diff --git a/tests/test_lib_funcs.rs b/tests/test_lib_funcs.rs
new file mode 100644
index 0000000..8eacede
--- /dev/null
+++ b/tests/test_lib_funcs.rs
@@ -0,0 +1,94 @@
+mod lib_func_tests {
+    use relish::stdlib::{get_stdlib};
+    use relish::ast::{lex, eval, VTable, FTable, Ctr};
+    use std::rc::Rc;
+    use std::cell::RefCell;
+
+    #[test]
+    fn test_simple_echo() {
+        let document = "(echo 'test')";
+        let result = "test\n";
+        let vt = Rc::new(RefCell::new(VTable::new()));
+        let ft: Rc<RefCell<FTable>>;
+        match get_stdlib() {
+            Ok(f) => ft = f,
+            Err(s) => {
+                ft = Rc::new(RefCell::new(FTable::new()));
+                println!("Couldnt get stdlib: {}!", s);
+                assert!(false)
+            }
+        }
+
+        match lex(document.to_string()) {
+            Err(s) => {
+                println!("Couldnt lex {}: {}\n", document, s);
+                assert!(false);
+            },
+
+            Ok(tree) => {
+                match eval(tree, vt.clone(), ft.clone(), false) {
+                    Err(s) => {
+                        println!("Couldnt eval {}: {}\n", document, s);
+                        assert!(false);
+                    },
+
+                    Ok(ctr) => {
+                        match ctr {
+                            Ctr::Symbol(_)  => assert!(false),
+                            Ctr::String(s)  => assert_eq!(s, result),
+                            Ctr::Integer(_) => assert!(false),
+                            Ctr::Float(_)   => assert!(false),
+                            Ctr::Bool(_)    => assert!(false),
+                            Ctr::Seg(_)     => assert!(false),
+                            Ctr::None       => assert!(false)
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    #[test]
+    fn test_poly_echo() {
+        let document = "(echo 'test' 1 2 3)";
+        let result = "test\n1\n2\n3\n";
+        let vt = Rc::new(RefCell::new(VTable::new()));
+        let ft: Rc<RefCell<FTable>>;
+        match get_stdlib() {
+            Ok(f) => ft = f,
+            Err(s) => {
+                ft = Rc::new(RefCell::new(FTable::new()));
+                println!("Couldnt get stdlib: {}!", s);
+                assert!(false)
+            }
+        }
+
+        match lex(document.to_string()) {
+            Err(s) => {
+                println!("Couldnt lex {}: {}\n", document, s);
+                assert!(false);
+            },
+
+            Ok(tree) => {
+                match eval(tree, vt.clone(), ft.clone(), false) {
+                    Err(s) => {
+                        println!("Couldnt eval {}: {}\n", document, s);
+                        assert!(false);
+                    },
+
+                    Ok(ctr) => {
+                        match ctr {
+                            Ctr::Symbol(_)  => assert!(false),
+                            Ctr::String(s)  => assert_eq!(s, result),
+                            Ctr::Integer(_) => assert!(false),
+                            Ctr::Float(_)   => assert!(false),
+                            Ctr::Bool(_)    => assert!(false),
+                            Ctr::Seg(_)     => assert!(false),
+                            Ctr::None       => assert!(false)
+                        }
+                    }
+                }
+            }
+        }
+    }
+}