Add three more tests

micronfig_macros/tests/sources/string_multi_explicit.rs

@@ -0,0 +1,9 @@
+micronfig::config! {
+	GARAS: String,
+	AUTO: String,
+	BUS: String,
+}
+
+fn main() {
+	println!("{:?} {:?} {:?}", GARAS(), AUTO(), BUS())
+}

micronfig_macros/tests/sources/string_multi_implicit.rs

@@ -0,0 +1,9 @@
+micronfig::config! {
+	GARAS,
+	AUTO,
+	BUS,
+}
+
+fn main() {
+	println!("{:?} {:?} {:?}", GARAS(), AUTO(), BUS())
+}

micronfig_macros/tests/sources/string_single_implicit.rs

@@ -0,0 +1,7 @@
+micronfig::config! {
+	GARASAUTO,
+}
+
+fn main() {
+	println!("{:?}", GARASAUTO())
+}

micronfig_macros/tests/tests.rs

@@ -18,3 +18,6 @@ macro_rules! fail {
 
 pass!(empty);
 pass!(string_single_explicit);
+pass!(string_single_implicit);
+pass!(string_multi_explicit);
+pass!(string_multi_implicit);