diff options
author | Noah Slater <nslater@apache.org> | 2009-05-30 15:35:29 +0000 |
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committer | Noah Slater <nslater@apache.org> | 2009-05-30 15:35:29 +0000 |
commit | 347e33c608623197bb35c6c63f1e1ce53d5615a2 (patch) | |
tree | 6765239a8e7d93bc811c19260b841049e8854200 /t/011-file-headers.t | |
parent | 519ba57b75addada246792ba2b93aab13039ba9e (diff) |
renamed directory
git-svn-id: https://svn.apache.org/repos/asf/couchdb/trunk@780288 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 't/011-file-headers.t')
-rw-r--r-- | t/011-file-headers.t | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/t/011-file-headers.t b/t/011-file-headers.t deleted file mode 100644 index 2fc18ed1..00000000 --- a/t/011-file-headers.t +++ /dev/null @@ -1,133 +0,0 @@ -#!/usr/bin/env escript -%% -*- erlang -*- -%%! -pa ./src/couchdb -sasl errlog_type error -boot start_sasl -noshell - --define(FILE_NAME, "./t/temp.011"). --define(SIZE_BLOCK, 4096). % Need to keep this in sync with couch_file.erl - -main(_) -> - {S1, S2, S3} = now(), - random:seed(S1, S2, S3), - - etap:plan(17), - case (catch test()) of - ok -> - etap:end_tests(); - Other -> - etap:diag(io_lib:format("Test died abnormally: ~p", [Other])), - etap:bail() - end, - ok. - -test() -> - {ok, Fd} = couch_file:open(?FILE_NAME, [create,overwrite]), - - etap:is({ok, 0}, couch_file:bytes(Fd), - "File should be initialized to contain zero bytes."), - - etap:is(ok, couch_file:write_header(Fd, {<<"some_data">>, 32}), - "Writing a header succeeds."), - - {ok, Size1} = couch_file:bytes(Fd), - etap:is_greater(Size1, 0, - "Writing a header allocates space in the file."), - - etap:is({ok, {<<"some_data">>, 32}}, couch_file:read_header(Fd), - "Reading the header returns what we wrote."), - - etap:is(ok, couch_file:write_header(Fd, [foo, <<"more">>]), - "Writing a second header succeeds."), - - {ok, Size2} = couch_file:bytes(Fd), - etap:is_greater(Size2, Size1, - "Writing a second header allocates more space."), - - etap:is({ok, [foo, <<"more">>]}, couch_file:read_header(Fd), - "Reading the second header does not return the first header."), - - % Delete the second header. - ok = couch_file:truncate(Fd, Size1), - - etap:is({ok, {<<"some_data">>, 32}}, couch_file:read_header(Fd), - "Reading the header after a truncation returns a previous header."), - - couch_file:write_header(Fd, [foo, <<"more">>]), - etap:is({ok, Size2}, couch_file:bytes(Fd), - "Rewriting the same second header returns the same second size."), - - ok = couch_file:close(Fd), - - % Now for the fun stuff. Try corrupting the second header and see - % if we recover properly. - - % Destroy the 0x1 byte that marks a header - check_header_recovery(fun(CouchFd, RawFd, Expect, HeaderPos) -> - etap:isnt(Expect, couch_file:read_header(CouchFd), - "Should return a different header before corruption."), - file:pwrite(RawFd, HeaderPos, <<0>>), - etap:is(Expect, couch_file:read_header(CouchFd), - "Corrupting the byte marker should read the previous header.") - end), - - % Corrupt the size. - check_header_recovery(fun(CouchFd, RawFd, Expect, HeaderPos) -> - etap:isnt(Expect, couch_file:read_header(CouchFd), - "Should return a different header before corruption."), - % +1 for 0x1 byte marker - file:pwrite(RawFd, HeaderPos+1, <<10/integer>>), - etap:is(Expect, couch_file:read_header(CouchFd), - "Corrupting the size should read the previous header.") - end), - - % Corrupt the MD5 signature - check_header_recovery(fun(CouchFd, RawFd, Expect, HeaderPos) -> - etap:isnt(Expect, couch_file:read_header(CouchFd), - "Should return a different header before corruption."), - % +5 = +1 for 0x1 byte and +4 for term size. - file:pwrite(RawFd, HeaderPos+5, <<"F01034F88D320B22">>), - etap:is(Expect, couch_file:read_header(CouchFd), - "Corrupting the MD5 signature should read the previous header.") - end), - - % Corrupt the data - check_header_recovery(fun(CouchFd, RawFd, Expect, HeaderPos) -> - etap:isnt(Expect, couch_file:read_header(CouchFd), - "Should return a different header before corruption."), - % +21 = +1 for 0x1 byte, +4 for term size and +16 for MD5 sig - file:pwrite(RawFd, HeaderPos+21, <<"some data goes here!">>), - etap:is(Expect, couch_file:read_header(CouchFd), - "Corrupting the header data should read the previous header.") - end), - - ok. - -check_header_recovery(CheckFun) -> - {ok, Fd} = couch_file:open(?FILE_NAME, [create,overwrite]), - {ok, RawFd} = file:open(?FILE_NAME, [read, write, raw, binary]), - - {ok, _} = write_random_data(Fd), - ExpectHeader = {some_atom, <<"a binary">>, 756}, - ok = couch_file:write_header(Fd, ExpectHeader), - - {ok, HeaderPos} = write_random_data(Fd), - ok = couch_file:write_header(Fd, {2342, <<"corruption! greed!">>}), - - CheckFun(Fd, RawFd, {ok, ExpectHeader}, HeaderPos), - - ok = file:close(RawFd), - ok = couch_file:close(Fd), - ok. - -write_random_data(Fd) -> - write_random_data(Fd, 100 + random:uniform(1000)). - -write_random_data(Fd, 0) -> - {ok, Bytes} = couch_file:bytes(Fd), - {ok, (1 + Bytes div ?SIZE_BLOCK) * ?SIZE_BLOCK}; -write_random_data(Fd, N) -> - Choices = [foo, bar, <<"bizzingle">>, "bank", ["rough", stuff]], - Term = lists:nth(random:uniform(4) + 1, Choices), - {ok, _} = couch_file:append_term(Fd, Term), - write_random_data(Fd, N-1). - -
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