3 This chapter describes the tests in the `/test` directory, how they are
4 structured and how to extend them. For a quick introduction on how to run
5 the tests, see the [Development setup chapter](Development-Environment.md).
9 There are two kind of tests in this test suite. There are functional tests
10 which test the API interface using a BDD test framework and there are unit
11 tests for the Python code.
13 This test directory is structured as follows:
16 -+- bdd Functional API tests
18 | +- steps Step implementations for test descriptions
19 | +- osm2pgsql Tests for data import via osm2pgsql
20 | +- db Tests for internal data processing on import and update
21 | +- api Tests for API endpoints (search, reverse, etc.)
23 +- python Python unit tests
24 +- testdb Base data for generating API test database
25 +- testdata Additional test data used by unit tests
28 ## Python Unit Tests (`test/python`)
30 Unit tests for Python code can be found in the `python/` directory. The goal is
31 to have complete coverage of the Python library in `nominatim`.
33 To execute the tests run
41 The name of the pytest binary depends on your installation.
43 ## BDD Functional Tests (`test/bdd`)
45 Functional tests are written as BDD instructions. For more information on
46 the philosophy of BDD testing, see the
47 [Behave manual](http://pythonhosted.org/behave/philosophy.html).
49 The following explanation assume that the reader is familiar with the BDD
50 notations of features, scenarios and steps.
52 All possible steps can be found in the `steps` directory and should ideally
57 To run the functional tests, do
62 The tests can be configured with a set of environment variables (`behave -D key=val`):
64 * `TEMPLATE_DB` - name of template database used as a skeleton for
65 the test databases (db tests)
66 * `TEST_DB` - name of test database (db tests)
67 * `API_TEST_DB` - name of the database containing the API test data (api tests)
68 * `API_TEST_FILE` - OSM file to be imported into the API test database (api tests)
69 * `API_ENGINE` - webframe to use for running search queries, same values as
70 `nominatim serve --engine` parameter
71 * `DB_HOST` - (optional) hostname of database host
72 * `DB_PORT` - (optional) port of database on host
73 * `DB_USER` - (optional) username of database login
74 * `DB_PASS` - (optional) password for database login
75 * `REMOVE_TEMPLATE` - if true, the template and API database will not be reused
76 during the next run. Reusing the base templates speeds
77 up tests considerably but might lead to outdated errors
78 for some changes in the database layout.
79 * `KEEP_TEST_DB` - if true, the test database will not be dropped after a test
80 is finished. Should only be used if one single scenario is
81 run, otherwise the result is undefined.
83 Logging can be defined through command line parameters of behave itself. Check
84 out `behave --help` for details. Also have a look at the 'work-in-progress'
85 feature of behave which comes in handy when writing new tests.
87 ### API Tests (`test/bdd/api`)
89 These tests are meant to test the different API endpoints and their parameters.
90 They require to import several datasets into a test database. This is normally
91 done automatically during setup of the test. The API test database is then
92 kept around and reused in subsequent runs of behave. Use `behave -DREMOVE_TEMPLATE`
93 to force a reimport of the database.
95 The official test dataset is saved in the file `test/testdb/apidb-test-data.pbf`
96 and compromises the following data:
98 * Geofabrik extract of Liechtenstein
99 * extract of Autauga country, Alabama, US (for tests against Tiger data)
100 * additional data from `test/testdb/additional_api_test.data.osm`
102 API tests should only be testing the functionality of the website frontend code.
103 Most tests should be formulated as BDD DB creation tests (see below) instead.
105 ### DB Creation Tests (`test/bdd/db`)
107 These tests check the import and update of the Nominatim database. They do not
108 test the correctness of osm2pgsql. Each test will write some data into the `place`
109 table (and optionally the `planet_osm_*` tables if required) and then run
110 Nominatim's processing functions on that.
112 These tests need to create their own test databases. By default they will be
113 called `test_template_nominatim` and `test_nominatim`. Names can be changed with
114 the environment variables `TEMPLATE_DB` and `TEST_DB`. The user running the tests
115 needs superuser rights for postgres.
117 ### Import Tests (`test/bdd/osm2pgsql`)
119 These tests check that data is imported correctly into the place table. They
120 use the same template database as the DB Creation tests, so the same remarks apply.