[Avocado-devel] subclassing avocado

[Brian J. Murrell]

On Tue, 2018-11-06 at 17:20 +0100, Lukáš Doktor wrote:
> 
> The ":avocado: recursive" is used for test discovery. The main
> difference is that for test discovery we don't load the modules.
> Instead we use static analysis (using `ast`) to detect whether
> certain file is python and contains something inherited from
> `avocado.Test`.

Ahhh.

So that might be related to the issue I'm having:

util/apricot/apricot/__init__.py:
```
__all__ = ['ApricotTest']

from apricot.test import ApricotTest
```

util/apricot/apricot/test.py:
```from avocado import Test

class ApricotTest(Test):
    def setUp(self):
        self.log.info("setUp() executed from Apricot")

    def some_useful_method(self):
        return True

```

avocado detects that:

util/apricot/test_example.py
```
#!/usr/bin/python

'''
bla bla bla
'''

import sys
sys.path.append('./')

from apricot import ApricotTest

class MyTest(ApricotTest):
    """
    :avocado: recursive
    """
    def setUp(self):
        super(MyTest, self).setUp()
        self.log.info("setUp() executed from test_example.py")

    def test(self):
        """
        :avocado: tags=all
        """

        print "test()"
        self.assertTrue(self.some_useful_method())
```

is an instrumented avocado test and produces:

```
2018-11-06 12:16:34,560 test             L0240 INFO | START 1-util/apricot/test_example.py:MyTest.test
2018-11-06 12:16:34,695 test             L0005 INFO | setUp() executed from Apricot
2018-11-06 12:16:34,695 test_example     L0018 INFO | setUp() executed from test_example.py
2018-11-06 12:16:34,695 output           L0655 DEBUG| test()
```

However when much the same file is in a different location outside of
the apricot/ dir:
./test_example.py
```
#!/usr/bin/python

'''
bla bla bla
'''

import sys
sys.path.append('./util/apricot')

from apricot import ApricotTest

class MyTest(ApricotTest):
    """
    :avocado: recursive
    """
    def setUp(self):
        super(MyTest, self).setUp()
        self.log.info("setUp() executed from test_example.py")

    def test(self):
        """
        :avocado: tags=all
        """

        print "test()"
        self.assertTrue(self.some_useful_method())
```

is not detected as an instrumented test and it runs it as a simple
test:

```
2018-11-06 12:22:51,764 test             L0240 INFO | START 1-test_example.py
2018-11-06 12:22:51,898 process          L0389 INFO | Running '/home/brian/test_example.py'
2018-11-06 12:22:52,275 process          L0499 INFO | Command '/home/brian/test_example.py' finished with 0 after 0.372878074646s
2018-11-06 12:22:52,276 test             L0858 INFO | Exit status: 0
```

Why is the latter not being detected as an instrumented avocado test?

Cheers,
b.

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