start and run work

dist.ini

@@ -80,6 +80,7 @@ goto::file                 = 0.005
 File::Path                 = 2.11
 List::Util                 = 1.44
 IO::Handle                 = 1.27
+Linux::Inotify2            = 2.3
 YAML::Tiny                 = 0
 Data::UUID                 = 0
 File::Find                 = 0
@@ -111,6 +112,7 @@ Text::ParseWords           = 0
 
 [Prereqs / TestRequires]
 File::Copy = 0
+Child = 0
 
 [Prereqs / DevelopRequires]
 Test::Spelling = 0.12   ; for xt/author/pod-spell.t

lib/App/Yath/Client.pm

@@ -0,0 +1,51 @@
+package App::Yath::Client;
+use strict;
+use warnings;
+
+use Carp qw/croak/;
+
+use Test2::Harness::IPC::Protocol;
+
+use parent 'Test2::Harness';
+use Test2::Harness::Util::HashBase qw{
+    <settings
+    +ipc +connection
+};
+
+sub init {
+    my $self = shift;
+
+    my $settings = $self->{+SETTINGS} or croak "'settings' is a required attribute";
+    croak "'ipc' is not set, and there is no 'ipc' category in the settings"
+        unless $self->{+IPC} or $settings->ipc;
+
+    $self->ipc;
+
+    $self->SUPER::init();
+}
+
+sub ipc {
+    my $self = shift;
+
+    return $self->{+IPC} if $self->{+IPC};
+
+    my $settings = $self->{+SETTINGS};
+    croak "No 'ipc' category in settings" unless $settings->ipc;
+    my $ipc_s = App::Yath::Options::IPC->vivify_ipc($settings);
+
+    return $self->{+IPC} = Test2::Harness::IPC::Protocol->new(protocol => $ipc_s->{protocol}, peer_pid => $ipc_s->{peer_pid});
+}
+
+sub connect {
+    my $self = shift;
+
+    return $self->{+CONNECTION} if $self->{+CONNECTION};
+
+    my $settings = $self->{+SETTINGS};
+    croak "No 'ipc' category in settings" unless $settings->ipc;
+    my $ipc_s = App::Yath::Options::IPC->vivify_ipc($settings);
+
+    return $self->{+CONNECTION} = $self->ipc->connect($ipc_s->{address}, $ipc_s->{port}, peer_pid => $ipc_s->{peer_pid});
+}
+
+1;