lix/tests/unit/libexpr/json.cc

#include "tests/libexpr.hh"
#include "lix/libexpr/value-to-json.hh"

namespace nix {
// Testing the conversion to JSON

    class JSONValueTest : public LibExprTest {
        protected:
            std::string getJSONValue(Value& value) {
                std::stringstream ss;
                NixStringContext ps;
                printValueAsJSON(state, true, value, noPos, ss, ps);
                return ss.str();
            }
    };

    TEST_F(JSONValueTest, null) {
        Value v = Value::VNULL;
        ASSERT_EQ(getJSONValue(v), "null");
    }

    TEST_F(JSONValueTest, BoolFalse) {
        Value v = {NewValueAs::boolean, false};
        ASSERT_EQ(getJSONValue(v),"false");
    }

    TEST_F(JSONValueTest, BoolTrue) {
        Value v = {NewValueAs::boolean, true};
        ASSERT_EQ(getJSONValue(v), "true");
    }

    TEST_F(JSONValueTest, IntPositive) {
        Value v = {NewValueAs::integer, 100};
        ASSERT_EQ(getJSONValue(v), "100");
    }

    TEST_F(JSONValueTest, IntNegative) {
        Value v = {NewValueAs::integer, -100};
        ASSERT_EQ(getJSONValue(v), "-100");
    }

    TEST_F(JSONValueTest, String) {
        Value v = {NewValueAs::string, "test"};
        ASSERT_EQ(getJSONValue(v), "\"test\"");
    }

    TEST_F(JSONValueTest, StringQuotes) {
        Value v = {NewValueAs::string, "test\""};
        ASSERT_EQ(getJSONValue(v), "\"test\\\"\"");
    }

    // The dummy store doesn't support writing files. Fails with this exception message:
    // C++ exception with description "error: operation 'addToStoreFromDump' is
    // not supported by store 'dummy'" thrown in the test body.
    TEST_F(JSONValueTest, DISABLED_Path) {
        Value v = {NewValueAs::path, "test"};
        ASSERT_EQ(getJSONValue(v), "\"/nix/store/g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x\"");
    }
} /* namespace nix */