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Diffstat (limited to 'lib/hipe/test/basic_SUITE_data/basic_pattern_match.erl')
-rw-r--r-- | lib/hipe/test/basic_SUITE_data/basic_pattern_match.erl | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/lib/hipe/test/basic_SUITE_data/basic_pattern_match.erl b/lib/hipe/test/basic_SUITE_data/basic_pattern_match.erl new file mode 100644 index 0000000000..93240354a7 --- /dev/null +++ b/lib/hipe/test/basic_SUITE_data/basic_pattern_match.erl @@ -0,0 +1,46 @@ +%%% -*- erlang-indent-level: 2 -*- +%%%------------------------------------------------------------------- +%%% Author: Kostis Sagonas +%%% +%%% Contains code examples that test pattern matching against terms of +%%% various types. +%%%------------------------------------------------------------------- +-module(basic_pattern_match). + +-export([test/0]). + +test() -> + ok = test_hello_world(), + ok = test_list_plus_plus_match(), + ok. + +%%-------------------------------------------------------------------- +%% Trivial test to test pattern matching compilation with atoms, the +%% correct handling of all sorts of alphanumeric types in Erlang, and +%% conversions between them. + +test_hello_world() -> + String = gimme(string), + String = atom_to_list(gimme(atom)), + String = binary_to_list(gimme(binary)), + true = (list_to_atom(String) =:= gimme(atom)), + true = (list_to_binary(String) =:= gimme(binary)), + ok. + +gimme(string) -> + "hello world"; +gimme(atom) -> + 'hello world'; +gimme(binary) -> + <<"hello world">>. + +%%-------------------------------------------------------------------- +%% Makes sure that pattern matching expressions involving ++ work OK. +%% The third expression caused a problem in the Erlang shell of R11B-5. +%% It worked OK in both interpreted and compiled code. + +test_list_plus_plus_match() -> + ok = (fun("X" ++ _) -> ok end)("X"), + ok = (fun([$X | _]) -> ok end)("X"), + ok = (fun([$X] ++ _) -> ok end)("X"), + ok. |