added test for plack

mackerel-plugin-plack/rule.txt

@@ -0,0 +1,4 @@
+plack.workers.busy_workers	>=0
+plack.workers.idle_workers	>=0
+plack.req.requests	>=0
+plack.bytes.bytes_sent	>=0

mackerel-plugin-plack/test.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+
+prog=$(basename "$0")
+if ! [ -S /var/run/docker.sock ]
+then
+	echo "$prog: there are no running docker" >&2
+	exit 2
+fi
+
+cd "$(dirname "$0")" || exit
+PATH=$(pwd):$PATH
+plugin=$(basename "$(pwd)")
+if ! which "$plugin" >/dev/null
+then
+	echo "$prog: $plugin is not installed" >&2
+	exit 2
+fi
+
+image=local/test-$plugin
+port=5000
+
+docker build -t $image testdata/
+
+docker run --name "test-$plugin" -p $port:5000 -d $image
+trap 'docker stop test-$plugin; docker rm test-$plugin; exit 1' 1 2 3 15
+sleep 10
+
+# to store previous value to calculate a diff of metrics
+$plugin -port $port >/dev/null 2>&1
+sleep 1
+
+$plugin -port $port | graphite-metric-test -f rule.txt
+status=$?
+
+docker stop "test-$plugin"
+docker rm "test-$plugin"
+exit $status

mackerel-plugin-plack/testdata/Dockerfile

@@ -0,0 +1,14 @@
+FROM perl:5.36
+
+COPY . /usr/src/myapp
+WORKDIR /usr/src/myapp
+
+RUN cpm install -v
+
+EXPOSE 5000
+
+ENV PERL5LIB /usr/src/myapp/local/lib/perl5
+ENV PATH $PATH:/usr/src/myapp/local/bin/
+
+CMD [ "plackup", "app.psgi" ]
+

mackerel-plugin-plack/testdata/app.psgi

@@ -0,0 +1,20 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use utf8;
+
+use Plack::Builder;
+
+builder {
+    enable "Plack::Middleware::ServerStatus::Lite",
+        path         => '/server-status',
+        allow        => [ '0.0.0.0/0' ],
+        counter_file => '/tmp/counter_file',
+        scoreboard   => '/var/run/server';
+
+    sub {
+        [200, ["Content-Type" => "text/plain"], "ok"];
+    }
+};
+

mackerel-plugin-plack/testdata/cpanfile

@@ -0,0 +1,2 @@
+requires "Plack", ">= 1.0048";
+requires "Plack::Middleware::ServerStatus::Lite", "0.36";