Github user imatiach-msft commented on a diff in the pull request: https://github.com/apache/spark/pull/17034#discussion_r103853075 --- Diff: mllib/src/test/scala/org/apache/spark/ml/regression/AFTSurvivalRegressionSuite.scala --- @@ -361,6 +363,36 @@ class AFTSurvivalRegressionSuite } } + test("should support all NumericType censors, and not support other types") { + val df = spark.createDataFrame(Seq( + (0, Vectors.dense(0)), + (1, Vectors.dense(1)), + (2, Vectors.dense(2)), + (3, Vectors.dense(3)), + (4, Vectors.dense(4)) + )).toDF("label", "features") + .withColumn("censor", lit(0.0)) + val aft = new AFTSurvivalRegression().setMaxIter(1) + val expected = aft.fit(df) + + val types = Seq(ShortType, LongType, IntegerType, FloatType, ByteType, DecimalType(10, 0)) + types.foreach { t => + val actual = aft.fit(df.select(col("label"), col("features"), + col("censor").cast(t))) + assert(expected.intercept === actual.intercept) + assert(expected.coefficients === actual.coefficients) + } + + val dfWithStringCensors = spark.createDataFrame(Seq( + (0, Vectors.dense(0, 2, 3), "0") + )).toDF("label", "features", "censor") + val thrown = intercept[IllegalArgumentException] { --- End diff -- can you wrap this in a withClue("Column censor must be of type NumericType but was actually of type StringType") { ... }
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