1 files changed, 62 insertions, 0 deletions
diff --git a/library/portable-simd/crates/core_simd/tests/swizzle.rs b/library/portable-simd/crates/core_simd/tests/swizzle.rs
new file mode 100644
index 000000000..51c63611a
--- /dev/null
+++ b/library/portable-simd/crates/core_simd/tests/swizzle.rs
@@ -0,0 +1,62 @@
+#![feature(portable_simd)]
+use core_simd::{Simd, Swizzle};
+
+#[cfg(target_arch = "wasm32")]
+use wasm_bindgen_test::*;
+
+#[cfg(target_arch = "wasm32")]
+wasm_bindgen_test_configure!(run_in_browser);
+
+#[test]
+#[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
+fn swizzle() {
+    struct Index;
+    impl Swizzle<4, 4> for Index {
+        const INDEX: [usize; 4] = [2, 1, 3, 0];
+    }
+    impl Swizzle<4, 2> for Index {
+        const INDEX: [usize; 2] = [1, 1];
+    }
+
+    let vector = Simd::from_array([2, 4, 1, 9]);
+    assert_eq!(Index::swizzle(vector).to_array(), [1, 4, 9, 2]);
+    assert_eq!(Index::swizzle(vector).to_array(), [4, 4]);
+}
+
+#[test]
+#[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
+fn reverse() {
+    let a = Simd::from_array([1, 2, 3, 4]);
+    assert_eq!(a.reverse().to_array(), [4, 3, 2, 1]);
+}
+
+#[test]
+#[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
+fn rotate() {
+    let a = Simd::from_array([1, 2, 3, 4]);
+    assert_eq!(a.rotate_lanes_left::<0>().to_array(), [1, 2, 3, 4]);
+    assert_eq!(a.rotate_lanes_left::<1>().to_array(), [2, 3, 4, 1]);
+    assert_eq!(a.rotate_lanes_left::<2>().to_array(), [3, 4, 1, 2]);
+    assert_eq!(a.rotate_lanes_left::<3>().to_array(), [4, 1, 2, 3]);
+    assert_eq!(a.rotate_lanes_left::<4>().to_array(), [1, 2, 3, 4]);
+    assert_eq!(a.rotate_lanes_left::<5>().to_array(), [2, 3, 4, 1]);
+    assert_eq!(a.rotate_lanes_right::<0>().to_array(), [1, 2, 3, 4]);
+    assert_eq!(a.rotate_lanes_right::<1>().to_array(), [4, 1, 2, 3]);
+    assert_eq!(a.rotate_lanes_right::<2>().to_array(), [3, 4, 1, 2]);
+    assert_eq!(a.rotate_lanes_right::<3>().to_array(), [2, 3, 4, 1]);
+    assert_eq!(a.rotate_lanes_right::<4>().to_array(), [1, 2, 3, 4]);
+    assert_eq!(a.rotate_lanes_right::<5>().to_array(), [4, 1, 2, 3]);
+}
+
+#[test]
+#[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
+fn interleave() {
+    let a = Simd::from_array([0, 1, 2, 3, 4, 5, 6, 7]);
+    let b = Simd::from_array([8, 9, 10, 11, 12, 13, 14, 15]);
+    let (lo, hi) = a.interleave(b);
+    assert_eq!(lo.to_array(), [0, 8, 1, 9, 2, 10, 3, 11]);
+    assert_eq!(hi.to_array(), [4, 12, 5, 13, 6, 14, 7, 15]);
+    let (even, odd) = lo.deinterleave(hi);
+    assert_eq!(even, a);
+    assert_eq!(odd, b);
+}