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142 rivejä
5.3 KiB
142 rivejä
5.3 KiB
%%% Mock a git_subdir resource and create an app magically for each
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%%% URL and subdirectory submitted.
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-module(mock_git_subdir_resource).
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-export([mock/0, mock/1, mock/2, unmock/0]).
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-define(MOD, rebar_git_subdir_resource).
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%%%%%%%%%%%%%%%%%
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%%% Interface %%%
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%%%%%%%%%%%%%%%%%
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%% @doc same as `mock([])'.
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mock() -> mock([]).
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%% @doc Mocks a fake version of the git resource fetcher that creates
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%% empty applications magically, rather than trying to download them.
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%% Specific config options are explained in each of the private functions.
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-spec mock(Opts) -> ok when
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Opts :: [Option],
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Option :: {update, [App]}
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| {default_vsn, Vsn}
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| {override_vsn, [{App, Vsn}]}
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| {deps, [{App, [Dep]}]},
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App :: string(),
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Dep :: {App, {git_subdir, string(), term(), string()}}
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| {pkg, App, term()},
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Vsn :: string().
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mock(Opts) ->
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mock(Opts, create_app).
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mock(Opts, CreateType) ->
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meck:new(?MOD, [no_link, passthrough]),
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mock_lock(Opts),
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mock_update(Opts),
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mock_vsn(Opts),
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mock_download(Opts, CreateType),
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ok.
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unmock() ->
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meck:unload(?MOD).
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%%%%%%%%%%%%%%%
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%%% Private %%%
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%%%%%%%%%%%%%%%
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%% @doc creates values for a lock file. The refs are fake, but
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%% tags and existing refs declared for a dependency are preserved.
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mock_lock(_) ->
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meck:expect(
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?MOD, lock,
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fun(AppInfo, _) ->
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case rebar_app_info:source(AppInfo) of
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{git_subdir, Url, {tag, Ref}, Dir} -> {git_subdir, Url, {ref, Ref}, Dir};
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{git_subdir, Url, {ref, Ref}, Dir} -> {git_subdir, Url, {ref, Ref}, Dir};
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{git_subdir, Url, Dir} -> {git_subdir, Url, {ref, "0.0.0"}, Dir};
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{git_subdir, Url, _, Dir} -> {git_subdir, Url, {ref, "0.0.0"}, Dir}
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end
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end).
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%% @doc The config passed to the `mock/2' function can specify which apps
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%% should be updated on a per-name basis: `{update, ["App1", "App3"]}'.
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mock_update(Opts) ->
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ToUpdate = proplists:get_value(upgrade, Opts, []),
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% ct:pal("TOUp: ~p", [ToUpdate]),
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meck:expect(
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?MOD, needs_update,
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fun(AppInfo, _) ->
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{git_subdir, Url, _Ref} = rebar_app_info:source(AppInfo),
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App = app(Url),
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% ct:pal("Needed update? ~p (~p) -> ~p", [App, {Url,_Ref}, lists:member(App, ToUpdate)]),
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lists:member(App, ToUpdate)
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end).
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%% @doc Tries to fetch a version from the `*.app.src' file or otherwise
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%% just returns random stuff, avoiding to check for the presence of git.
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%% This probably breaks the assumption that stable references are returned.
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%%
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%% This function can't respect the `override_vsn' option because if the
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%% .app.src file isn't there, we can't find the app name either.
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mock_vsn(Opts) ->
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Default = proplists:get_value(default_vsn, Opts, "0.0.0"),
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meck:expect(
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?MOD, make_vsn,
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fun(AppInfo, _) ->
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Dir = rebar_app_info:dir(AppInfo),
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case filelib:wildcard("*.app.src", filename:join([Dir,"src"])) of
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[AppSrc] ->
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{ok, App} = file:consult(AppSrc),
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Vsn = proplists:get_value(vsn, App),
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{plain, Vsn};
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_ ->
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{plain, Default}
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end
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end).
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%% @doc For each app to download, create a dummy app on disk instead.
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%% The configuration for this one (passed in from `mock/1') includes:
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%%
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%% - Specify a version, branch, ref, or tag via the `{git_subdir, URL, {_, Vsn}'
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%% format to specify a path.
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%% - If there is no version submitted (`{git_subdir, URL}'), the function instead
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%% reads from the `override_vsn' proplist (`{override_vsn, {"App1","1.2.3"}'),
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%% and otherwise uses the value associated with `default_vsn'.
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%% - Dependencies for each application must be passed of the form:
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%% `{deps, [{"app1", [{app2, ".*", {git_subdir, ...}}]}]}' -- basically
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%% the `deps' option takes a key/value list of terms to output directly
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%% into a `rebar.config' file to describe dependencies.
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mock_download(Opts, CreateType) ->
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Deps = proplists:get_value(deps, Opts, []),
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Config = proplists:get_value(config, Opts, []),
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Default = proplists:get_value(default_vsn, Opts, "0.0.0"),
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Overrides = proplists:get_value(override_vsn, Opts, []),
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meck:expect(
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?MOD, download,
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fun (Dir, AppInfo, _, _) ->
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Git = rebar_app_info:source(AppInfo),
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filelib:ensure_dir(Dir),
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{git_subdir, Url, {_, Vsn}, SubDir} = normalize_git(Git, Overrides, Default),
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FullSubDir = filename:join(Dir, SubDir),
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filelib:ensure_dir(FullSubDir),
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App = app(Url),
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AppDeps = proplists:get_value({App,Vsn}, Deps, []),
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rebar_test_utils:CreateType(
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FullSubDir, App, Vsn,
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[kernel, stdlib] ++ [element(1,D) || D <- AppDeps]
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),
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rebar_test_utils:create_config(FullSubDir, [{deps, AppDeps}]++Config),
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ok
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end).
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%%%%%%%%%%%%%%%
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%%% Helpers %%%
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%%%%%%%%%%%%%%%
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app(Path) ->
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filename:basename(Path, ".git").
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normalize_git({git_subdir, Url, SubDir}, Overrides, Default) ->
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Vsn = proplists:get_value(app(Url), Overrides, Default),
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{git, Url, {tag, Vsn}, SubDir};
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normalize_git({git_subdir, Url, Branch, SubDir}, _, _) when is_list(Branch) ->
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{git, Url, {branch, Branch}, SubDir};
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normalize_git(Git, _, _) ->
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Git.
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