diff --git a/scripttease/library/commands/base.py b/scripttease/library/commands/base.py
index 54ccd17..5af1c4f 100644
--- a/scripttease/library/commands/base.py
+++ b/scripttease/library/commands/base.py
@@ -106,7 +106,7 @@ class Command(object):
             a.append("%s &&" % self.prefix)
 
         if self.sudo:
-            statement = "sudo -u %s %s" % (self.sudo.user, self._get_statement())
+            statement = "%s %s" % (self.sudo, self._get_statement())
         else:
             statement = self._get_statement()
 
@@ -147,6 +147,11 @@ class Command(object):
         """
         return name in self._attributes
 
+    @property
+    def is_itemized(self):
+        """Always returns ``False``."""
+        return False
+
     def set_attribute(self, name, value):
         """Set the value of a dynamic attribute.
 
@@ -218,7 +223,7 @@ class ItemizedCommand(object):
 
         return a
 
-    def get_statement(self, cd=False):
+    def get_statement(self, cd=False, suppress_comment=False):
         """Override to get multiple commands."""
         kwargs = self.kwargs.copy()
         comment = kwargs.pop("comment", "execute multiple commands")
@@ -228,7 +233,7 @@ class ItemizedCommand(object):
 
         commands = self.get_commands()
         for c in commands:
-            a.append(c.get_statement(cd=cd))
+            a.append(c.get_statement(cd=cd, suppress_comment=suppress_comment))
             a.append("")
 
         # for item in self.items:
@@ -253,6 +258,11 @@ class ItemizedCommand(object):
         """
         return name in self.kwargs
 
+    @property
+    def is_itemized(self):
+        """Always returns ``True``."""
+        return True
+
     def set_attribute(self, name, value):
         """Set the value of a dynamic attribute.
 
@@ -286,3 +296,9 @@ class Sudo(object):
 
     def __bool__(self):
         return self.enabled
+
+    def __str__(self):
+        if self.enabled:
+            return "sudo -u %s" % self.user
+
+        return ""
diff --git a/tests/test_parsers_utils.py b/tests/test_parsers_utils.py
index d099a65..8317e15 100644
--- a/tests/test_parsers_utils.py
+++ b/tests/test_parsers_utils.py
@@ -1,6 +1,7 @@
+import os
 import pytest
 from scripttease.library.commands import Command, ItemizedCommand
-from scripttease.parsers import filter_commands, load_commands
+from scripttease.parsers.utils import *
 
 
 def test_filter_commands():
@@ -40,3 +41,93 @@ def test_load_commands():
         }
     )
     assert len(commands) == 2
+
+
+def test_load_variables():
+    assert len(load_variables("nonexistent.ini")) == 0
+
+    assert len(load_variables(os.path.join("tests", "examples", "templates", "simple.txt"))) == 0
+
+    variables = load_variables(os.path.join("tests", "examples", "variables.ini"))
+    assert len(variables) == 5
+
+    variables = load_variables(os.path.join("tests", "examples", "variables.ini"), environment="testing")
+    assert len(variables) == 4
+
+
+class TestContext(object):
+
+    def test_add(self):
+        c = Context()
+        c.add("testing", True)
+        assert len(c.variables) == 1
+
+        c.add("also_testing", False)
+        assert len(c.variables) == 2
+
+        assert isinstance(c.add("still_testing", True), Variable)
+
+        with pytest.raises(RuntimeError):
+            c.add("testing", True)
+
+    def test_get(self):
+        c = Context(testing=True)
+        assert c.get("testing") is True
+        assert c.get("nonexistent") is None
+        assert c.get("nonexistent", default=True) is True
+
+    def test_getattr(self):
+        c = Context(testing=True)
+        assert c.testing is True
+        assert c.nonexistent is None
+
+    def test_has(self):
+        c = Context(testing=True)
+        assert c.has("testing") is True
+        assert c.has("nonexistent") is False
+
+    def test_init(self):
+        c = Context(testing=True, also_testing=123)
+        assert len(c.variables) == 2
+
+    def test_join(self):
+        c = Context(testing=True)
+
+        variables = [
+            Variable("testing", True),
+            Variable("also_testing", True),
+        ]
+        c.join(variables)
+        assert len(c.variables) == 2
+
+    def test_mapping(self):
+        c = Context(testing=True, also_testing=False, still_testing=True)
+        assert type(c.mapping()) is dict
+        assert len(c.mapping()) == 3
+
+    def test_merge(self):
+        c1 = Context(testing=True, also_testing=False)
+        c2 = Context(still_testing=True)
+        c1.merge(c2)
+        assert len(c1.variables) == 3
+
+    def test_repr(self):
+        c = Context(testing=True, also_testing=False, still_testing=True)
+        assert repr(c) == "<Context (3)>"
+
+
+class TestVariable(object):
+
+    def test_eq(self):
+        var = Variable("testing", True)
+        assert var == True
+
+    def test_getattr(self):
+        var = Variable("testing", True, one="a", two="b")
+        assert var.one == "a"
+        assert var.two == "b"
+        assert var.three is None
+
+    def test_repr(self):
+        var = Variable("testing", True)
+        assert repr(var) == "<Variable testing>"