Function TEST

test/unit/proj_context_test.cpp:91–127

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TEST(proj_context, proj_context_set_file_finder) {

    std::string dirname;
    auto filename = createTempDict(dirname, "temp_proj_dic1");
    if (filename.empty())
        return;

    auto ctx = proj_context_create();

    struct FinderData {
        PJ_CONTEXT *got_ctx = nullptr;
        std::string dirname{};
        std::string tmpFilename{};
    };

    const auto finder = [](PJ_CONTEXT *got_ctx, const char *file,
                           void *user_data) -> const char * {
        auto finderData = static_cast<FinderData *>(user_data);
        finderData->got_ctx = got_ctx;
        finderData->tmpFilename = finderData->dirname;
        finderData->tmpFilename += DIR_CHAR;
        finderData->tmpFilename += file;
        return finderData->tmpFilename.c_str();
    };

    FinderData finderData;
    finderData.dirname = dirname;
    proj_context_set_file_finder(ctx, finder, &finderData);

    auto P = proj_create(ctx, "+init=temp_proj_dic1:MY_PIPELINE");
    EXPECT_NE(P, nullptr);
    proj_destroy(P);

    EXPECT_EQ(finderData.got_ctx, ctx);

    proj_context_destroy(ctx);
}

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