function test($data_xmin, $data_xmax, $data_ymin, $data_ymax)
{
global $test_verbose, $n_tests, $n_pass, $n_fail;
$n_tests++;
$q = compact('data_xmin', 'data_ymin', 'data_xmax', 'data_ymax');
$title = "({$data_xmin}, {$data_ymin}) : ({$data_xmax}, {$data_ymax})";
if ($test_verbose) {
testin($q);
}
$p = new PHPlot_test();
$p->SetDataValues(array(array('', $data_xmin, $data_ymin), array('', $data_xmax, $data_ymax)));
$p->SetDataType('data-data');
$p->SetPlotType('lines');
$p->test_CalcPlotAreaWorld();
# This returns an array with several protected variables: plot_xmin,
# plot_xmax, plot_ymin, plot_ymax, xtick, ytick:
$p->test_GetVars($q);
# Calculate number of tick intervals:
$q['nxtick'] = (int) (1.001 * ($q['plot_xmax'] - $q['plot_xmin']) / $q['xtick']);
$q['nytick'] = (int) (1.001 * ($q['plot_ymax'] - $q['plot_ymin']) / $q['ytick']);
if ($test_verbose) {
testout($q);
}
$result = validate($q);
if (empty($result)) {
$n_pass++;
} else {
$n_fail++;
echo "Failed test case {$n_tests}: {$title}\n{$result}\n";
}
}
