Initial commit: DPM core library, CLI, bundled info module, and tests
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tests/test_core.cpp
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196
tests/test_core.cpp
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/**
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* @file test_core.cpp
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* @brief Core test binary: drives libdpm-core through its public C API
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*
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* Exercises context lifecycle, configuration, the full load-time
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* validation matrix against the fixture modules, versioned require,
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* typed API access, generic dispatch, and enumeration. Exits nonzero
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* on any failure.
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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 <dpm/core.h>
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#include <cstdio>
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#include <cstring>
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#include <string>
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#ifndef TEST_FIXTURE_MODULES
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#error "TEST_FIXTURE_MODULES must be defined"
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#endif
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#ifndef TEST_FIXTURE_CONF
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#error "TEST_FIXTURE_CONF must be defined"
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#endif
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static int g_failures = 0;
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static int g_checks = 0;
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#define CHECK(cond) \
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do { \
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g_checks++; \
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if (!(cond)) { \
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g_failures++; \
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std::fprintf(stderr, "FAIL %s:%d: %s\n", __FILE__, __LINE__, \
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#cond); \
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} \
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} while (0)
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static bool error_contains(dpm_ctx* ctx, const char* needle)
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{
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const char* err = dpm_last_error(ctx);
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return err != nullptr && std::strstr(err, needle) != nullptr;
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}
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/* Mirror of the good fixture's table layout (consumer-side spec decl). */
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struct good_api_v1_s {
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dpm_api_table_header hdr;
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int (*ping)(void);
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};
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int main(void)
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{
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/* ---- dpm_open: invalid explicit override refuses ---- */
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{
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dpm_open_overrides bad = {"/does/not/exist/conf", nullptr, nullptr, -1};
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CHECK(dpm_open(&bad) == nullptr);
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dpm_open_overrides bad_level = {nullptr, nullptr, nullptr, 99};
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CHECK(dpm_open(&bad_level) == nullptr);
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}
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/* ---- context with fixture config and fixture module path ---- */
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dpm_open_overrides overrides = {TEST_FIXTURE_CONF, TEST_FIXTURE_MODULES,
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nullptr, -1};
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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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/* ---- services ---- */
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{
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CHECK(std::strcmp(dpm_core_version(), DPM_CORE_VERSION_EXPECTED) == 0);
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/* config: values resolve per-module, per-section */
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const char* v = dpm_config_get(ctx, "testmod", "main", "key");
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CHECK(v != nullptr && std::strcmp(v, "value") == 0);
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v = dpm_config_get(ctx, "testmod", "section2", "other");
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CHECK(v != nullptr && std::strcmp(v, "42") == 0);
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CHECK(dpm_config_get(ctx, "testmod", "main", "absent") == nullptr);
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CHECK(dpm_config_get(ctx, "nomodule", "main", "key") == nullptr);
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/* module-path override wins over the config value */
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const char* path = dpm_module_path(ctx);
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CHECK(path != nullptr &&
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std::strncmp(path, TEST_FIXTURE_MODULES,
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std::strlen(TEST_FIXTURE_MODULES)) == 0);
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}
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/* ---- validation matrix: every broken fixture refused, precisely ---- */
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{
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CHECK(dpm_require(ctx, "missing_symbols", nullptr) == 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(dpm_require(ctx, "core_too_new", nullptr) == nullptr);
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CHECK(error_contains(ctx, "update core"));
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CHECK(dpm_require(ctx, "bad_version", nullptr) == nullptr);
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CHECK(error_contains(ctx, "malformed version"));
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CHECK(dpm_require(ctx, "lying_manifest", nullptr) == nullptr);
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CHECK(error_contains(ctx, "does not resolve"));
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CHECK(dpm_require(ctx, "bad_magic", nullptr) == nullptr);
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CHECK(error_contains(ctx, "magic"));
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CHECK(dpm_require(ctx, "nonexistent", nullptr) == nullptr);
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CHECK(error_contains(ctx, "not found"));
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}
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/* ---- known-good module: require, versions, api, execute ---- */
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{
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dpm_module* good = dpm_require(ctx, "good", nullptr);
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CHECK(good != nullptr);
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/* loaded at most once per context */
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CHECK(dpm_require(ctx, "good", nullptr) == good);
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/* minimum-version negotiation */
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CHECK(dpm_require(ctx, "good", "1.0.0") == good);
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CHECK(dpm_require(ctx, "good", "1.2.3") == good);
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CHECK(dpm_require(ctx, "good", "2.0.0") == nullptr);
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CHECK(error_contains(ctx, "below required minimum"));
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CHECK(dpm_require(ctx, "good", "not.a.version") == nullptr);
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CHECK(error_contains(ctx, "malformed minimum version"));
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/* typed access */
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const void* table = dpm_get_api(ctx, good, "good", 1);
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CHECK(table != nullptr);
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if (table) {
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const auto* api = static_cast<const good_api_v1_s*>(table);
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CHECK(api->hdr.magic == DPM_API_TABLE_MAGIC);
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CHECK(api->hdr.size == sizeof(good_api_v1_s));
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CHECK(api->ping() == 42);
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}
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/* absent api/version pairs are known from the manifest */
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CHECK(dpm_get_api(ctx, good, "good", 2) == nullptr);
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CHECK(dpm_get_api(ctx, good, "ghost", 1) == nullptr);
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/* generic dispatch */
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CHECK(dpm_execute(ctx, good, nullptr, 0, nullptr) == 0);
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}
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/* ---- enumeration: only the valid module surfaces ---- */
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{
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dpm_cursor* cur = dpm_list_modules(ctx);
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CHECK(cur != nullptr);
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if (cur) {
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int count = 0;
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dpm_module_info info;
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while (dpm_cursor_next(cur, &info) == 0) {
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count++;
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CHECK(std::strcmp(info.name, "good") == 0);
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CHECK(std::strcmp(info.version, "1.2.3") == 0);
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CHECK(std::strcmp(info.core_min, "0.1.0") == 0);
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CHECK(info.description != nullptr && *info.description);
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}
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CHECK(count == 1);
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dpm_cursor_free(cur);
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}
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/* unreadable module path refuses with a reason */
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dpm_open_overrides bad_path = {TEST_FIXTURE_CONF, "/does/not/exist",
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nullptr, -1};
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dpm_ctx* ctx2 = dpm_open(&bad_path);
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CHECK(ctx2 != nullptr);
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if (ctx2) {
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CHECK(dpm_list_modules(ctx2) == nullptr);
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CHECK(error_contains(ctx2, "module path"));
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dpm_close(ctx2);
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}
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}
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dpm_close(ctx);
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std::printf("%d checks, %d failures\n", g_checks, g_failures);
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return g_failures == 0 ? 0 : 1;
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}
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