payerPhone attribute is null when options is undefined.
payerPhone attribute is null when requestPayerPhone is undefined.
payerPhone attribute is null when requestPayerPhone is false.
payerPhone attribute is '+12345678910' when requestPayerPhone is true.
payerPhone attribute is '+12345678910' when requestPayerPhone is truthy.

PASS Can construct a payment request (smoke test). 
PASS payerPhone attribute is null when options is undefined. 
PASS payerPhone attribute is null when requestPayerPhone is undefined. 
PASS payerPhone attribute is null when requestPayerPhone is false. 
PASS payerPhone attribute is '+12345678910' when requestPayerPhone is true. 
PASS payerPhone attribute is '+12345678910' when requestPayerPhone is truthy.