[Improvement] Ensure that converting a string to a namespace validates all input #7516
Description
What would you like to be improved?
Add these tests to TestNamespace causes test failures:
@Test
public void testFromString() {
Assertions.assertEquals(Namespace.empty(), Namespace.fromString(""));
Assertions.assertEquals(Namespace.of("a", "b"), Namespace.fromString("a.b"));
Assertions.assertEquals(Namespace.of("a"), Namespace.fromString("a"));
}
@Test
public void testFromStringInvalidArgs() {
Assertions.assertThrows(IllegalArgumentException.class, () -> Namespace.fromString(null));
Assertions.assertThrows(IllegalArgumentException.class, () -> Namespace.fromString(".a"));
Assertions.assertThrows(IllegalArgumentException.class, () -> Namespace.fromString("a."));
Assertions.assertThrows(IllegalArgumentException.class, () -> Namespace.fromString("a..b"));
}
How should we improve?
Fix fromString in Namespace.java so that the tests pass.