Add a plugin system

This code was originally written separately, which is why there's no
history of it in the cliapp version control repository. The code
is derived from code I wrote for obnam.

4 files changed, 44 insertions, 0 deletions

diff --git a/test-plugins/aaa_hello_plugin.py b/test-plugins/aaa_hello_plugin.py
new file mode 100644
index 0000000..b8f3253
--- /dev/null
+++ b/test-plugins/aaa_hello_plugin.py
@@ -0,0 +1,8 @@
+import cliapp
+
+class Hello(cliapp.Plugin):
+
+    def __init__(self, foo, bar=None):
+        self.foo = foo
+        self.bar = bar
+
diff --git a/test-plugins/hello_plugin.py b/test-plugins/hello_plugin.py
new file mode 100644
index 0000000..1a4f1ea
--- /dev/null
+++ b/test-plugins/hello_plugin.py
@@ -0,0 +1,15 @@
+import cliapp
+
+class Hello(cliapp.Plugin):
+
+    def __init__(self, foo, bar=None):
+        self.foo = foo
+        self.bar = bar
+
+    @property
+    def version(self):
+        return '0.0.1'
+        
+    def setup(self):
+        self.setup_called = True
+
diff --git a/test-plugins/oldhello_plugin.py b/test-plugins/oldhello_plugin.py
new file mode 100644
index 0000000..e401ff7
--- /dev/null
+++ b/test-plugins/oldhello_plugin.py
@@ -0,0 +1,9 @@
+import cliapp
+
+class Hello(cliapp.Plugin):
+
+    def __init__(self, foo, bar=None):
+        self.foo = foo
+        self.bar = bar
+
+
diff --git a/test-plugins/wrongversion_plugin.py b/test-plugins/wrongversion_plugin.py
new file mode 100644
index 0000000..9f54908
--- /dev/null
+++ b/test-plugins/wrongversion_plugin.py
@@ -0,0 +1,12 @@
+# This is a test plugin that requires a newer application version than
+# what the test harness specifies.
+
+import cliapp
+
+class WrongVersion(cliapp.Plugin):
+
+    required_application_version = '9999.9.9'
+
+    def __init__(self, *args, **kwargs):
+        pass
+