adding integration tests

test/README.md

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+All tests are split in three folders:
+
+ - `unit` - Tests that cover functions that transform data in an non-trivial way. These tests simply require() a few files and run code in there, so they are very fast.
+ - `functional` - Tests that launch sinopia instance and perform a series of requests to it over http. They are slower than unit tests.
+ - `integration` - Tests that launch sinopia instance and do requests to it using npm. They are really slow and can hit a real npm registry.
+
+Unit and functional tests are executed automatically with `yapm test`. Integration tests are supposed to be executed manually from time to time.
+

test/integration/config.yaml

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+storage: ./.sinopia_test_env/test-storage
+
+users:
+  test:
+    password: a94a8fe5ccb19ba61c4c0873d391e987982fbbd3
+
+uplinks:
+  npmjs:
+    url: https://registry.npmjs.org/
+
+logs:
+  - {type: stdout, format: pretty, level: trace}
+
+packages:
+  jju:
+    allow_access: all
+    allow_publish: all
+    proxy_access: npmjs
+
+  '*':
+    allow_access: all
+    allow_publish: all
+
+listen: 55501
+

test/integration/test.pl

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+#!/usr/bin/perl
+
+# note to readers: in perl it's useful, in javascript it isn't
+use strict;
+
+# setting up working environment && chdir there
+use Cwd 'abs_path';
+use File::Basename;
+$ENV{HOME} = dirname(abs_path( __FILE__ )) . '/.sinopia_test_env';
+system('rm -rf .sinopia_test_env ; mkdir .sinopia_test_env') and quit('fail');
+chdir $ENV{HOME};
+
+use Data::Dumper;
+my $pid;
+
+sub quit {
+	print $_[0]."\n";
+	exec("kill $pid ; exit 1");
+}
+
+# run sinopia in a child process
+if (($pid = fork()) == 0) {
+	exec "../../../bin/sinopia ../config.yaml";
+	die "exec failed";
+}
+
+system('mkdir node_modules') and quit('fail');
+system('npm set sinopia_test_config 12345') and quit('fail');
+
+if (`cat .npmrc` !~ /sinopia_test_config/) {
+	quit "npm is using wrong config";
+}
+
+system('npm set registry http://localhost:55501') and quit('fail');
+system(q{/bin/echo -e 'test\ntest\ns@s.s\n' | npm adduser}) and quit('fail');
+
+system('npm install jju') and quit('fail');
+(`node -e 'console.log(require("jju").parse("{qwerty:123}").qwerty+456)'` =~ /579/) or quit('fail');
+
+system('npm publish ../sinopia-test-1.2.3.tgz') and quit('fail');
+system('npm tag sinopia-test@1.2.3 meow') and quit('fail');
+system('npm install sinopia-test@meow') and quit('fail');
+
+(`node -e 'require("sinopia-test")'` =~ /w==w/) or quit('fail');
+
+quit("
+==================================================================
+All tests seem to be executed successfully, nothing is broken yet.
+==================================================================");
+