more unit tests, better highlighting

src/tests/script.rs

@@ -0,0 +1,52 @@
+use std::process::{self, Output};
+
+use pretty_assertions::assert_eq;
+
+use super::super::*;
+fn get_script_output(name: &str, args: &[&str]) -> Output {
+	// Resolve the path to the fern binary.
+	// Do not question me.
+	let mut fern_path = env::current_exe()
+		.expect("Failed to get test executable"); // The path to the test executable
+	fern_path.pop(); // Hocus pocus
+	fern_path.pop(); 
+	fern_path.push("fern"); // Abra Kadabra
+
+	if !fern_path.is_file() {
+		fern_path.pop(); 
+		fern_path.pop(); 
+		fern_path.push("release"); 
+		fern_path.push("fern");
+	}
+
+	if !fern_path.is_file() {
+		panic!("where the hell is the binary")
+	}
+
+	process::Command::new(fern_path) // Alakazam
+		.arg(name)
+		.args(args)
+		.output()
+		.expect("Failed to run script")
+}
+#[test]
+fn script_hello_world() {
+	let output = get_script_output("./test_scripts/hello.sh", &[]);
+	assert!(output.status.success());
+	let stdout = String::from_utf8_lossy(&output.stdout);
+	assert_eq!(stdout.trim(), "Hello, World!")
+}
+#[test]
+fn script_cmdsub() {
+	let output = get_script_output("./test_scripts/cmdsub.sh", &[]);
+	assert!(output.status.success());
+	let stdout = String::from_utf8_lossy(&output.stdout);
+	assert_eq!(stdout.trim(), "foo Hello bar")
+}
+#[test]
+fn script_multiline() {
+	let output = get_script_output("./test_scripts/multiline.sh", &[]);
+	assert!(output.status.success());
+	let stdout = String::from_utf8_lossy(&output.stdout);
+	assert_eq!(stdout.trim(), "foo\nbar\nbiz\nbuzz")
+}