Refactor into some edition-specific snapshot tests

tests/testthat/_snaps/edition-1/read-csv.md

@@ -0,0 +1,41 @@
+# warning lines are correct after skipping
+
+    Code
+      out3 <- read_csv(I("v1,v2\n\n1,2\n\n3,4"), col_types = "i")
+    Warning <simpleWarning>
+      Unnamed `col_types` should have the same length as `col_names`. Using smaller of the two.
+      2 parsing failures.
+      row col  expected    actual         file
+        1  -- 1 columns 2 columns literal data
+        2  -- 1 columns 2 columns literal data
+
+---
+
+    Code
+      out4 <- read_csv(I("v1,v2\n#foo\n1,2\n#bar\n3,4"), col_types = "i", comment = "#")
+    Warning <simpleWarning>
+      Unnamed `col_types` should have the same length as `col_names`. Using smaller of the two.
+      2 parsing failures.
+      row col  expected    actual         file
+        1  -- 1 columns 2 columns literal data
+        2  -- 1 columns 2 columns literal data
+
+# too few or extra col_types generates warnings
+
+    Code
+      out1 <- read_csv(I("v1,v2\n1,2"), col_types = "i", lazy = FALSE)
+    Warning <simpleWarning>
+      Unnamed `col_types` should have the same length as `col_names`. Using smaller of the two.
+      1 parsing failure.
+      row col  expected    actual         file
+        1  -- 1 columns 2 columns literal data
+
+# comments are ignored regardless of where they appear
+
+    Code
+      out4 <- read_csv(I("x,y\n1,#comment"), comment = "#", col_types = "cc")
+    Warning <simpleWarning>
+      1 parsing failure.
+      row col  expected    actual         file
+        1  -- 2 columns 1 columns literal data
+

tests/testthat/_snaps/edition-2/read-csv.md

@@ -0,0 +1,5 @@
+# comments are ignored regardless of where they appear
+
+    Code
+      out4 <- read_csv(I("x,y\n1,#comment"), comment = "#", col_types = "cc")
+

tests/testthat/helper.R

@@ -42,3 +42,7 @@ skip_if_edition_second <- function() {
 skip_if_edition_first <- function() {
   skip_if(edition_first())
 }
+
+edition_variant <- function() {
+  paste0("edition-", edition_get())
+}

tests/testthat/test-read-csv.R

@@ -135,8 +135,14 @@ test_that("warning lines are correct after skipping", {
 
   expect_equal(problems(out2)$row, 1)
 
-  expect_warning(out3 <- read_csv(I("v1,v2\n\n1,2\n\n3,4"), col_types = "i"))
-  expect_warning(out4 <- read_csv(I("v1,v2\n#foo\n1,2\n#bar\n3,4"), col_types = "i", comment = "#"))
+  expect_snapshot(
+    out3 <- read_csv(I("v1,v2\n\n1,2\n\n3,4"), col_types = "i"),
+    variant = edition_variant()
+  )
+  expect_snapshot(
+    out4 <- read_csv(I("v1,v2\n#foo\n1,2\n#bar\n3,4"), col_types = "i", comment = "#"),
+    variant = edition_variant()
+  )
 
   expect_equal(problems(out3)$row, c(1, 2))
 
@@ -158,7 +164,10 @@ test_that("extra columns generates warnings", {
 
 test_that("too few or extra col_types generates warnings", {
   skip_if_edition_second()
-  expect_warning(out1 <- read_csv(I("v1,v2\n1,2"), col_types = "i", lazy = FALSE))
+  expect_snapshot(
+    out1 <- read_csv(I("v1,v2\n1,2"), col_types = "i", lazy = FALSE),
+    variant = edition_variant()
+  )
   expect_equal(problems(out1)$expected, "1 columns")
   expect_equal(problems(out1)$actual, "2 columns")
 
@@ -219,7 +228,10 @@ test_that("comments are ignored regardless of where they appear", {
   expect_equal(out2$x, 1)
   expect_equal(out3$x, 1)
 
-  out4 <- read_csv(I("x,y\n1,#comment"), comment = "#", col_types = "cc")
+  expect_snapshot(
+    out4 <- read_csv(I("x,y\n1,#comment"), comment = "#", col_types = "cc"),
+    variant = edition_variant()
+  )
   expect_equal(out4$y, NA_character_)
 
   expect_warning(out5 <- read_csv(I("x1,x2,x3\nA2,B2,C2\nA3#,B2,C2\nA4,A5,A6"), comment = "#", lazy = FALSE))

tests/testthat/test-write.R

@@ -57,7 +57,11 @@ test_that("roundtrip preserves dates and datetimes", {
 })
 
 test_that("fails to create file in non-existent directory", {
-  expect_error(write_csv(mtcars, file.path(tempdir(), "/x/y")), "open")
+  expect_error(
+    expect_warning(
+      write_csv(mtcars, file.path(tempdir(), "/x/y")), "open"
+    )
+  )
 })
 
 test_that("write_excel_csv/csv2 includes a byte order mark", {