Added test script to test extension module directly.

	new file:   test_ext.py

tests/test_ext.py

@@ -0,0 +1,116 @@
+# NOTE: If you want to ScannerBit from a different directory
+#       put this directory (ScannerBit/python) in the
+#       python environment variable "PYTHONPATH".
+
+import yaml
+from pyscannerbit.ScannerBit.python import ScannerBit as scan
+
+print("WITH_MPI=",scan.WITH_MPI) # Test if ScannerBit was compiled with MPI enabled
+
+# define likelihood, technically optional
+def like(m):
+    a = m["model1::x"]
+    scan.print("my_param", 0.5) # can print custom parameters 
+
+    return -a*a/2.0
+
+# define prior, optional
+def prior(vec, map):
+    # tell ScannerBit that the hypergrid dimension is 1
+    scan.ensure_size(vec, 1) # this needs to be the first line!
+
+    map["model1::x"] = 5.0 - 10.0*vec[0]
+
+# declare scan object
+myscan = scan.scan(True)
+
+# run scan from inifile
+# myscan.run(inifile="ScannerBit.yaml", lnlike={"LogLike": like}, prior=prior, restart=True)
+
+# Run scan from dict instead of YAML file
+settings = {
+"Parameters": {
+  "model1": {
+    "x": None,
+    }
+  },
+"Priors": {
+  "x_prior": {
+    "prior_type": 'flat',
+    "parameters": ['model1::x'],
+    "range": [1.0, 40.0],
+    }
+  },
+"Printer": {
+  "printer": "hdf5",
+  "options": {
+    "output_file": "results.hdf5",
+    "group": "/",
+    "delete_file_on_restart": "true",
+    }
+  },
+"Scanner": {
+  "scanners": {
+    "twalk": {
+      "plugin": "twalk",
+      "like": "LogLike",
+      "tolerance": 1.003,
+      "kwalk_ratio": 0.9,
+      "projection_dimension": 4
+      },
+    "multinest": {
+      "plugin": "multinest",
+      "like": "LogLike",
+      "nlive": 2000,
+      "tol": 0.1
+      }
+    },    
+  "use_scanner": "multinest",
+  "objectives": {
+    "gaussian": {
+      "plugin": "gaussian",
+      "purpose": "LogLike",
+      "parameters": {
+        "param...20": None,
+        "range": [-5, 5]
+        }
+      }
+    }
+  },
+"KeyValues": {
+  "default_output_path": "pyscannerbit_run_data/",
+  "likelihood": {
+    "model_invalid_for_lnlike_below": -1e6
+    }
+  }
+}
+
+myscan.run(inifile=settings, lnlike={"LogLike": like}, prior=prior, restart=True)
+
+###
+### can run diagnostics
+### NOTE: can specify any number of object to run diagnostics on
+###       e.g. myscan.diagnostics("twalk", "multinest", "ais", "priors", "scanners", ...)
+###
+# myscan.diagnostics("twalk")
+
+###
+### can use with pyyaml!
+### NOTE: yaml vector keys, [...], must be preceded by !!/python/tuple 
+###
+# with open("ScannerBit.yaml", 'r') as f:
+#     try:
+#         inifile = yaml.load(f)
+#     except yaml.YAMLError as exc:
+#         print(exc)
+# 
+# myscan.run(inifile=inifile, lnlike={"LogLike": like}, prior=prior, restart=True)
+
+###
+### or can also run multiple proposes
+###
+# lnlike = {
+#     "LogLike1": like1
+#     "LogLike2": like2
+# }
+# myscan.run(inifile="ScannerBit.yaml", lnlike=lnlike, prior=prior, restart=True)