1 files changed, 24 insertions, 0 deletions
diff --git a/src/bootstrap/config/tests.rs b/src/bootstrap/config/tests.rs
new file mode 100644
index 000000000..c30c91317
--- /dev/null
+++ b/src/bootstrap/config/tests.rs
@@ -0,0 +1,24 @@
+use super::{Config, TomlConfig};
+use std::path::Path;
+
+fn toml(config: &str) -> impl '_ + Fn(&Path) -> TomlConfig {
+    |&_| toml::from_str(config).unwrap()
+}
+
+fn parse(config: &str) -> Config {
+    Config::parse_inner(&["check".to_owned(), "--config=/does/not/exist".to_owned()], toml(config))
+}
+
+#[test]
+fn download_ci_llvm() {
+    let parse_llvm = |s| parse(s).llvm_from_ci;
+    let if_available = parse_llvm("llvm.download-ci-llvm = \"if-available\"");
+
+    assert!(parse_llvm("llvm.download-ci-llvm = true"));
+    assert!(!parse_llvm("llvm.download-ci-llvm = false"));
+    assert_eq!(parse_llvm(""), if_available);
+    assert_eq!(parse_llvm("rust.channel = \"dev\""), if_available);
+    assert!(!parse_llvm("rust.channel = \"stable\""));
+}
+
+// FIXME: add test for detecting `src` and `out`