Add blobs.

tests/blobs.rs

@@ -0,0 +1,68 @@
+#![cfg(not(feature = "no_index"))]
+use rhai::{Blob, Engine, EvalAltResult, Scope, INT};
+
+#[test]
+fn test_blobs() -> Result<(), Box<EvalAltResult>> {
+    let mut a = Blob::new();
+    a.push(1);
+    a.push(2);
+    a.push(3);
+
+    let engine = Engine::new();
+    let mut orig_scope = Scope::new();
+    orig_scope.push("x", a);
+
+    let mut scope = orig_scope.clone();
+
+    assert_eq!(engine.eval_with_scope::<INT>(&mut scope, "x[1]")?, 2);
+    assert_eq!(engine.eval_with_scope::<INT>(&mut scope, "x[0]")?, 1);
+    assert_eq!(engine.eval_with_scope::<INT>(&mut scope, "x[-1]")?, 3);
+    assert_eq!(engine.eval_with_scope::<INT>(&mut scope, "x[-3]")?, 1);
+    assert_eq!(
+        engine.eval_with_scope::<INT>(&mut scope, "x += 4; x[3]")?,
+        4
+    );
+
+    #[cfg(not(feature = "no_object"))]
+    {
+        assert_eq!(
+            engine.eval_with_scope::<Blob>(&mut orig_scope.clone(), "x.push(4); x")?,
+            [1, 2, 3, 4]
+        );
+        assert_eq!(
+            engine.eval_with_scope::<Blob>(&mut orig_scope.clone(), "x.insert(0, 4); x")?,
+            [4, 1, 2, 3]
+        );
+        assert_eq!(
+            engine.eval_with_scope::<Blob>(&mut orig_scope.clone(), "x.insert(999, 4); x")?,
+            [1, 2, 3, 4]
+        );
+        assert_eq!(
+            engine.eval_with_scope::<Blob>(&mut orig_scope.clone(), "x.insert(-2, 4); x")?,
+            [1, 4, 2, 3]
+        );
+        assert_eq!(
+            engine.eval_with_scope::<Blob>(&mut orig_scope.clone(), "x.insert(-999, 4); x")?,
+            [4, 1, 2, 3]
+        );
+        assert_eq!(
+            engine.eval_with_scope::<INT>(&mut orig_scope.clone(), "let z = [42]; x[z.len]")?,
+            2
+        );
+        assert_eq!(
+            engine.eval_with_scope::<INT>(&mut orig_scope.clone(), "let z = [2]; x[z[0]]")?,
+            3
+        );
+    }
+
+    assert_eq!(
+        engine.eval_with_scope::<Blob>(&mut orig_scope.clone(), "x += x; x")?,
+        [1, 2, 3, 1, 2, 3]
+    );
+    assert_eq!(
+        engine.eval_with_scope::<Blob>(&mut orig_scope.clone(), "x + x")?,
+        [1, 2, 3, 1, 2, 3]
+    );
+
+    Ok(())
+}