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test_that("print method doesn't change unexpectedly", {
lf1 <- lazy_frame(x = 1, y = 2, .name = "lf1")
lf2 <- lazy_frame(x = 1, z = 2, .name = "lf2")
lf3 <- lazy_frame(x = 1, z = 2, .name = "lf3")
expect_snapshot(sql_build(union(lf1, lf2) %>% union_all(lf3)))
})
test_that("generated sql doesn't change unexpectedly", {
lf <- lazy_frame(x = 1, y = 2)
expect_snapshot(union(lf, lf))
expect_snapshot(setdiff(lf, lf))
expect_snapshot(intersect(lf, lf))
expect_snapshot(union(lf, lf, all = TRUE))
expect_snapshot(setdiff(lf, lf, all = TRUE))
expect_snapshot(intersect(lf, lf, all = TRUE))
})
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