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MDL-29071 ddl: unittest for objects name length

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Marina Glancy
2013-11-21 12:39:59 +11:00
parent d33af201ab
commit caeb793db0
1 changed files with 53 additions and 0 deletions
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lib/ddl/tests/ddl_test.php
+53
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@@ -1892,6 +1892,59 @@ class ddl_testcase extends database_driver_testcase {
}
}
public function test_object_name() {
$gen = $this->tdb->get_manager()->generator;
// This will form short object name and max length should not be exceeded.
$table = 'tablename';
$fields = 'id';
$suffix = 'pk';
for ($i=0; $i<12; $i++) {
$this->assertLessThanOrEqual($gen->names_max_length,
strlen($gen->getNameForObject($table, $fields, $suffix)),
'Generated object name is too long. $i = '.$i);
}
// This will form too long object name always and it must be trimmed to exactly 30 chars.
$table = 'aaaa_bbbb_cccc_dddd_eeee_ffff_gggg';
$fields = 'aaaaa,bbbbb,ccccc,ddddd';
$suffix = 'idx';
for ($i=0; $i<12; $i++) {
$this->assertEquals($gen->names_max_length,
strlen($gen->getNameForObject($table, $fields, $suffix)),
'Generated object name is too long. $i = '.$i);
}
// Same test without suffix.
$table = 'bbbb_cccc_dddd_eeee_ffff_gggg_hhhh';
$fields = 'aaaaa,bbbbb,ccccc,ddddd';
$suffix = '';
for ($i=0; $i<12; $i++) {
$this->assertEquals($gen->names_max_length,
strlen($gen->getNameForObject($table, $fields, $suffix)),
'Generated object name is too long. $i = '.$i);
}
// This must only trim name when counter is 10 or more.
$table = 'cccc_dddd_eeee_ffff_gggg_hhhh_iiii';
$fields = 'id';
$suffix = 'idx';
// Since we don't know how long prefix is, loop to generate tablename that gives exactly maxlengh-1 length.
// Skip this test if prefix is too long.
while (strlen($table) && strlen($gen->prefix.preg_replace('/_/','',$table).'_id_'.$suffix) >= $gen->names_max_length) {
$table = rtrim(substr($table, 0, strlen($table) - 1), '_');
}
if (strlen($table)) {
$this->assertEquals($gen->names_max_length - 1,
strlen($gen->getNameForObject($table, $fields, $suffix)));
for ($i=0; $i<12; $i++) {
$this->assertEquals($gen->names_max_length,
strlen($gen->getNameForObject($table, $fields, $suffix)),
'Generated object name is too long. $i = '.$i);
}
}
}
// Following methods are not supported == Do not test
/*
public function testRenameIndex() {