tests/integration/test_java_gateway.py

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"""Test pydolphinscheduler java gateway."""


from py4j.java_gateway import JavaGateway, java_import


def test_gateway_connect():
    """Test weather client could connect java gate way or not."""
    gateway = JavaGateway()
    app = gateway.entry_point
    assert app.ping() == "PONG"


def test_jvm_simple():
    """Test use JVM build-in object and operator from java gateway."""
    gateway = JavaGateway()
    smallest = gateway.jvm.java.lang.Integer.MIN_VALUE
    biggest = gateway.jvm.java.lang.Integer.MAX_VALUE
    assert smallest is not None and biggest is not None
    assert biggest > smallest


def test_python_client_java_import_single():
    """Test import single class from java gateway."""
    gateway = JavaGateway()
    java_import(gateway.jvm, "org.apache.dolphinscheduler.common.utils.FileUtils")
    assert hasattr(gateway.jvm, "FileUtils")


def test_python_client_java_import_package():
    """Test import package contain multiple class from java gateway."""
    gateway = JavaGateway()
    java_import(gateway.jvm, "org.apache.dolphinscheduler.common.utils.*")
    # test if jvm view have some common utils
    for util in ("FileUtils", "OSUtils", "DateUtils"):
        assert hasattr(gateway.jvm, util)