Updated unit tests

tests/test_nested_sampler.py

@@ -1,5 +1,5 @@
 """
-Tests the NestedSampler class by fixing all parameters except for eccentricity.
+Tests the NestedSampler and MultiNest classes by fixing all parameters except for eccentricity.
 """
 
 from orbitize import system, sampler
@@ -40,25 +40,56 @@ def test_nested_sampler():
 
     # run both static & dynamic nested samplers
     mysampler = sampler.NestedSampler(sys)
-    _ = mysampler.run_sampler(bound="multi", pfrac=0.95, static=False, num_threads=8)
+    _ = mysampler.run_sampler(bound="multi", pfrac=0.95, static=False, num_threads=8, run_nested_kwargs={})
     print("Finished first run!")
 
     dynamic_eccentricities = mysampler.results.post[:, lab["ecc1"]]
     assert np.median(dynamic_eccentricities) == pytest.approx(ecc, abs=0.1)
 
-    _ = mysampler.run_sampler(bound="multi", static=True, num_threads=8)
+    _ = mysampler.run_sampler(bound="multi", static=True, num_threads=8, run_nested_kwargs={})
     print("Finished second run!")
 
     static_eccentricities = mysampler.results.post[:, lab["ecc1"]]
     assert np.median(static_eccentricities) == pytest.approx(ecc, abs=0.1)
 
-    # check that the static sampler raises an error when user tries to set pfrac
-    # for static sampler
-    try:
-        mysampler.run_sampler(pfrac=0.1, static=True)
-    except ValueError:
-        pass
+
+def test_multinest():
+    # generate data
+    mtot = 1.2  # total system mass [M_sol]
+    plx = 60.0  # parallax [mas]
+    orbit_frac = 95
+    data_table, sma = generate_synthetic_data(
+        orbit_frac,
+        mtot,
+        plx,
+        num_obs=30,
+    )
+
+    # assumed ecc value
+    ecc = 0.5
+
+    # initialize orbitize `System` object
+    sys = system.System(1, data_table, mtot, plx)
+    lab = sys.param_idx
+
+    ecc = 0.5  # eccentricity
+
+    # set all parameters except eccentricity to fixed values (same as used to generate data)
+    sys.sys_priors[lab["inc1"]] = np.pi / 4
+    sys.sys_priors[lab["sma1"]] = sma
+    sys.sys_priors[lab["aop1"]] = np.pi / 4
+    sys.sys_priors[lab["pan1"]] = np.pi / 4
+    sys.sys_priors[lab["tau1"]] = 0.8
+    sys.sys_priors[lab["plx"]] = plx
+    sys.sys_priors[lab["mtot"]] = mtot
+
+    # running the actual sampler is not possible without compiling MultiNest
+    mysampler = sampler.MultiNest(sys)
+    assert hasattr(mysampler, "run_sampler")
+    assert hasattr(mysampler, "results")
+    assert hasattr(mysampler, "system")
 
 
 if __name__ == "__main__":
     test_nested_sampler()
+    test_multinest()