Nothing
test_that("summary_lm works", {
set.seed(129)
n <- 100
p <- 2
X <- matrix(rnorm(n * p), n, p) # no intercept!
y <- rnorm(n)
obj <- .lm.fit (x = cbind(1, X), y = y)
coef <- summary_lm(obj)
coef_lm = summary(lm(y~X))$coefficients
expect_true(max(as.numeric(coef - coef_lm)) < 1e-5)
})
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