SEG_NON_POSITIVE_MESSAGE = "The segment size must be a positive integer"
OVERLAP_LARGE_MESSAGE = "The segment size must be greater than " \
    "the overlap of words between chunks"
PROP_NEGATIVE_MESSAGE = "The proportional size of the last segment must be " \
    "zero or greater"
OVERLAP_NEGATIVE_MESSAGE = "The overlap between chunks must be zero or greater"
NON_POSITIVE_NUM_MESSAGE = "the segment size should larger be positive"
NEG_NUM_MESSAGE = "the overlap or last segment proportion should " \
    "not be negative"
LARGER_CHUNK_SIZE_MESSAGE = "the segment size should be larger " \
    "than the overlap size"

@@ -614,8 +614,75 @@
 p size%22%0A
+EMPTY_INPUT_MESSAGE = %22the input must contain desired information%22%0A

Add error message