The parser just recognizes case sensitive strings

[manoelrui]

@gunthercox I tested the parser with some test cases to get datetime objects and I realised that upper letters are crashing the parser when it try to compare strings.

In the first scenario below, as the parser uses the function date_from_relative_week_year, the function argument time assigned with string "Next" is not equals to string "next" and the function will return a "NoneType".

Scenario 1:

from chatterbot import parsing
text = "Next Week"
parser = parsing.datetime_parsing(text)
print(str(parser))

In the second scenario, the parser uses the function convert_time_to_hour_minute. As similar before, the function will return a "NoneType" because the comparison between the convention argument (storing the string "PM") and string "pm" is false.

Scenario 2:

from chatterbot import parsing
text = "2PM"
parser = parsing.datetime_parsing(text)
print(str(parser))

[gunthercox]

@manoelrui I think you've correctly identified this bug. Would you be able to add some test cases, similar to what @vkosuri had in his similar pull request?

[manoelrui]

@gunthercox I added some test cases to test case-insensitive scenarios. Would you have any suggestions/comments regarding these scenarios or additional scenarios ?

[vkosuri]

👍

[gunthercox]

@manoelrui The test cases look great, awesome work!

[gunthercox]

I've merged the commits 64762ba dbcda9a into master by cherry-picking them. The changes will be available in the next ChatterBot release. @manoelrui Thank you again.