serde_v8: add tests/ser

serde_v8/tests/ser.rs

@@ -0,0 +1,115 @@
+use rusty_v8 as v8;
+
+use serde::Serialize;
+
+use serde_v8::utils::{js_exec, v8_do};
+
+#[derive(Debug, Serialize, PartialEq)]
+struct MathOp {
+  pub a: u64,
+  pub b: u64,
+  pub operator: Option<String>,
+}
+
+// Utility JS code (obj equality, etc...)
+const JS_UTILS: &str = r#"
+// Shallow obj equality (don't use deep objs for now)
+function objEqual(object1, object2) {
+  const keys1 = Object.keys(object1);
+  const keys2 = Object.keys(object2);
+
+  if (keys1.length !== keys2.length) {
+    return false;
+  }
+
+  for (let key of keys1) {
+    if (object1[key] !== object2[key]) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+function arrEqual(a, b) {
+  return Array.isArray(a) &&
+    Array.isArray(b) &&
+    a.length === b.length &&
+    a.every((val, index) => val === b[index]);
+}
+"#;
+
+fn sercheck<T: Serialize>(val: T, code: &str) -> bool {
+  let mut equal = false;
+
+  v8_do(|| {
+    // Setup isolate
+    let isolate = &mut v8::Isolate::new(v8::CreateParams::default());
+    let handle_scope = &mut v8::HandleScope::new(isolate);
+    let context = v8::Context::new(handle_scope);
+    let scope = &mut v8::ContextScope::new(handle_scope, context);
+
+    // Set value as "x" in global scope
+    let global = context.global(scope);
+    let v8_key = serde_v8::to_v8(scope, "x").unwrap();
+    let v8_val = serde_v8::to_v8(scope, val).unwrap();
+    global.set(scope, v8_key, v8_val);
+
+    // Load util functions
+    js_exec(scope, JS_UTILS);
+    // Execute equality check in JS (e.g: x == ...)
+    let v = js_exec(scope, code);
+    // Cast to bool
+    equal = serde_v8::from_v8(scope, v).unwrap();
+  });
+
+  equal
+}
+
+macro_rules! sertest {
+  ($fn_name:ident, $rust:expr, $src:expr) => {
+    #[test]
+    fn $fn_name() {
+      assert!(
+        sercheck($rust, $src),
+        format!("Expected: {} where x={:?}", $src, $rust),
+      );
+    }
+  };
+}
+
+sertest!(ser_option_some, Some(true), "x === true");
+sertest!(ser_option_null, None as Option<bool>, "x === null");
+sertest!(ser_unit_null, (), "x === null");
+sertest!(ser_bool, true, "x === true");
+sertest!(ser_u64, 32, "x === 32");
+sertest!(ser_f64, 12345.0, "x === 12345.0");
+sertest!(ser_string, "Hello".to_owned(), "x === 'Hello'");
+sertest!(ser_vec_u64, vec![1, 2, 3, 4, 5], "arrEqual(x, [1,2,3,4,5])");
+sertest!(
+  ser_vec_string,
+  vec!["hello".to_owned(), "world".to_owned(),],
+  "arrEqual(x, ['hello', 'world'])"
+);
+sertest!(ser_tuple, (123, true, ()), "arrEqual(x, [123, true, null])");
+sertest!(
+  ser_mathop,
+  MathOp {
+    a: 1,
+    b: 3,
+    operator: None
+  },
+  "objEqual(x, {a: 1, b: 3, operator: null})"
+);
+
+use std::collections::BTreeMap;
+
+sertest!(
+  ser_map,
+  {
+    let map: BTreeMap<&str, u32> =
+      vec![("a", 1), ("b", 2), ("c", 3)].drain(..).collect();
+    map
+  },
+  "objEqual(x, {a: 1, b: 2, c: 3})"
+);