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from py4j.java_gateway import java_import, JavaGateway


def test_gateway_connect():
    gateway = JavaGateway()
    app = gateway.entry_point
    assert app.ping() == "PONG"


def test_jvm_simple():
    gateway = JavaGateway()
    smaller = gateway.jvm.java.lang.Integer.MIN_VALUE
    bigger = gateway.jvm.java.lang.Integer.MAX_VALUE
    assert bigger > smaller


def test_python_client_java_import_single():
    gateway = JavaGateway()
    java_import(gateway.jvm, "org.apache.dolphinscheduler.common.utils.FileUtils")
    assert hasattr(gateway.jvm, "FileUtils")


def test_python_client_java_import_package():
    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)