Unit tests for parsing of country information

[ioanalazar42]

Countries are in TSV format.

Unit Tests -> CountryTest.java to test class Country.java

Test that the parse method does split by tab

• parses into correct number of fields
• parses into the expected fields
  • this might be unnecessary since we can expect that Java method split will not mess with the string itself.

Test that an exception is thrown if parsing is attempted on an empty string

• makes parser a bit more robust
• a newline could very easily be added by accident to the tsv file and parsing would produce a NullPointerException error
• the exception thrown if parsing is attempted on empty string is IllegalArgumentException
  • the test ensures that this exception is thrown when an empty string is passed

Test that a Country object is being constructed properly

• the required fields are present and they have been assigned the right values

e.g. countryInfo = Albania\tAL\tALB\t8\t41\t20 should construct the following Country object

Country(countryInfo) {
  this.name <- Albania
  this.alpha2code <- AL
  this.lat <- 41
  this.lng <- 20  
}