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Support running meck with modules built with '+deterministic' compile… #185

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merged 1 commit into from
Nov 27, 2017

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nablaa
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@nablaa nablaa commented Nov 21, 2017

… option

When modules are built with '+deterministic' option, the BEAM files
don't have compile options available in the module_info/1:

$ cat foo.erl
-module(foo).
$ erlc foo.erl
$ erl -noshell -eval 'io:format("~p~n", [foo:module_info(compile)])' -run init stop
[{options,[]},
{version,"7.1.1"},
{source,"/home/foobar/foo.erl"}]
$ rm foo.beam
$ erlc +deterministic foo.erl
$ erl -noshell -eval 'io:format("~p~n", [foo:module_info(compile)])' -run init stop
[{version,"7.1.1"}]

Running meck against these modules fail:

::{function_clause,[{lists,'-filter/2-lc$^0/1-0-',
                           [undefined],
                           [{file,"lists.erl"},{line,1286}]},
                    {meck_proc,backup_original,3,
                               [{file,"/home/foobar/meck/_build/default/lib/meck/src/meck_proc.erl"},
                                {line,361}]},
                    {meck_proc,init,1,
                               [{file,"/home/foobar/meck/_build/default/lib/meck/src/meck_proc.erl"},
                                {line,206}]},
                    {gen_server,init_it,2,
                                [{file,"gen_server.erl"},{line,365}]},
                    {gen_server,init_it,6,[{file,[...]},{line,...}]},
                    {proc_lib,init_p_do_apply,3,[{file,...},{...}]}]}

This commit fixes the problem.

Fixes #184

… option

When modules are built with '+deterministic' option, the BEAM files
don't have compile options available in the module_info/1:

    $ cat foo.erl
    -module(foo).
    $ erlc foo.erl
    $ erl -noshell -eval 'io:format("~p~n", [foo:module_info(compile)])' -run init stop
    [{options,[]},
    {version,"7.1.1"},
    {source,"/home/foobar/foo.erl"}]
    $ rm foo.beam
    $ erlc +deterministic foo.erl
    $ erl -noshell -eval 'io:format("~p~n", [foo:module_info(compile)])' -run init stop
    [{version,"7.1.1"}]

Running meck against these modules fail:

    ::{function_clause,[{lists,'-filter/2-lc$^0/1-0-',
                               [undefined],
                               [{file,"lists.erl"},{line,1286}]},
                        {meck_proc,backup_original,3,
                                   [{file,"/home/foobar/meck/_build/default/lib/meck/src/meck_proc.erl"},
                                    {line,361}]},
                        {meck_proc,init,1,
                                   [{file,"/home/foobar/meck/_build/default/lib/meck/src/meck_proc.erl"},
                                    {line,206}]},
                        {gen_server,init_it,2,
                                    [{file,"gen_server.erl"},{line,365}]},
                        {gen_server,init_it,6,[{file,[...]},{line,...}]},
                        {proc_lib,init_p_do_apply,3,[{file,...},{...}]}]}

This commit fixes the problem.

Fixes eproxus#184
@eproxus
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eproxus commented Nov 27, 2017

Thank you!

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Meck doesn't support modules built with '+deterministic' compile option
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