frostfs-sdk-java/models/src/test/java/info/frostfs/sdk/UuidExtensionTest.java

package info.frostfs.sdk;

import info.frostfs.sdk.exceptions.ValidationFrostFSException;
import org.junit.jupiter.api.Test;

import java.util.UUID;

import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;

public class UuidExtensionTest {
    private static final UUID TEST_UUID = UUID.fromString("ca70c669-0294-432d-8b83-05fc1475a579");
    private static final byte[] TEST_UUID_BYTES =
            new byte[]{-54, 112, -58, 105, 2, -108, 67, 45, -117, -125, 5, -4, 20, 117, -91, 121};

    @Test
    void uuidAsBytes_success() {
        //When
        var result = UuidExtension.asBytes(TEST_UUID);

        //Then
        assertThat(result).hasSize(16).containsExactly(TEST_UUID_BYTES);
    }

    @Test
    void uuidAsBytes_givenParamsIsNull() {
        //When + Then
        assertThrows(ValidationFrostFSException.class, () -> UuidExtension.asBytes(null));
    }

    @Test
    void bytesAsUuid_success() {
        //When
        var result = UuidExtension.asUuid(TEST_UUID_BYTES);

        //Then
        assertEquals(TEST_UUID, result);
    }

    @Test
    void bytesAsUuid_givenParamsIsNull() {
        //When + Then
        assertThrows(ValidationFrostFSException.class, () -> UuidExtension.asUuid(null));
    }

    @Test
    void bytesAsUuid_wrongArraySize() {
        //Given
        var valueLength15 = new byte[]{-54, 112, -58, 105, 2, -108, 67, 45, -117, -125, 5, -4, 20, 117, -91};
        var valueLength17 = new byte[]{-54, 112, -58, 105, 2, -108, 67, 45, -117, -125, 5, -4, 20, 117, -91, 121, 12};


        //When + Then
        assertThrows(ValidationFrostFSException.class, () -> UuidExtension.asUuid(valueLength15));
        assertThrows(ValidationFrostFSException.class, () -> UuidExtension.asUuid(valueLength17));
    }
}