ydb/util/system/env_ut.cpp

#include <library/cpp/testing/unittest/registar.h>

#include <util/generic/string.h>
#include "env.h"

Y_UNIT_TEST_SUITE(EnvTest) {
    Y_UNIT_TEST(GetSetEnvTest) {
        TString key = "util_GETENV_TestVar";
        TString value = "Some value for env var";
        TString def = "Some default value for env var";
        // first of all, it should be clear
        UNIT_ASSERT_VALUES_EQUAL(GetEnv(key), TString());
        UNIT_ASSERT_VALUES_EQUAL(GetEnv(key, def), def);
        SetEnv(key, value);
        // set and see what value we get here
        UNIT_ASSERT_VALUES_EQUAL(GetEnv(key), value);
        UNIT_ASSERT_VALUES_EQUAL(GetEnv(key, def), value);
        // set empty value
        SetEnv(key, TString());
        UNIT_ASSERT_VALUES_EQUAL(GetEnv(key), TString());

        // check for long values, see IGNIETFERRO-214
        TString longKey = "util_GETENV_TestVarLong";
        TString longValue{1500, 't'};
        UNIT_ASSERT_VALUES_EQUAL(GetEnv(longKey), TString());
        SetEnv(longKey, longValue);
        UNIT_ASSERT_VALUES_EQUAL(GetEnv(longKey), longValue);
        SetEnv(longKey, TString());
        UNIT_ASSERT_VALUES_EQUAL(GetEnv(longKey), TString());
    }
}