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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