Initial commit

.buildkite/pipeline.yml

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+steps:
+  - label: "🤡 :hammer:"
+    plugins:
+      docker-compose#v1.3.1:
+        run: tests

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2017 Buildkite
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+

README.md

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+# Clown Detection Buildkite Plugin
+
+A [Buildkite](https://buildkite.com/) plugin for detecting whether your code has any clowns in it. 
+
+## Example
+
+```yml
+steps:
+  - plugins:
+      detect-clowns#v1.0.0
+```
+
+## License
+
+MIT (see [LICENSE](LICENSE))

docker-compose.yml

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+version: '2'
+services:
+  tests:
+    image: buildkite/plugin-tester
+    volumes:
+      - ".:/plugin:ro"

hooks/post-checkout

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+#!/bin/bash
+set -euo pipefail
+
+echo "--- Searching for Clowns 🤡"
+echo "$BUILDKITE_BUILD_CHECKOUT_PATH"
+
+if grep -inIEr --color=ALWAYS -C1 "🤡" . ; then
+  echo "^^^ +++"
+  echo "+++ :warning: Detected clowns! 🔪"
+  exit 1
+fi

plugin.json

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+{
+  "name": "detect-clowns	",
+  "description": "Detects clown emojis in your codebase",
+  "author": "@buildkite",
+  "public": true
+}

tests/command.bats

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+#!/usr/bin/env bats
+
+load '/usr/local/lib/bats/load.bash'
+
+@test "Post-checkout filters clowns" {
+  tmp_dir=$(mktemp -d -t clowns-checkout)
+  hook_path="$PWD/hooks/post-checkout"
+
+  cd "$tmp_dir"
+  echo "Beware the clowns! 🤡" > clowns.txt
+
+  export BUILDKITE_BUILD_CHECKOUT_PATH=$tmp_dir
+  run $hook_path
+
+  assert_failure
+  assert_output --partial "Detected clowns!"
+
+  rm -rf "$tmp_dir"
+}