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authorStephen Warren <swarren@nvidia.com>2016-01-22 12:30:08 -0700
committerSimon Glass <sjg@chromium.org>2016-01-28 21:01:22 -0700
commit636f38d83a7e0e6ca076ae65e086c800337fb3a3 (patch)
tree9059391d552bf53869a1d73270a3213c83128ac1 /test
parentd314e247e1aede35cdfe448ad9262edc0d90a9ba (diff)
test/py: move U-Boot respawn trigger to the test core
Prior to this change, U-Boot was lazilly (re-)spawned if/when a test attempted to interact with it, and no active connection existed. This approach was simple, yet had the disadvantage that U-Boot might be spawned in the middle of a test function, e.g. after the test had already performed actions such as creating data files, etc. In that case, this could cause the log to contain the sequence (1) some test logs, (2) U-Boot's boot process, (3) the rest of that test's logs. This isn't optimally readable. This issue will affect the upcoming DFU and enhanced UMS tests. This change converts u_boot_console to be a function-scoped fixture, so that pytest attempts to re-create the object for each test invocation. This allows the fixture factory function to ensure that U-Boot is spawned prior to every test. In practice, the same object is returned each time so there is essentially no additional overhead due to this change. This allows us to remove: - The explicit ensure_spawned() call from test_sleep, since the core now ensures that the spawn happens before the test code is executed. - The laxy calls to ensure_spawned() in the u_boot_console_* implementations. The one downside is that test_env's "state_ttest_env" fixture must be converted to a function-scoped fixture too, since a module-scoped fixture cannot use a function-scoped fixture. To avoid overhead, we use the same trick of returning the same object each time. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'test')
-rw-r--r--test/py/conftest.py3
-rw-r--r--test/py/tests/test_env.py8
-rw-r--r--test/py/tests/test_sandbox_exit.py2
-rw-r--r--test/py/tests/test_sleep.py4
-rw-r--r--test/py/u_boot_console_base.py2
-rw-r--r--test/py/u_boot_console_sandbox.py1
6 files changed, 8 insertions, 12 deletions
diff --git a/test/py/conftest.py b/test/py/conftest.py
index e1674dfce05..38aa3f922a8 100644
--- a/test/py/conftest.py
+++ b/test/py/conftest.py
@@ -227,7 +227,7 @@ def pytest_generate_tests(metafunc):
vals = subconfig.get(fn + 's', [])
metafunc.parametrize(fn, vals)
-@pytest.fixture(scope='session')
+@pytest.fixture(scope='function')
def u_boot_console(request):
'''Generate the value of a test's u_boot_console fixture.
@@ -238,6 +238,7 @@ def u_boot_console(request):
The fixture value.
'''
+ console.ensure_spawned()
return console
tests_not_run = set()
diff --git a/test/py/tests/test_env.py b/test/py/tests/test_env.py
index a3e8dd30330..557c3afe5c0 100644
--- a/test/py/tests/test_env.py
+++ b/test/py/tests/test_env.py
@@ -77,11 +77,15 @@ class StateTestEnv(object):
return var
n += 1
-@pytest.fixture(scope='module')
+ste = None
+@pytest.fixture(scope='function')
def state_test_env(u_boot_console):
'''pytest fixture to provide a StateTestEnv object to tests.'''
- return StateTestEnv(u_boot_console)
+ global ste
+ if not ste:
+ ste = StateTestEnv(u_boot_console)
+ return ste
def unset_var(state_test_env, var):
'''Unset an environment variable.
diff --git a/test/py/tests/test_sandbox_exit.py b/test/py/tests/test_sandbox_exit.py
index 2aa8eb4abc6..1ec3607eb28 100644
--- a/test/py/tests/test_sandbox_exit.py
+++ b/test/py/tests/test_sandbox_exit.py
@@ -13,7 +13,6 @@ def test_reset(u_boot_console):
u_boot_console.run_command('reset', wait_for_prompt=False)
assert(u_boot_console.validate_exited())
- u_boot_console.ensure_spawned()
@pytest.mark.boardspec('sandbox')
def test_ctrl_c(u_boot_console):
@@ -21,4 +20,3 @@ def test_ctrl_c(u_boot_console):
u_boot_console.kill(signal.SIGINT)
assert(u_boot_console.validate_exited())
- u_boot_console.ensure_spawned()
diff --git a/test/py/tests/test_sleep.py b/test/py/tests/test_sleep.py
index 64f1ddf9a09..437b6bb9fea 100644
--- a/test/py/tests/test_sleep.py
+++ b/test/py/tests/test_sleep.py
@@ -9,10 +9,6 @@ def test_sleep(u_boot_console):
'''Test the sleep command, and validate that it sleeps for approximately
the correct amount of time.'''
- # Do this before we time anything, to make sure U-Boot is already running.
- # Otherwise, the system boot time is included in the time measurement.
- u_boot_console.ensure_spawned()
-
# 3s isn't too long, but is enough to cross a few second boundaries.
sleep_time = 3
tstart = time.time()
diff --git a/test/py/u_boot_console_base.py b/test/py/u_boot_console_base.py
index 520f9a9e9f3..10fe3dbdd37 100644
--- a/test/py/u_boot_console_base.py
+++ b/test/py/u_boot_console_base.py
@@ -144,8 +144,6 @@ class ConsoleBase(object):
command string and emitted the subsequent command prompts.
'''
- self.ensure_spawned()
-
if self.at_prompt and \
self.at_prompt_logevt != self.logstream.logfile.cur_evt:
self.logstream.write(self.prompt, implicit=True)
diff --git a/test/py/u_boot_console_sandbox.py b/test/py/u_boot_console_sandbox.py
index 88b137e8c3a..eb84150a1e4 100644
--- a/test/py/u_boot_console_sandbox.py
+++ b/test/py/u_boot_console_sandbox.py
@@ -51,7 +51,6 @@ class ConsoleSandbox(ConsoleBase):
Nothing.
'''
- self.ensure_spawned()
self.log.action('kill %d' % sig)
self.p.kill(sig)