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[jvm-packages] Add methods operating attributes of booster in jvm package, which follow API design in python package. (#4336)

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Xu Xiao
2019-04-09 02:00:35 +08:00
committed by Nan Zhu
parent 9080bba815
commit 60a9af567c
6 changed files with 197 additions and 0 deletions
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30
jvm-packages/xgboost4j/src/test/java/ml/dmlc/xgboost4j/java/BoosterImplTest.java
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@@ -617,4 +617,34 @@ public class BoosterImplTest {
TestCase.assertTrue(booster1error == booster2error);
TestCase.assertTrue(tempBoosterError > booster2error);
}
/**
* test set/get attributes to/from a booster
*
* @throws XGBoostError
*/
@Test
public void testSetAndGetAttrs() throws XGBoostError {
DMatrix trainMat = new DMatrix("../../demo/data/agaricus.txt.train");
DMatrix testMat = new DMatrix("../../demo/data/agaricus.txt.test");
Booster booster = trainBooster(trainMat, testMat);
booster.setAttr("testKey1", "testValue1");
TestCase.assertEquals(booster.getAttr("testKey1"), "testValue1");
booster.setAttr("testKey1", "testValue2");
TestCase.assertEquals(booster.getAttr("testKey1"), "testValue2");
booster.setAttrs(new HashMap<String, String>(){{
put("aa", "AA");
put("bb", "BB");
put("cc", "CC");
}});
Map<String, String> attr = booster.getAttrs();
TestCase.assertEquals(attr.size(), 4);
TestCase.assertEquals(attr.get("testKey1"), "testValue2");
TestCase.assertEquals(attr.get("aa"), "AA");
TestCase.assertEquals(attr.get("bb"), "BB");
TestCase.assertEquals(attr.get("cc"), "CC");
}
}