More test cases and framework stuff. t/62-api.t is currently not working.

git-svn-id: https://ledger-smb.svn.sourceforge.net/svnroot/ledger-smb/trunk@2403 4979c152-3d1c-0410-bac9-87ea11338e46

1 files changed, 126 insertions, 0 deletions

diff --git a/LedgerSMB/DBTest.pm b/LedgerSMB/DBTest.pm
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+
+=head1 NAME
+
+LedgerSMB::DBTest - LedgerSMB commit filter for test cases.
+
+=head1 SYOPSIS
+
+This module creates a DBI-like interface but ensures autocommit is off, 
+and filters commit statements such that they don't do anything.  This can be 
+used for making API test cases which involve DB commits safe for production 
+environments.
+
+=head1 USAGE
+
+Both LedgerSMB.pm and LedgerSMB/Form.pm assign a global database handler for all
+database access within a script in the dbh property (for example,
+$request->{dbh} or $form->{dbh}).  By setting this early to a
+LedgerSMB::DBTest (instead of a DBI object), the tests can be made safe.
+
+However, there are a few limitations to be aware of.  One cannot run tests
+through the standard request handler and use this module. Hence this is limited
+to unit tests of files in the LedgerSMB, scripts, and bin directories.
+
+Here is an example of how this could be done:
+
+ my $lsmb = LedgerSMB->new();
+ $lsmb->merge($testdata);
+ my $dbh = LedgerSMB::DBTest->connect("dbi:Pg:dbname=$company", "$username",
+     "$password",)
+ $lsmb->{dbh} = $dbh;
+
+
+=head1 METHODS
+
+=over
+
+=item connect($dsn, $user, $pass)
+
+Connects to the database and returns a LedgerSMB::DBTest object
+
+=item commit()
+
+Tests the current transaction (issues a 'SELECT 1;' to the database).  If this
+is successful returns 1, if not, rolls back and returns false.
+
+Note that this means all past tests are rolled back and this is inconsistent
+with normal transactional behavior.
+
+=item prepare()
+
+Returns a statement handle, via the private DBI database handle.
+
+=item do() 
+
+passes this statement on to the private database handle
+
+=item errstr()
+
+passes this call on to the private database handle
+
+=item err()
+
+passes this call on to the private database handle
+
+=item rollback()
+
+passes this call on to the private database handle.  Note that this will roll
+back all statements issues through this object.
+
+=back
+
+=cut
+
+use DBI;
+package LedgerSMB::DBTest;
+
+sub DISTROY {
+    my ($self) = @_;
+    $self->disconnect;
+}
+
+sub connect{
+    my ($class, $dsn, $user, $pass) = @_;
+    my $self = {};
+    $self->{_dbh} = DBI->connect($dsn, $user, $pass, {AutoCommit => 0 });
+    bless $self, $class;
+    return $self;
+}
+
+sub disconnect {
+    my ($self) = @_;
+    $self->rollback;
+    $self->{_dbh}->disconnect;
+}
+
+sub do {
+    my ($self, $statement) = @_;
+    return $self->{_dbh}->do($statement);
+}
+
+sub err{
+    my ($self) = @_;
+    return $self->{_dbh}->err;
+}
+
+sub errstr{
+    my ($self) = @_;
+    return $self->{_dbh}->errstr;
+}
+
+sub prepare{
+    my ($self, $statement) = @_;
+    return $self->{_dbh}->prepare($statement);
+}
+
+sub rollback {
+    my ($self) = @_;
+    return $self->{_dbh}->rollback;
+}
+
+sub state{
+    my ($self) = @_;
+    return $self->{_dbh}->state;
+}
+
+1;