fix(config): make config file keys case sensitive

Since the configparser library by default parses keys case insensitive
(all lowercase), certain mappings, especially in the pulseaudio modules,
could fail ("internal" pulseaudio device names are matched against
entries in the configuration).

fixes #992

bumblebee_status/core/config.py

@@ -240,10 +240,15 @@ class Config(util.store.Store):
     :param filename: path to the file to load
     """
 
-    def load_config(self, filename):
-        if os.path.exists(filename):
+    def load_config(self, filename, content=None):
+        if os.path.exists(filename) or content != None:
             log.info("loading {}".format(filename))
             tmp = RawConfigParser()
+            tmp.optionxform = str
+
+            if content:
+                tmp.read_string(content)
+            else:
                 tmp.read(u"{}".format(filename))
 
             if tmp.has_section("module-parameters"):

tests/core/test_config.py

@@ -113,6 +113,12 @@ def test_missing_parameter():
     assert cfg.get("test.key") == None
     assert cfg.get("test.key", "no-value-set") == "no-value-set"
 
+def test_file_case_sensitivity():
+    cfg = core.config.Config([])
+    cfg.load_config("", content="[module-parameters]\ntest.key = VaLuE\ntest.KeY2 = value")
+
+    assert cfg.get("test.key") == "VaLuE"
+    assert cfg.get("test.KeY2") == "value"
 
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