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authorJohn Högberg <[email protected]>2018-02-21 12:57:25 +0100
committerJohn Högberg <[email protected]>2018-02-22 10:23:14 +0100
commit8f3536583a6338e3a61dbf008d674f54a77e401c (patch)
treebb8f1a75ff06da9f3fa0515021d6632908e69fae /lib/stdlib/test
parent1540a0758b8d60af7b3832158015bd8cf64016af (diff)
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Add ets:whereis/1 for resolving table names -> tid()
Diffstat (limited to 'lib/stdlib/test')
-rw-r--r--lib/stdlib/test/ets_SUITE.erl35
1 files changed, 34 insertions, 1 deletions
diff --git a/lib/stdlib/test/ets_SUITE.erl b/lib/stdlib/test/ets_SUITE.erl
index 0cfb1b5516..8b651f4b43 100644
--- a/lib/stdlib/test/ets_SUITE.erl
+++ b/lib/stdlib/test/ets_SUITE.erl
@@ -78,6 +78,7 @@
-export([ets_all/1]).
-export([massive_ets_all/1]).
-export([take/1]).
+-export([whereis_table/1]).
-export([init_per_testcase/2, end_per_testcase/2]).
%% Convenience for manual testing
@@ -137,7 +138,8 @@ all() ->
otp_9423,
ets_all,
massive_ets_all,
- take].
+ take,
+ whereis_table].
groups() ->
[{new, [],
@@ -4099,6 +4101,7 @@ info_do(Opts) ->
{value, {keypos, 2}} = lists:keysearch(keypos, 1, Res),
{value, {protection, protected}} =
lists:keysearch(protection, 1, Res),
+ {value, {id, Tab}} = lists:keysearch(id, 1, Res),
true = ets:delete(Tab),
undefined = ets:info(non_existing_table_xxyy),
undefined = ets:info(non_existing_table_xxyy,type),
@@ -5892,6 +5895,36 @@ take(Config) when is_list(Config) ->
ets:delete(T3),
ok.
+whereis_table(Config) when is_list(Config) ->
+ %% Do we return 'undefined' when the named table doesn't exist?
+ undefined = ets:whereis(whereis_test),
+
+ %% Does the tid() refer to the same table as the name?
+ whereis_test = ets:new(whereis_test, [named_table]),
+ Tid = ets:whereis(whereis_test),
+
+ ets:insert(whereis_test, [{hello}, {there}]),
+
+ [[{hello}],[{there}]] = ets:match(whereis_test, '$1'),
+ [[{hello}],[{there}]] = ets:match(Tid, '$1'),
+
+ true = ets:delete_all_objects(Tid),
+
+ [] = ets:match(whereis_test, '$1'),
+ [] = ets:match(Tid, '$1'),
+
+ %% Does the name disappear when deleted through the tid()?
+ true = ets:delete(Tid),
+ undefined = ets:info(whereis_test),
+ {'EXIT',{badarg, _}} = (catch ets:match(whereis_test, '$1')),
+
+ %% Is the old tid() broken when the table is re-created with the same
+ %% name?
+ whereis_test = ets:new(whereis_test, [named_table]),
+ [] = ets:match(whereis_test, '$1'),
+ {'EXIT',{badarg, _}} = (catch ets:match(Tid, '$1')),
+
+ ok.
%%
%% Utility functions: