hydra-notify: move BuildStarted processing to an Event

t/Event/BuildStarted.t

@@ -0,0 +1,77 @@
+use strict;
+use Setup;
+
+my %ctx = test_init();
+
+require Hydra::Schema;
+require Hydra::Model::DB;
+use Hydra::Event;
+use Hydra::Event::BuildStarted;
+
+use Test2::V0;
+use Test2::Tools::Exception;
+use Test2::Tools::Mock qw(mock_obj);
+
+my $db = Hydra::Model::DB->new;
+hydra_setup($db);
+
+my $project = $db->resultset('Projects')->create({name => "tests", displayname => "", owner => "root"});
+my $jobset = createBaseJobset("basic", "basic.nix", $ctx{jobsdir});
+ok(evalSucceeds($jobset),               "Evaluating jobs/basic.nix should exit with return code 0");
+is(nrQueuedBuildsForJobset($jobset), 3, "Evaluating jobs/basic.nix should result in 3 builds");
+
+subtest "Parsing build_started" => sub {
+    like(
+        dies { Hydra::Event::parse_payload("build_started", "") },
+        qr/one argument/,
+        "empty payload"
+    );
+    like(
+        dies { Hydra::Event::parse_payload("build_started", "abc123\tabc123") },
+        qr/only one argument/,
+        "two arguments"
+    );
+
+    like(
+        dies { Hydra::Event::parse_payload("build_started", "abc123") },
+        qr/should be an integer/,
+        "not an integer"
+    );
+    is(
+        Hydra::Event::parse_payload("build_started", "19"),
+        Hydra::Event::BuildStarted->new(19),
+        "Valid parse"
+    );
+};
+
+subtest "load" => sub {
+    my $build = $db->resultset('Builds')->search(
+      { },
+      { limit => 1 }
+    )->next;
+
+    my $event = Hydra::Event::BuildStarted->new($build->id);
+
+    $event->load($db);
+
+    is($event->{"build"}->id, $build->id, "The build record matches.");
+
+    # Create a fake "plugin" with a buildStarted sub, the sub sets this
+    # global passedBuild variable.
+    my $passedBuild;
+    my $plugin = {};
+    my $mock = mock_obj $plugin => (
+        add => [
+            "buildStarted" => sub {
+                my ($self, $build) = @_;
+                $passedBuild = $build;
+            }
+        ]
+    );
+
+    $event->execute($db, $plugin);
+
+    is($passedBuild->id, $build->id, "The plugin's buildStarted hook is called with the proper build");
+};
+
+done_testing;