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authorStavros Aronis <[email protected]>2011-04-02 18:57:42 +0300
committerHenrik Nord <[email protected]>2011-05-04 15:06:15 +0200
commitca4633fd683527097451ca1398c90c87bb5c14fc (patch)
tree3d8e18c9becd4feb7d3ceb1eed24bdce2ef69dd6 /lib/dialyzer/test/small_SUITE_data/src/port_info_test.erl
parentbc619f0cbf9555df6dfc44a499f0cd9cee8bd1be (diff)
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Rename suite data directories
Diffstat (limited to 'lib/dialyzer/test/small_SUITE_data/src/port_info_test.erl')
-rw-r--r--lib/dialyzer/test/small_SUITE_data/src/port_info_test.erl33
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diff --git a/lib/dialyzer/test/small_SUITE_data/src/port_info_test.erl b/lib/dialyzer/test/small_SUITE_data/src/port_info_test.erl
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+++ b/lib/dialyzer/test/small_SUITE_data/src/port_info_test.erl
@@ -0,0 +1,33 @@
+%%
+%% Tests hardcoded dependent type info
+%% and the quality of the warnings that Dialyzer spits out
+%%
+-module(port_info_test).
+-export([t1/1, t2/1, t3/1, t4/1, t5/2, buggy/1]).
+
+%% The following errors are correctly caught, but the messages are a bit weird
+t1(X) when is_port(X) ->
+ {connected, 42} = erlang:port_info(X, connected);
+t1(_) -> ok.
+
+t2(X) when is_port(X) ->
+ {registered_name, "42"} = erlang:port_info(X, registered_name);
+t2(_) -> ok.
+
+%% Here only one od the two errors is reported...
+t3(X) when is_atom(X) ->
+ {output, 42} = erlang:port_info(X, connected);
+t3(_) -> ok.
+
+t4(X) when is_atom(X) ->
+ {Atom, _} = erlang:port_info(X, connected),
+ Atom = links;
+t4(_) -> ok.
+
+t5(X, Atom) when is_port(X) ->
+ {gazonk, _} = erlang:port_info(X, Atom);
+t5(_, _) -> ok.
+
+%% The type system is not strong enough to catch the following errors
+buggy(X) when is_atom(X) ->
+ {links, X} = erlang:port_info(foo, X).