1 files changed, 93 insertions, 0 deletions
diff --git a/tests/test_context.py b/tests/test_context.py
new file mode 100644
index 0000000..92ef447
--- /dev/null
+++ b/tests/test_context.py
@@ -0,0 +1,93 @@
+# -*- coding: utf-8 -*-
+import click
+
+
+def test_ensure_context_objects(runner):
+    class Foo(object):
+        def __init__(self):
+            self.title = 'default'
+
+    pass_foo = click.make_pass_decorator(Foo, ensure=True)
+
+    @click.group()
+    @pass_foo
+    def cli(foo):
+        pass
+
+    @cli.command()
+    @pass_foo
+    def test(foo):
+        click.echo(foo.title)
+
+    result = runner.invoke(cli, ['test'])
+    assert not result.exception
+    assert result.output == 'default\n'
+
+
+def test_get_context_objects(runner):
+    class Foo(object):
+        def __init__(self):
+            self.title = 'default'
+
+    pass_foo = click.make_pass_decorator(Foo, ensure=True)
+
+    @click.group()
+    @click.pass_context
+    def cli(ctx):
+        ctx.obj = Foo()
+        ctx.obj.title = 'test'
+
+    @cli.command()
+    @pass_foo
+    def test(foo):
+        click.echo(foo.title)
+
+    result = runner.invoke(cli, ['test'])
+    assert not result.exception
+    assert result.output == 'test\n'
+
+
+def test_get_context_objects_no_ensuring(runner):
+    class Foo(object):
+        def __init__(self):
+            self.title = 'default'
+
+    pass_foo = click.make_pass_decorator(Foo)
+
+    @click.group()
+    @click.pass_context
+    def cli(ctx):
+        ctx.obj = Foo()
+        ctx.obj.title = 'test'
+
+    @cli.command()
+    @pass_foo
+    def test(foo):
+        click.echo(foo.title)
+
+    result = runner.invoke(cli, ['test'])
+    assert not result.exception
+    assert result.output == 'test\n'
+
+
+def test_get_context_objects_missing(runner):
+    class Foo(object):
+        pass
+
+    pass_foo = click.make_pass_decorator(Foo)
+
+    @click.group()
+    @click.pass_context
+    def cli(ctx):
+        pass
+
+    @cli.command()
+    @pass_foo
+    def test(foo):
+        click.echo(foo.title)
+
+    result = runner.invoke(cli, ['test'])
+    assert result.exception is not None
+    assert isinstance(result.exception, RuntimeError)
+    assert "Managed to invoke callback without a context object " \
+        "of type 'Foo' existing" in str(result.exception)