diff options
Diffstat (limited to 'lib/dialyzer/test/opaque_tests_SUITE_data/src/union')
| -rw-r--r-- | lib/dialyzer/test/opaque_tests_SUITE_data/src/union/union_adt.erl | 19 | ||||
| -rw-r--r-- | lib/dialyzer/test/opaque_tests_SUITE_data/src/union/union_use.erl | 16 |
2 files changed, 35 insertions, 0 deletions
diff --git a/lib/dialyzer/test/opaque_tests_SUITE_data/src/union/union_adt.erl b/lib/dialyzer/test/opaque_tests_SUITE_data/src/union/union_adt.erl new file mode 100644 index 0000000000..5ca3202bba --- /dev/null +++ b/lib/dialyzer/test/opaque_tests_SUITE_data/src/union/union_adt.erl @@ -0,0 +1,19 @@ +-module(union_adt). +-export([new/1, new_a/1, new_rec/1]). + +-record(rec, {x = 42 :: integer()}). + +-opaque u() :: 'aaa' | 'bbb' | #rec{}. + +new(a) -> aaa; +new(b) -> bbb; +new(X) when is_integer(X) -> + #rec{x = X}. + +%% the following two functions (and their uses in union_use.erl) test +%% that the return type is the opaque one and not just a subtype of it + +new_a(a) -> aaa. + +new_rec(X) when is_integer(X) -> + #rec{x = X}. diff --git a/lib/dialyzer/test/opaque_tests_SUITE_data/src/union/union_use.erl b/lib/dialyzer/test/opaque_tests_SUITE_data/src/union/union_use.erl new file mode 100644 index 0000000000..6a103279cd --- /dev/null +++ b/lib/dialyzer/test/opaque_tests_SUITE_data/src/union/union_use.erl @@ -0,0 +1,16 @@ +-module(union_use). + +-export([test/1, wrong_a/0, wrong_rec/0]). + +test(X) -> + case union_adt:new(X) of + A when is_atom(A) -> atom; + T when is_tuple(T) -> tuple + end. + +wrong_a() -> + aaa = union_adt:new_a(a), + ok. + +wrong_rec() -> + is_tuple(union_adt:new_rec(42)). |