Files
dokku/tests/unit/builder.bats
Jose Diaz-Gonzalez 353438dbd3 feat: allow builders to be detected based on repository contents
Rather than hardcode two builders, allow builders to specify a `builder-detect` trigger. This trigger can be used to specify if the builder should or should not be used for an application. Each builder takes stdin and can decide if it wants to emit it or emit it's own image source type.

If the final value is empty, then Dokku will default to herokuish (and cnb once that is stable). In addition, a future change may allow users to manually specify a builder in the case they wish to override the choice selected by Dokku.

This change enables users to build custom builder plugins and have those plugins used for building an image asset. By way of example, an enterprising user could create a `builder-lambda` based on lambci, and then pair this with a scheduler plugin that updates a lambda function on AWS. Alternatively, a user might decide they wish to place their Dockerfile in a specific directory for their applications - such as an `_infrastructure` directory - and create a plugin to override how that is detected within Dokku.
2021-02-28 16:19:41 -05:00

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#!/usr/bin/env bats
load test_helper
setup() {
create_app
}
teardown() {
destroy_app
}
@test "(builder) builder-detect [cnb]" {
local TMP=$(mktemp -d "/tmp/dokku.me.XXXXX")
trap 'popd &>/dev/null || true; rm -rf "$TMP"' INT TERM
# test project.toml
run touch "$TMP/project.toml"
echo "output: $output"
echo "status: $status"
assert_success
chown -R dokku:dokku "$TMP"
run /bin/bash -c "dokku plugin:trigger builder-detect $TEST_APP $TMP | tail -n1"
echo "output: $output"
echo "status: $status"
assert_success
assert_output "cnb"
sudo rm -rf $TMP/*
echo "output: $output"
echo "status: $status"
assert_success
# test DOKKU_CNB_EXPERIMENTAL env var
run /bin/bash -c "dokku config:set $TEST_APP DOKKU_CNB_EXPERIMENTAL=1"
echo "output: $output"
echo "status: $status"
assert_success
chown -R dokku:dokku "$TMP"
run /bin/bash -c "dokku plugin:trigger builder-detect $TEST_APP $TMP | tail -n1"
echo "output: $output"
echo "status: $status"
assert_success
assert_output "cnb"
}
@test "(builder) builder-detect [dockerfile]" {
local TMP=$(mktemp -d "/tmp/dokku.me.XXXXX")
trap 'popd &>/dev/null || true; rm -rf "$TMP"' INT TERM
run touch "$TMP/Dockerfile"
echo "output: $output"
echo "status: $status"
assert_success
chown -R dokku:dokku "$TMP"
run /bin/bash -c "dokku plugin:trigger builder-detect $TEST_APP $TMP | tail -n1"
echo "output: $output"
echo "status: $status"
assert_success
assert_output "dockerfile"
}
@test "(builder) builder-detect [herokuish]" {
local TMP=$(mktemp -d "/tmp/dokku.me.XXXXX")
trap 'popd &>/dev/null || true; rm -rf "$TMP"' INT TERM
touch "$TMP/Dockerfile"
# test buildpacks
chown -R dokku:dokku "$TMP"
run /bin/bash -c "touch $TMP/.buildpacks"
echo "output: $output"
echo "status: $status"
assert_success
chown -R dokku:dokku "$TMP"
run /bin/bash -c "dokku plugin:trigger builder-detect $TEST_APP $TMP | tail -n1"
echo "output: $output"
echo "status: $status"
assert_success
assert_output "herokuish"
sudo rm -rf $TMP/*
echo "output: $output"
echo "status: $status"
assert_success
# test .env
run /bin/bash -c "echo BUILDPACK_URL=null > $TMP/.env"
echo "output: $output"
echo "status: $status"
assert_success
chown -R dokku:dokku "$TMP"
run /bin/bash -c "dokku plugin:trigger builder-detect $TEST_APP $TMP | tail -n1"
echo "output: $output"
echo "status: $status"
assert_success
assert_output "herokuish"
sudo rm -rf $TMP/*
echo "output: $output"
echo "status: $status"
assert_success
# test BUILDPACK_URL env var
run /bin/bash -c "dokku config:set $TEST_APP BUILDPACK_URL=null"
echo "output: $output"
echo "status: $status"
assert_success
chown -R dokku:dokku "$TMP"
run /bin/bash -c "dokku plugin:trigger builder-detect $TEST_APP $TMP | tail -n1"
echo "output: $output"
echo "status: $status"
assert_success
assert_output "herokuish"
}