1 files changed, 84 insertions, 0 deletions
diff --git a/vendor/js-sys/tests/wasm/DataView.rs b/vendor/js-sys/tests/wasm/DataView.rs
new file mode 100644
index 000000000..7747019a5
--- /dev/null
+++ b/vendor/js-sys/tests/wasm/DataView.rs
@@ -0,0 +1,84 @@
+use js_sys::*;
+use wasm_bindgen::JsCast;
+use wasm_bindgen::JsValue;
+use wasm_bindgen_test::*;
+
+#[wasm_bindgen_test]
+fn test() {
+    let bytes = Int8Array::new(&JsValue::from(10));
+
+    // TODO: figure out how to do `bytes[2] = 2`
+    bytes.subarray(2, 3).fill(2, 0, 1);
+
+    let v = DataView::new(&bytes.buffer(), 2, 8);
+    assert_eq!(v.byte_offset(), 2);
+    assert_eq!(v.byte_length(), 8);
+    assert_eq!(v.get_int8(0), 2);
+    assert_eq!(v.get_uint8(0), 2);
+
+    v.set_int8(0, 42);
+    assert_eq!(v.get_int8(0), 42);
+    v.set_uint8(0, 255);
+    assert_eq!(v.get_uint8(0), 255);
+
+    v.set_int16(0, 32767);
+    assert_eq!(v.get_int16(0), 32767);
+    v.set_int16_endian(0, 0x1122, true);
+    assert_eq!(v.get_int16_endian(0, true), 0x1122);
+    assert_eq!(v.get_int16_endian(0, false), 0x2211);
+    v.set_uint16(0, 65535);
+    assert_eq!(v.get_uint16(0), 65535);
+    v.set_uint16_endian(0, 0x1122, true);
+    assert_eq!(v.get_uint16_endian(0, true), 0x1122);
+    assert_eq!(v.get_uint16_endian(0, false), 0x2211);
+
+    v.set_int32(0, 123456789);
+    assert_eq!(v.get_int32(0), 123456789);
+    v.set_int32_endian(0, 0x11223344, true);
+    assert_eq!(v.get_int32_endian(0, true), 0x11223344);
+    assert_eq!(v.get_int32_endian(0, false), 0x44332211);
+    v.set_uint32(0, 3_123_456_789);
+    assert_eq!(v.get_uint32(0), 3_123_456_789);
+    v.set_uint32_endian(0, 0x11223344, true);
+    assert_eq!(v.get_uint32_endian(0, true), 0x11223344);
+    assert_eq!(v.get_uint32_endian(0, false), 0x44332211);
+
+    v.set_float32(0, 100.123);
+    assert_eq!(v.get_float32(0), 100.123);
+    v.set_float32_endian(0, f32::from_bits(0x11223344), true);
+    assert_eq!(v.get_float32_endian(0, true), f32::from_bits(0x11223344));
+    assert_eq!(v.get_float32_endian(0, false), f32::from_bits(0x44332211));
+
+    v.set_float64(0, 123456789.123456);
+    assert_eq!(v.get_float64(0), 123456789.123456);
+    v.set_float64_endian(0, f64::from_bits(0x1122334411223344), true);
+    assert_eq!(
+        v.get_float64_endian(0, true),
+        f64::from_bits(0x1122334411223344)
+    );
+    assert_eq!(
+        v.get_float64_endian(0, false),
+        f64::from_bits(0x4433221144332211)
+    );
+
+    v.set_int8(0, 42);
+
+    // TODO: figure out how to do `bytes[2]`
+    bytes
+        .subarray(2, 3)
+        .for_each(&mut |x, _, _| assert_eq!(x, 42));
+}
+
+#[wasm_bindgen_test]
+fn dataview_inheritance() {
+    let bytes = Int8Array::new(&JsValue::from(10));
+
+    // TODO: figure out how to do `bytes[2] = 2`
+    bytes.subarray(2, 3).fill(2, 0, 1);
+
+    let v = DataView::new(&bytes.buffer(), 2, 8);
+
+    assert!(v.is_instance_of::<DataView>());
+    assert!(v.is_instance_of::<Object>());
+    let _: &Object = v.as_ref();
+}