hugegraph-test/src/main/java/org/apache/hugegraph/core/EdgeCoreTest.java [6591:6616]:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
        results = graph.traversal().E()
                       .has("startTime", P.gt("2019-1-1 00:00:00"))
                       .toList();
        Assert.assertEquals(edges, results);

        results = graph.traversal().E()
                       .has("startTime", P.lt("2019-12-12 23:59:59"))
                       .toList();
        Assert.assertEquals(edges, results);

        results = graph.traversal().E()
                       .has("startTime", "2019-1-1 00:00:30")
                       .toList();
        Assert.assertEquals(edges, results);

        results = graph.traversal().E()
                       .has("endTime", P.gt("2019-1-1 00:00:00"))
                       .toList();
        Assert.assertEquals(edges, results);

        results = graph.traversal().E()
                       .has("endTime", P.lt("2019-12-12 23:59:59"))
                       .toList();
        Assert.assertEquals(edges, results);

        results = graph.traversal().E()
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hugegraph-test/src/main/java/org/apache/hugegraph/core/EdgeCoreTest.java [6642:6667]:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
        results = graph.traversal().E()
                       .has("startTime", P.gt("2019-1-1 00:00:00"))
                       .toList();
        Assert.assertEquals(edges, results);

        results = graph.traversal().E()
                       .has("startTime", P.lt("2019-12-12 23:59:59"))
                       .toList();
        Assert.assertEquals(edges, results);

        results = graph.traversal().E()
                       .has("startTime", "2019-1-1 00:00:30")
                       .toList();
        Assert.assertEquals(edges, results);

        results = graph.traversal().E()
                       .has("endTime", P.gt("2019-1-1 00:00:00"))
                       .toList();
        Assert.assertEquals(edges, results);

        results = graph.traversal().E()
                       .has("endTime", P.lt("2019-12-12 23:59:59"))
                       .toList();
        Assert.assertEquals(edges, results);

        results = graph.traversal().E()
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