Try writing some tests

micronfig/src/lib.rs

@@ -6,3 +6,5 @@ pub mod envvars;
 pub mod envfiles;
 #[cfg(feature = "envdot")]
 pub mod envdot;
+
+pub use micronfig_macros::config;

micronfig_macros/Cargo.toml

@@ -17,5 +17,9 @@ rustdoc-args = ["--document-private-items"]
 syn = "2.0"
 quote = "1.0"
 
+[dev-dependencies]
+trybuild = "1.0"
+micronfig = { version = "0.3.0", path = "../micronfig" }
+
 [lib]
 proc-macro = true

micronfig_macros/tests/configs/01-three-strings.rs

@@ -0,0 +1,7 @@
+use micronfig;
+
+config! {
+	GARAS: String,
+	AUTO: String,
+	BUS: String,
+}

micronfig_macros/tests/configs/02-zero-strings.rs

@@ -0,0 +1,3 @@
+use micronfig;
+
+config! {}

micronfig_macros/tests/trybuild.rs

@@ -0,0 +1,5 @@
+#[test]
+fn trybuild() {
+	let t = trybuild::TestCases::new();
+	t.pass("tests/configs/*.rs");
+}