Test chartjs images in dashboard emails

Author: sunnavy

t/mail/dashboard-chartjs.t

@@ -0,0 +1,109 @@
+use strict;
+use warnings;
+
+use RT::Test
+    tests  => undef,
+    config => qq{Set(\$EmailDashboardJSChartImages, 1);
+Set(\@ChromeLaunchArguments, '--no-sandbox');
+Set(\$ChromePath, '@{[$ENV{RT_TEST_CHROME_PATH} // '']}');};
+
+plan skip_all => 'Need WWW::Mechanize::Chrome and a chrome-based browser'
+    unless RT::StaticUtil::RequireModule("WWW::Mechanize::Chrome")
+    && ( $ENV{RT_TEST_CHROME_PATH} || WWW::Mechanize::Chrome->find_executable('chromium-browser') );
+
+my $root = RT::Test->load_or_create_user( Name => 'root' );
+
+my ( $baseurl, $m ) = RT::Test->started_ok;
+ok( $m->login, 'logged in' );
+my $ticket = RT::Ticket->new($RT::SystemUser);
+$ticket->Create(
+    Queue   => 'General',
+    Subject => 'Test ChartJS',
+);
+ok( $ticket->id, 'created ticket' );
+
+$m->get_ok(q{/Search/Chart.html?Query=Subject LIKE 'test ChartJS'});
+$m->submit_form(
+    form_name => 'SaveSearch',
+    fields    => {
+        SavedSearchDescription => 'chart foo',
+        SavedSearchOwner       => 'RT::User-' . $root->id,
+        ChartStyle             => 'bar',
+    },
+    button => 'SavedSearchSave',
+);
+
+# first, create and populate a dashboard
+$m->get_ok('/Dashboards/Modify.html?Create=1');
+$m->form_name('ModifyDashboard');
+$m->field( 'Name' => 'dashboard foo' );
+$m->click_button( value => 'Create' );
+
+my ($dashboard_id) = ( $m->uri =~ /id=(\d+)/ );
+ok( $dashboard_id, "got an ID for the dashboard, $dashboard_id" );
+
+$m->follow_link_ok( { text => 'Content' } );
+
+# add content, Chart: chart foo, to dashboard body
+# we need to get the saved search id from the content before submitting the form.
+my $regex = qr/data-type="(\w+)" data-name="RT::User-/ . $root->id . qr/-SavedSearch-(\d+)"/;
+my ( $saved_search_type, $saved_search_id ) = $m->content =~ /$regex/;
+ok( $saved_search_type, "got a type for the saved search, $saved_search_type" );
+ok( $saved_search_id,   "got an ID for the saved search, $saved_search_id" );
+
+$m->submit_form_ok(
+    {
+        form_name => 'UpdateSearches',
+        fields    => {
+            dashboard_id => $dashboard_id,
+            body         => $saved_search_type . "-" . "RT::User-" . $root->id . "-SavedSearch-" . $saved_search_id,
+        },
+        button => 'UpdateSearches',
+    },
+    "add content 'Chart: chart foo' to dashboard body"
+);
+
+like( $m->uri, qr/results=[A-Za-z0-9]{32}/, 'URL redirected for results' );
+$m->content_contains('Dashboard updated');
+
+$m->follow_link_ok( { text => 'Subscription' } );
+$m->form_name('SubscribeDashboard');
+$m->field( 'Frequency' => 'daily' );
+$m->field( 'Hour'      => '06:00' );
+$m->click_button( name => 'Save' );
+$m->content_contains('Subscribed to dashboard dashboard foo');
+
+RT::Test->run_and_capture(
+    command => $RT::SbinPath . '/rt-email-dashboards',
+    all     => 1,
+);
+
+my @mails = RT::Test->fetch_caught_mails;
+is @mails, 1, "got a dashboard mail";
+
+
+# can't use parse_mail here is because it deletes all attachments
+# before we can call bodyhandle :/
+use RT::EmailParser;
+my $parser = RT::EmailParser->new;
+my $mail   = $parser->ParseMIMEEntityFromScalar( $mails[0] );
+like( $mail->head->get('Subject'), qr/Daily Dashboard: dashboard foo/, 'mail subject' );
+
+my ($mail_image) = grep { $_->mime_type eq 'image/png' } $mail->parts;
+ok( $mail_image, 'mail contains image attachment' );
+require Imager;                                    # Imager is a dependency of WWW::Mechanize::Chrome
+my $imager = Imager->new();
+$imager->open( data => $mail_image->bodyhandle->as_string, type => 'png' );
+is( $imager->bits, 8, 'image bit depth is 8' );    # Images created by GD::Graph have 4-bit color depth
+
+
+# The first bar's color is #a6cee3, which is (166, 206, 227),
+# on Apple Display preset, it's converted to (174, 205, 225).
+
+my $bar_color  = $imager->getpixel( x => 300, y => 200 );
+my $srgb_color = Imager::Color->new( 166, 206, 227 );
+my $p3_color   = Imager::Color->new( 174, 205, 225 );
+ok( $bar_color->equals( other => $srgb_color ) || $bar_color->equals( other => $p3_color ),
+    'image bar color is #a6cee3' );
+
+done_testing;