Fix CLI and add test. (#70)

.gitignore

@@ -4,4 +4,6 @@
 /build/
 /dev/
 /bin/
-/dist/
+/dist/
+*.pyc
+*pytest_cache

copper/cli.py

@@ -5,26 +5,33 @@
 """
 
 import click, json, inspect
-import copper.chiller as chiller
+
+# import copper.Chiller as chiller
+from copper.chiller import Chiller
 
 
 @click.group()
 def cli():
     """
-    Command Line Interface for Copper
+    Copper
+
+    A performance curve generator for building energy simulation
     """
 
 
 @cli.command()
 @click.argument("input_file", type=click.File("rb"), required=True)
 def run(input_file):
+    """Run a set of Copper instructions through a JSON input file. See 'Using Copper's command line interface in the Quickstart Guide section of the documenation for more information."""
     try:
         f = json.load(input_file)
     except:
         raise ValueError("Could not read the input file. A JSON file is expected.")
     for eqp, eqp_props in f.items():
         # Make sure that the equipment is supported by Copper
-        assert eqp_props["eqp_type"].lower() in ["chiller"]
+        assert eqp_props["eqp_type"].lower() in [
+            "chiller"
+        ], "Equipment type not currently supported by Copper."
 
         # Get properties for equipment type
         eqp_type_props = inspect.getfullargspec(eval(eqp_props["eqp_type"]).__init__)[0]

tests/data/cli_input_file.json

@@ -0,0 +1,29 @@
+{
+    "Quickstart_Guide_Chiller":{
+        "eqp_type":"Chiller",
+        "compressor_type":"screw",
+        "condenser_type":"water",
+        "compressor_speed":"constant",
+        "ref_cap":300,
+        "ref_cap_unit":"ton",
+        "full_eff":0.61,
+        "full_eff_unit":"kw/ton",
+        "part_eff":0.52,
+        "part_eff_unit":"kw/ton",
+        "sim_engine":"energyplus",
+        "model":"ect_lwt",
+        "do":{
+            "generate_set_of_curves":{
+                "vars":[
+                "eir-f-plr"
+                ],
+                "method":"nearest_neighbor",
+                "tol":0.05,
+                "export_path":"./",
+                "export_format":"json",
+                "export_name":"Quickstart_Guide_Chiller",
+                "random_seed":1
+            }
+        }
+    }
+}

tests/test_cli.py

@@ -0,0 +1,16 @@
+import click, logging
+from click.testing import CliRunner
+from copper.cli import run
+
+
+def test_cli_incorrect_file():
+    runner = CliRunner()
+    result = runner.invoke(run, ["test"])
+    assert "'test': No such file or directory" in result.output
+
+
+def test_cli_correct(caplog):
+    caplog.set_level(logging.INFO)
+    runner = CliRunner()
+    result = runner.invoke(run, ["./tests/data/cli_input_file.json"])
+    assert "Target met after 13 generations."