summaryrefslogtreecommitdiff
path: root/src/etap/etap_exception.erl
diff options
context:
space:
mode:
Diffstat (limited to 'src/etap/etap_exception.erl')
-rw-r--r--src/etap/etap_exception.erl66
1 files changed, 66 insertions, 0 deletions
diff --git a/src/etap/etap_exception.erl b/src/etap/etap_exception.erl
new file mode 100644
index 00000000..ba660727
--- /dev/null
+++ b/src/etap/etap_exception.erl
@@ -0,0 +1,66 @@
+%% Copyright (c) 2008-2009 Nick Gerakines <nick@gerakines.net>
+%%
+%% Permission is hereby granted, free of charge, to any person
+%% obtaining a copy of this software and associated documentation
+%% files (the "Software"), to deal in the Software without
+%% restriction, including without limitation the rights to use,
+%% copy, modify, merge, publish, distribute, sublicense, and/or sell
+%% copies of the Software, and to permit persons to whom the
+%% Software is furnished to do so, subject to the following
+%% conditions:
+%%
+%% The above copyright notice and this permission notice shall be
+%% included in all copies or substantial portions of the Software.
+%%
+%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+%% EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+%% OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+%% NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+%% HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+%% WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+%% FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+%% OTHER DEALINGS IN THE SOFTWARE.
+%%
+%% @reference http://testanything.org/wiki/index.php/Main_Page
+%% @reference http://en.wikipedia.org/wiki/Test_Anything_Protocol
+%% @doc Adds exception based testing to the etap suite.
+-module(etap_exception).
+
+-export([dies_ok/2, lives_ok/2, throws_ok/3]).
+
+% ---
+% External / Public functions
+
+%% @doc Assert that an exception is raised when running a given function.
+dies_ok(F, Desc) ->
+ case (catch F()) of
+ {'EXIT', _} -> etap:ok(true, Desc);
+ _ -> etap:ok(false, Desc)
+ end.
+
+%% @doc Assert that an exception is not raised when running a given function.
+lives_ok(F, Desc) ->
+ etap:is(try_this(F), success, Desc).
+
+%% @doc Assert that the exception thrown by a function matches the given exception.
+throws_ok(F, Exception, Desc) ->
+ try F() of
+ _ -> etap:ok(nok, Desc)
+ catch
+ _:E ->
+ etap:is(E, Exception, Desc)
+ end.
+
+% ---
+% Internal / Private functions
+
+%% @private
+%% @doc Run a function and catch any exceptions.
+try_this(F) when is_function(F, 0) ->
+ try F() of
+ _ -> success
+ catch
+ throw:E -> {throw, E};
+ error:E -> {error, E};
+ exit:E -> {exit, E}
+ end.