/** See SPARK-5904. Abstract vararg methods defined in Scala do not work in Java. */
@Test
public void testVarargMethods() {
DataFrame df = context.table("testData");
df.toDF("key1", "value1");
df.select("key", "value");
df.select(col("key"), col("value"));
df.selectExpr("key", "value + 1");
df.sort("key", "value");
df.sort(col("key"), col("value"));
df.orderBy("key", "value");
df.orderBy(col("key"), col("value"));
df.groupBy("key", "value").agg(col("key"), col("value"), sum("value"));
df.groupBy(col("key"), col("value")).agg(col("key"), col("value"), sum("value"));
df.agg(first("key"), sum("value"));
df.groupBy().avg("key");
df.groupBy().mean("key");
df.groupBy().max("key");
df.groupBy().min("key");
df.groupBy().stddev("key");
df.groupBy().sum("key");
// Varargs in column expressions
df.groupBy().agg(countDistinct("key", "value"));
df.groupBy().agg(countDistinct(col("key"), col("value")));
df.select(coalesce(col("key")));
// Varargs with mathfunctions
DataFrame df2 = context.table("testData2");
df2.select(exp("a"), exp("b"));
df2.select(exp(log("a")));
df2.select(pow("a", "a"), pow("b", 2.0));
df2.select(pow(col("a"), col("b")), exp("b"));
df2.select(sin("a"), acos("b"));
df2.select(rand(), acos("b"));
df2.select(col("*"), randn(5L));
}
