Github user sethah commented on a diff in the pull request: https://github.com/apache/spark/pull/14834#discussion_r78104785 --- Diff: mllib/src/test/scala/org/apache/spark/ml/classification/LogisticRegressionSuite.scala --- @@ -232,6 +363,47 @@ class LogisticRegressionSuite } } + test("coefficients and intercept methods") { + val mlr = new LogisticRegression().setMaxIter(1) + val mlrModel = mlr.fit(smallMultinomialDataset) + val thrownCoef = intercept[SparkException] { + mlrModel.coefficients + } + val thrownIntercept = intercept[SparkException] { + mlrModel.intercept + } + assert(thrownCoef.getMessage().contains("use coefficientMatrix instead")) + assert(thrownIntercept.getMessage().contains("use interceptVector instead")) + + val blr = new LogisticRegression().setMaxIter(1) --- End diff -- In tests like these, perhaps we should explicitly set the family to be certain of the code path. We already have a test to check the family detection code. I'll add this in my next commit.
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