assertthat
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Showing actual value in case of failed assertion
Example:
assert_that(are_equal(as.integer(difftime(d2, d1, units = 'weeks')), 51))
Actual Result:
Error: as.integer(difftime(d2, d1, units = "weeks")) not equal to 51
Expected Result:
Error: as.integer(difftime(d2, d1, units = "weeks")) not equal to 51. Actual value was: 52.
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