mirror of
https://github.com/DBD-SQLite/DBD-SQLite
synced 2025-06-07 14:19:10 -04:00
73 lines
2.3 KiB
Perl
73 lines
2.3 KiB
Perl
use strict;
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use warnings;
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use lib "t/lib";
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use SQLiteTest;
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use Test::More;
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BEGIN { requires_sqlite('3.6.19') }
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use if -d ".git", "Test::FailWarnings";
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# following tests are from http://www.sqlite.org/foreignkeys.html
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my $dbh = connect_ok( RaiseError => 1, PrintError => 0, AutoCommit => 1 );
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$dbh->do("PRAGMA foreign_keys = ON");
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ok $dbh->do("CREATE TABLE artist (
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artistid INTEGER PRIMARY KEY,
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artistname TEXT
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)");
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ok $dbh->do("CREATE TABLE track (
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trackid INTEGER PRIMARY KEY,
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trackname TEXT,
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trackartist INTEGER,
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FOREIGN KEY(trackartist) REFERENCES artist(artistid)
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)");
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ok insert_artist(1, "Dean Martin");
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ok insert_artist(2, "Frank Sinatra");
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ok insert_track(11, "That's Amore", 1);
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ok insert_track(12, "Christmas Blues", 1);
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ok insert_track(13, "My Way", 2);
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# This fails because the value inserted into the trackartist
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# column (3) does not correspond to row in the artist table.
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ok !insert_track(14, "Mr. Bojangles", 3);
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ok $@ =~ qr/foreign key constraint failed/i;
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# This succeeds because a NULL is inserted into trackartist. A
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# corresponding row in the artist table is not required in this case.
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ok insert_track(14, "Mr. Bojangles", undef);
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# Trying to modify the trackartist field of the record after it has
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# been inserted does not work either, since the new value of
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# trackartist (3) still does not correspond to any row in the
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# artist table.
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ok !update_track(3, "Mr. Bojangles");
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ok $@ =~ /foreign key constraint failed/i;
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# Insert the required row into the artist table. It is then possible
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# to update the inserted row to set trackartist to 3 (since a
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# corresponding row in the artist table now exists).
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ok insert_artist(3, "Sammy Davis Jr.");
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ok update_track(3, "Mr. Bojangles");
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# Now that "Sammy Davis Jr." (artistid = 3) has been added to the
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# database, it is possible to INSERT new tracks using this artist
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# without violating the foreign key constraint:
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ok insert_track(15, "Boogie Woogie", 3);
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sub insert_artist { _do("INSERT INTO artist (artistid, artistname) VALUES (?, ?)", @_ ); }
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sub insert_track { _do("INSERT INTO track (trackid, trackname, trackartist) VALUES (?, ?, ?)", @_); }
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sub update_track { _do("UPDATE track SET trackartist = ? WHERE trackname = ?", @_); }
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sub _do { eval { $dbh->do(shift, undef, @_) }; }
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done_testing;
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