-stdin https://myRegistry
+Called mock with: build -t my/repository:latest .
+Called mock with: push my/repository:latest
+Called mock with: logout"
+  [ "$output" = "$expected" ]
+}
+
+@test "it caches the image from a former build" {
+  export INPUT_CACHE='true'
+
+  run /entrypoint.sh
+
+  local expected="Called mock with: login -u USERNAME --password-stdin
+Called mock with: pull my/repository:latest
+Called mock with: build --cache-from my/repository:latest -t my/repository:latest .
+Called mock with: push my/repository:latest
+Called mock with: logout"
+  [ "$output" = "$expected" ]
+}
+
+@test "it errors when with.name was not set" {
+  unset INPUT_NAME
+
+  run /entrypoint.sh
+
+  local expected="Unable to find the repository name. Did you set with.name?"
+  [ "$output" = "$expected" ]
+}
+
+@test "it errors when with.username was not set" {
+  unset INPUT_USERNAME
+
+  run /entrypoint.sh
+
+  local expected="Unable to find the username. Did you set with.username?"
+  [ "$output" = "$expected" ]
+}
+
+@test "it errors when with.password was not set" {
+  unset INPUT_PASSWORD
+
+  run /entrypoint.sh
+
+  local expected="Unable to find the password. Did you set with.password?"
+  [ "$output" = "$expected" ]
+}