From e8cebf716a5eb797d318e9c247613a54dcd522f2 Mon Sep 17 00:00:00 2001
From: "Trevor L. Davis" <trevor.l.davis@gmail.com>
Date: Thu, 25 Apr 2024 10:22:30 -0700
Subject: [PATCH] tests: Add "area" and "histogram" geom tests

---
 tests/testthat/_snaps/geom/area.svg      |  84 ++++++++++
 tests/testthat/_snaps/geom/histogram.svg | 185 +++++++++++++++++++++++
 tests/testthat/test-geom.R               |  11 ++
 3 files changed, 280 insertions(+)
 create mode 100644 tests/testthat/_snaps/geom/area.svg
 create mode 100644 tests/testthat/_snaps/geom/histogram.svg

diff --git a/tests/testthat/_snaps/geom/area.svg b/tests/testthat/_snaps/geom/area.svg
new file mode 100644
index 0000000..8423c45
--- /dev/null
+++ b/tests/testthat/_snaps/geom/area.svg
@@ -0,0 +1,84 @@
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diff --git a/tests/testthat/test-geom.R b/tests/testthat/test-geom.R
index 424d9a3..052f5f5 100644
--- a/tests/testthat/test-geom.R
+++ b/tests/testthat/test-geom.R
@@ -4,6 +4,12 @@ test_that("geometry patterns work as expected", {
     skip_if_not_installed("vdiffr")
     library("vdiffr")
 
+    expect_doppelganger("area", {
+        huron <- data.frame(year = 1875:1972, level = as.vector(LakeHuron))
+        ggplot(huron, aes(year)) +
+            geom_area_pattern(aes(y = level))
+    })
+
     expect_doppelganger("bar", {
         ggplot(ggplot2::mpg, aes(class)) +
           geom_bar_pattern(
@@ -109,6 +115,11 @@ test_that("geometry patterns work as expected", {
         coord_fixed(ratio = 100)
     })
 
+    expect_doppelganger("histogram", {
+         ggplot(diamonds, aes(carat)) +
+             geom_histogram_pattern(pattern = "stripe", bins = 30)
+    })
+
     expect_doppelganger("polygon", {
       angle <- seq(0, 2*pi, length.out = 7) + pi/6
       polygon_df <- data.frame(