test/jdk/java/lang/constant/PackageDescTest.java

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/*
 * @test
 * @summary Testing PackageDesc.
 * @run junit PackageDescTest
 */
import java.lang.constant.PackageDesc;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;

class PackageDescTest {
    @ParameterizedTest
    @ValueSource(strings = {"a/b.d", "a[]", "a;", "a..b", "a.b.", ".a.b"})
    void testInvalidPackageNames(String pkg) {
        assertThrows(IllegalArgumentException.class, () -> PackageDesc.of(pkg));
    }

    @ParameterizedTest
    @ValueSource(strings = {"a/b.d", "a[]", "a;", "a//b", "a/b/", "/a/b"})
    void testInvalidInternalPackageNames(String pkg) {
        assertThrows(IllegalArgumentException.class, () -> PackageDesc.ofInternalName(pkg));
    }

    @Test
    void testNullInternalPackageNames() {
        assertThrows(NullPointerException.class, () -> PackageDesc.ofInternalName(null));
    }

    @Test
    void testValidPackageNames() {
        assertEquals(PackageDesc.of(""), PackageDesc.ofInternalName(""));
        assertEquals(PackageDesc.of("a"), PackageDesc.ofInternalName("a"));
        assertEquals(PackageDesc.of("a.b"), PackageDesc.ofInternalName("a/b"));
        assertEquals(PackageDesc.of("a.b.c"), PackageDesc.ofInternalName("a/b/c"));
        assertEquals(PackageDesc.of("a").name(), PackageDesc.ofInternalName("a").name());
        assertEquals(PackageDesc.of("a.b").name(), PackageDesc.ofInternalName("a/b").name());
        assertEquals(PackageDesc.of("a.b.c").name(), PackageDesc.ofInternalName("a/b/c").name());
        assertEquals(PackageDesc.of("a").internalName(), PackageDesc.ofInternalName("a").internalName());
        assertEquals(PackageDesc.of("a.b").internalName(), PackageDesc.ofInternalName("a/b").internalName());
        assertEquals(PackageDesc.of("a.b.c").internalName(), PackageDesc.ofInternalName("a/b/c").internalName());
    }
}