Add tests.

tests/eval.rs

@@ -6,6 +6,20 @@ fn test_eval() -> Result<(), Box<EvalAltResult>> {
 
     assert_eq!(engine.eval::<INT>(r#"eval("40 + 2")"#)?, 42);
 
+    assert_eq!(
+        engine.eval::<INT>(
+            r#"
+                let foo = 42;
+
+                eval("let foo = 123");
+                eval("let xyz = 10");
+
+                foo + xyz
+            "#
+        )?,
+        133
+    );
+
     Ok(())
 }
 
@@ -33,6 +47,72 @@ fn test_eval_blocks() -> Result<(), Box<EvalAltResult>> {
         41
     );
 
+    assert_eq!(
+        engine.eval::<INT>(
+            r#"
+                let foo = 42;
+
+                eval("{ let foo = 123; }");
+
+                foo
+            "#
+        )?,
+        42
+    );
+
+    assert_eq!(
+        engine.eval::<INT>(
+            r#"
+                let foo = 42;
+                { { {
+                    eval("let foo = 123");
+                } } }
+                foo
+            "#
+        )?,
+        42
+    );
+
+    Ok(())
+}
+
+#[cfg(not(feature = "no_function"))]
+#[cfg(not(feature = "no_module"))]
+#[test]
+fn test_eval_globals() -> Result<(), Box<EvalAltResult>> {
+    let engine = Engine::new();
+
+    assert_eq!(
+        engine.eval::<INT>(
+            r#"
+                const XYZ = 123;
+
+                fn foo() { global::XYZ } 
+                {
+                    eval("const XYZ = 42;");
+                }
+
+                foo()
+            "#
+        )?,
+        123
+    );
+
+    assert_eq!(
+        engine.eval::<INT>(
+            r#"
+                const XYZ = 123;
+
+                fn foo() { global::XYZ } 
+
+                eval("const XYZ = 42;");
+
+                foo()
+            "#
+        )?,
+        42
+    );
+
     Ok(())
 }
 

tests/functions.rs

@@ -181,5 +181,43 @@ fn test_functions_bang() -> Result<(), Box<EvalAltResult>> {
         123
     );
 
+    assert_eq!(
+        engine.eval::<INT>(
+            "
+                fn foo() {
+                    let hello = bar + 42;
+                }
+
+                let bar = 999;
+                let hello = 123;
+
+                foo!();
+
+                hello
+            ",
+        )?,
+        123
+    );
+
+    assert_eq!(
+        engine.eval::<INT>(
+            r#"
+                fn foo(x) {
+                    let hello = bar + 42 + x;
+                }
+
+                let bar = 999;
+                let hello = 123;
+
+                let f = Fn("foo");
+
+                call!(f, 1);
+
+                hello
+            "#,
+        )?,
+        123
+    );
+
     Ok(())
 }