Included StringIndexer and StringIndexerModel along with related test…

[ramanathanv]

Hi,

I am creating this pull request that implements the basic methods in StringIndexer and StringIndexerModel class along with Test cases.

This is related to "Implement ML Features" #381

[Niharikadutta]

Could you please add the param and returns description?

[Niharikadutta]

@ramanathanv Is this PR ready to review? I see some StringIndexerTests tests failing in the pipeline.

[ramanathanv]

@ramanathanv Is this PR ready to review? I see some StringIndexerTests tests failing in the pipeline.

Hi @Niharikadutta ,

In the test case, I am trying to compare two List objects using Assert.Equal(). I notice in the test results that the Lists have the same content (see image below). Still there is an error.

I assume that there must be a different way to compare the Lists. Can you please suggest me a way an alternate way to do this comparison?

Thanks.

[imback82]

I notice in the test results that the Lists have the same content (see image below).

I see "..." in the output. Can you compare elements one by one to see where the difference comes from?

[ramanathanv]

I notice in the test results that the Lists have the same content (see image below).

I see "..." in the output. Can you compare elements one by one to see where the difference comes from?

Hi @imback82 ,
I noticed that even the raw log file provides only 3 dots "...". Is there another way for me to check this?

[imback82]

What I meant was if you are comparing two lists, you can compare elements in those lists one by one instead of comparing them at the list level. Does it make sense?

[GoEddie]

In StringIndexer there are a few calls which are missing the get* at the beginning - if I change them all to get* then the test passes for me.

public string GetStringOrderType() => (string)_jvmObject.Invoke("stringOrderType"); 

should be

public string GetStringOrderType() => (string)_jvmObject.Invoke("getStringOrderType"); 

public string[] GetInputCols() => (string[])_jvmObject.Invoke("inputCols"); 

should be

public string[] GetInputCols() => (string[])_jvmObject.Invoke("getInputCols"); 

public string GetInputCol() => (string)_jvmObject.Invoke("inputCol"); 

should be

public string GetInputCol() => (string)_jvmObject.Invoke("getInputCol"); 

public string GetHandleInvalid() => (string)_jvmObject.Invoke("handleInvalid"); 

should be

public string GetHandleInvalid() => (string)_jvmObject.Invoke("getHandleInvalid"); 

If you change those then the tests should pass :)

[ramanathanv]

If you change those then the tests should pass :)

Thanks @GoEddie for identifying the issue . I have fixed the property names. But the test fails for unknown reasons. Can you please re-initiate the build/tests?