diff --git a/tests/testthat/test-read_cargo_metadata.R b/tests/testthat/test-read_cargo_metadata.R
index 79feaff1..6ec99b6e 100644
--- a/tests/testthat/test-read_cargo_metadata.R
+++ b/tests/testthat/test-read_cargo_metadata.R
@@ -11,4 +11,28 @@ test_that("read_cargo_metadata() returns crate or workspace metadata", {
   out <- read_cargo_metadata(path)
 
   expect_type(out, "list")
+
+  expect_equal(
+    out[["packages"]][["name"]],
+    "testpkg"
+  )
+
+  expect_equal(
+    out[["packages"]][["version"]],
+    "0.1.0"
+  )
+
+  expect_equal(
+    out[["packages"]][["dependencies"]][[1]][["name"]],
+    "extendr-api"
+  )
+
+  expect_equal(
+    out[["workspace_root"]],
+    normalizePath(
+      file.path(path, "src", "rust"),
+      winslash = "\\",
+      mustWork = FALSE
+    )
+  )
 })