version dictionary is now case-insensitive.

tests/packages/test_versions.py

@@ -0,0 +1,35 @@
+import pytest
+from uranium.packages.versions import Versions
+
+
+@pytest.fixture
+def versions():
+    return Versions()
+
+
+def test_versions_coerce_lowercase(versions):
+    """
+    coerce package names to lowercase
+    """
+    versions["SQLAlchemy"] = "==1.0.11"
+    assert versions["sqlalchemy"] == "==1.0.11"
+
+
+def test_versions_coerce_lowercase_update(versions):
+    """
+    coerce package names to lowercase for update.
+    """
+    versions.update({
+        "SQLAlchemy": "==1.0.11"
+    })
+    assert versions["sqlalchemy"] == "==1.0.11"
+
+
+def test_versions_coerce_lowercase_get(versions):
+    """
+    getting a package name should also be lowercase.
+    """
+    versions.update({
+        "SQLAlchemy": "==1.0.11"
+    })
+    assert versions["SQLAlchemy"] == "==1.0.11"

uranium/packages/__init__.py

@@ -1,6 +1,7 @@
 from ..lib.asserts import get_assert_function
 from ..exceptions import PackageException
 from .install_command import install
+from .versions import Versions
 
 p_assert = get_assert_function(PackageException)
 
@@ -16,7 +17,7 @@ class Packages(object):
     """
 
     def __init__(self):
-        self._versions = {}
+        self._versions = Versions()
         self._index_urls = list(DEFAULT_INDEX_URLS)
 
     @property

uranium/packages/versions.py

@@ -0,0 +1,25 @@
+from collections import MutableMapping
+
+
+class Versions(MutableMapping):
+    """ a dictionary containing version specs. """
+
+    def __init__(self):
+        self._values = {}
+
+    def __setitem__(self, key, value):
+        key = str(key).lower()
+        self._values[key] = value
+
+    def __getitem__(self, key):
+        key = str(key).lower()
+        return self._values[key]
+
+    def __delitem__(self, key):
+        del self._values[key]
+
+    def __iter__(self):
+        return iter(self._values)
+
+    def __len__(self):
+        return len(self._values)