1 files changed, 27 insertions, 0 deletions
diff --git a/tests/ui/check-cfg/cargo-feature.rs b/tests/ui/check-cfg/cargo-feature.rs
new file mode 100644
index 000000000..fe343d0a6
--- /dev/null
+++ b/tests/ui/check-cfg/cargo-feature.rs
@@ -0,0 +1,27 @@
+// This test checks that when no features are passed by Cargo we
+// suggest adding some in the Cargo.toml instead of vomitting a
+// list of all the expected names
+//
+// check-pass
+// revisions: some none
+// rustc-env:CARGO=/usr/bin/cargo
+// compile-flags: --check-cfg=cfg() -Z unstable-options
+// [some]compile-flags: --check-cfg=cfg(feature,values("bitcode"))
+// [some]compile-flags: --check-cfg=cfg(CONFIG_NVME,values("y"))
+// [none]error-pattern:Cargo.toml
+
+#[cfg(feature = "serde")]
+//[none]~^ WARNING unexpected `cfg` condition name
+//[some]~^^ WARNING unexpected `cfg` condition value
+fn ser() {}
+
+#[cfg(tokio_unstable)]
+//~^ WARNING unexpected `cfg` condition name
+fn tokio() {}
+
+#[cfg(CONFIG_NVME = "m")]
+//[none]~^ WARNING unexpected `cfg` condition name
+//[some]~^^ WARNING unexpected `cfg` condition value
+fn tokio() {}
+
+fn main() {}