Christopher M. Punches
0291e61fd8
Installation records what a module reports about itself. dpm_install_module opens a module once, writes its version and description to a .meta file in /var/lib/dpm/metadata/, and records the alternate names it declared in modules.aliases beside it. dpm_uninstall_module removes both, leaving the module file in place. dpm_list_modules reads those records and opens no module. A module with no record lists with a version of <uninstalled> and still loads when a caller names it. An unreadable or absent metadata directory costs the listing its detail and costs nothing else. Aliases give a module alternate names, declared through the new dpm_module_aliases contract symbol or added with dpm_add_module_alias. A name is recorded once: one already serving as an alias, or belonging to an installed module, is refused rather than repointed. dpm_require matches a name against the installed modules, then the alias table, then the module path. The metadata directory is a fifth override field and the -M flag, and [modules] metadata in core.conf. The test suite is four binaries covering context, modules, records, and aliases, each a ctest case of its own, alongside the CLI cases.
91 lines
3.4 KiB
C++
91 lines
3.4 KiB
C++
/**
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* @file test_modules.cpp
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* @brief Load-time validation, module acquisition, and dispatch
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*
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* @copyright Copyright (c) 2026 SILO GROUP LLC
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* @author Chris Punches <chris.punches@silogroup.org>
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*
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* Part of the Dark Horse Linux Package Manager (DPM)
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "harness.hpp"
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int main(void) {
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dpm_open_overrides overrides = {TEST_FIXTURE_CONF, TEST_FIXTURE_MODULES,
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nullptr, -1, TEST_FIXTURE_METADATA};
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dpm_ctx* ctx = dpm_open(&overrides);
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CHECK(ctx != nullptr);
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if (!ctx) {
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std::fprintf(stderr, "cannot continue without a context\n");
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return 1;
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}
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/* ---- every broken fixture is refused, and the reason says why ---- */
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{
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CHECK(dpm_require(ctx, "missing_symbols") == nullptr);
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CHECK(error_contains(ctx, "missing required contract symbols"));
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CHECK(error_contains(ctx, "dpm_module_execute"));
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CHECK(error_contains(ctx, "dpm_module_aliases"));
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CHECK(dpm_require(ctx, "bad_version") == nullptr);
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CHECK(error_contains(ctx, "malformed version"));
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CHECK(dpm_require(ctx, "nonexistent") == nullptr);
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CHECK(error_contains(ctx, "not found"));
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}
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/* ---- a bad argument is refused without touching the module path ---- */
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{
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CHECK(dpm_require(nullptr, "good") == nullptr);
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CHECK(dpm_require(ctx, nullptr) == nullptr);
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CHECK(dpm_require(ctx, "") == nullptr);
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}
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/* ---- the known-good fixture loads and reports what it declares ---- */
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{
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dpm_module* good = dpm_require(ctx, "good");
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CHECK(good != nullptr);
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if (!good) {
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dpm_close(ctx);
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return harness_report("modules");
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}
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/* a module is opened at most once per context */
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CHECK(dpm_require(ctx, "good") == good);
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dpm_module_info seen;
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CHECK(dpm_get_module_info(ctx, good, &seen) == 0);
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CHECK(std::strcmp(seen.name, "good") == 0);
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CHECK(std::strcmp(seen.version, "1.2.3") == 0);
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CHECK(seen.description != nullptr && *seen.description);
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CHECK(dpm_get_module_info(ctx, nullptr, &seen) != 0);
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CHECK(dpm_get_module_info(ctx, good, nullptr) != 0);
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CHECK(dpm_get_module_info(nullptr, good, &seen) != 0);
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/* dispatch returns the module's own value, so a round trip is
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observable with no compile-time knowledge of the module */
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CHECK(dpm_execute(ctx, good, "ping", 0, nullptr) == 42);
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CHECK(dpm_execute(ctx, good, "anything_else", 0, nullptr) == 0);
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CHECK(dpm_execute(ctx, good, nullptr, 0, nullptr) == 0);
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CHECK(dpm_execute(nullptr, good, "ping", 0, nullptr) == 1);
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CHECK(dpm_execute(ctx, nullptr, "ping", 0, nullptr) == 1);
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}
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dpm_close(ctx);
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return harness_report("modules");
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}
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