diff --git a/tests/testthat/test-storage.R b/tests/testthat/test-storage.R
new file mode 100644
index 0000000..ce3d999
--- /dev/null
+++ b/tests/testthat/test-storage.R
@@ -0,0 +1,24 @@
+box::use(
+  fs[file_exists],
+  testthat[...], # nolint
+  withr[with_tempdir],
+)
+
+box::use(
+  app / storage,
+)
+
+describe("new", {
+  it("should create a new csv storage if csv path is provided", {
+    with_tempdir({
+      # Arrange
+      path <- "store.csv"
+
+      # Act
+      .storage <- storage$new(path, schema = list(amount = numeric()))
+
+      # Assert
+      expect_true(file_exists(.storage))
+    })
+  })
+})