How to set the tolerance of expect_equal in testthat framework. Ask Question Asked 6 years, 2 months ago. Active 6 years, 2 months ago. Viewed 5k times 26. I would like to know if it is possible in R using testthat test framework to set the tolerance for equality. Currently, if …
How to set tolerance of expect_equal in testthat when comparing data_frames? Ask Question Asked 4 years, 6 months ago. Active 4 years, 6 months ago. Viewed 666 times 7. 1. I’m having trouble using testthat’s tolerance parameter when I check whether two data_frames are equal. Here’s a simple example with two data frames:, Source: R/expect-equality.R These functions provide two levels of strictness when comparing a computation to a reference value. expect_identical () is the baseline; expect_equal () relaxes the test to ignore small numeric differences. In the 2nd edition, expect_identical () uses.
# ‘ `expect_equal` uses [all.equal()]. In the 3rd edition, both functions use # ‘ [waldo](https://github.com/r-lib/waldo). They differ only in that # ‘ `expect_equal()` sets `tolerance = testthat_tolerance()` so that small # ‘ floating point differences are ignored; this also implies that (e.g.) `1` # ‘ and `1L` are treated as equal. # ‘, 3/22/2016 · I’m trying to compare a numerical solution to the empirical solution and get out a matrix looking something like x, below, when I expect y. This is telling me that the average difference between x and y is 0.00232, yet, even if I use tol…
Examples a <- 10 expect_equal(a, 10) # Use equals() when testing for numeric equality sqrt(2) ^ 2 - 1 expect_equal(sqrt(2) ^ 2, 2) # Neither of these forms take floating point representation errors into # account expect_true(sqrt(2) ^ 2 == 2) expect_identical(sqrt(2) ^ 2, 2) # You can pass on additional arguments to all.equal: # Test the ABSOLUTE difference is within .002 expect_equal(object ...expect_equal() is the most commonly used: it uses all.equal() to check for equality within a numerical tolerance : expect_equal (10, 10) expect_equal (10, 10 + 1e-7) expect_equal (10, 11) If you want to test for exact equivalence, or need to compare a more exotic object like an environment, use expect_identical().R object. current. other R object, to be compared with target. … further arguments for different methods, notably the following two, for numerical comparison: tolerance . numeric (ge) 0. Differences smaller than tolerance are not reported. The default value is close to 1.5e-8. scale
