Changes to spped up the CI

1) Restrict the dynamic dynesty test to maxcalls of 100
2) Split the sampler_test out of the main tests and into a separate
node. This means the sampler_test doesn't contribute to the coverage

.gitlab-ci.yml

@@ -51,7 +51,7 @@ python-3.7:
     - flake8 .
 
     # Run tests and collect coverage data
-    - pytest --cov=bilby
+    - pytest --cov=bilby --durations 10
     - coverage html
     - coverage-badge -o coverage_badge.svg -f
 
@@ -75,10 +75,28 @@ python-3.6:
 
     - pytest
 
+# test samplers on python 3.7
+python-3.7-samplers:
+  stage: test
+  image: bilbydev/v2-dockerfile-test-suite-python37
+  script:
+    - python -m pip install .
+
+    - pytest test/sampler_test.py --durations 10
+
+# test samplers on python 3.6
+python-3.6-samplers:
+  stage: test
+  image: bilbydev/v2-dockerfile-test-suite-python36
+  script:
+    - python -m pip install .
+
+    - pytest test/sampler_test.py
+
 # Tests run at a fixed schedule rather than on push
 scheduled-python-3.7:
   stage: test
-  image: bilbydev/bilby-test-suite-python37
+  image: bilbydev/v2-dockerfile-test-suite-python37
   only:
     - schedules
   script:

setup.cfg

@@ -9,6 +9,7 @@ addopts =
     --ignore test/gw_example_test.py
     --ignore test/example_test.py
     --ignore test/sample_from_the_prior_test.py
+    --ignore test/sampler_test.py
 
 [metadata]
 license_file = LICENSE.md

test/sampler_test.py

@@ -552,7 +552,8 @@ class TestRunningSamplers(unittest.TestCase):
     def test_run_dynamic_dynesty(self):
         _ = bilby.run_sampler(
             likelihood=self.likelihood, priors=self.priors, sampler='dynamic_dynesty',
-            nlive=100, save=False)
+            nlive_init=100, nlive_batch=100, dlogz_init=1.0, maxbatch=0,
+            maxcall=100, bound="single", save=False)
 
     def test_run_emcee(self):
         _ = bilby.run_sampler(