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* additions by Reinier, mantis #21895

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packages/fcl-db/tests/README.txt
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@ -1,12 +1,13 @@
This directory contains a framework to test several TDataset descendents.
A lot of these tests are only applicable for SQL databases, but there are several tests that also apply to other objects, such as TBufDataset.
The framework is based on the fpcunit unit-test system. The tests can be
The framework is based on the fpcunit unit test system. The tests can be
executed using any fpcunit-testrunner. For example the console and graphical
fpcunit-test runners from Lazarus.
fpcunit test runners from Lazarus.
Simply add the test* units in this directory to the uses statement of the
test-runner and all tests will get registered and executed.
test runner and all tests will get registered and executed.
An simple test-runner (dbtestframework.pas) which generates XML-output is
A simple test runner (dbtestframework.pas) which generates XML output is
included in this directory.
To test a TDataset descendent, a 'connector' is needed to test the database.
@ -14,14 +15,25 @@ To add a new connector, create a new *toolsunit.pas file, then add it to
the uses section in 'dbtestframework.pas'. Several connectors are available
in the '*toolsunit.pas' files.
The connector must inherit from TDBConnector in toolsunit.pas.
The connector implements two different kinds of datasets:
- a dataset with as many different kinds of fields as possible (see the *FieldDataSets subroutines).
- a dataset with only a few fields (ID and NAME), but a lot (well, MaxDataset) of different records (see the *NDataSets subroutines)
CreateNDatasets and CreateFieldDataset should be implemented to set up data stores (e.g. database tables) and fill these stores with test data for the respective datasets.
The corresponding Drop*Dataset procedures must drop the tables/delete the data.
GetNDataset and GetFieldsDataset should return the relevant dataset in closed state so the tests can open them and work with them.
They call InternalGetNDataset and InternalGetFieldDataset which should be implemented in all descendents and returns the relevant dataset, closed, with all data.
Toolsunit.pas defines some variables for use, e.g. testValuesCount is the number of records/test values in the FieldDataset dataset; MaxDataset is the same for NDataset.
See e.g. the SQLDBToolsUnit for the implementation for SQL Databases.
Which connector is currently used is dependent on the 'database.ini'
configuration file. Also some settings which are connector-dependent can be set
in that file. See 'database.ini.txt' for an example.
I hope this is enough information to get you started,
Joost van der Sluis (30-12-2006)
Joost van der Sluis (30-12-2006),
amended by Reinier Olislagers (April 2012)