Add test for hint FieldSqrt

cairo_programs/cairo-1-contracts/field_sqrt.cairo

@@ -0,0 +1,19 @@
+#[contract]
+mod FieldSqrt {
+    use core::traits::Into;
+    use option::OptionTrait;   
+    use ec::ec_point_from_x;
+    use ec::ec_point_non_zero;
+    use ec::ec_point_unwrap;
+
+    #[external]
+    fn field_sqrt() -> felt252 {
+        let p = ec_point_from_x(10).unwrap();
+        let p_nz = ec_point_non_zero(p);
+
+        let (qx, _) = ec_point_unwrap(p_nz);
+
+        assert(qx == 10, 'bad finalize x');
+        qx
+    }
+}

src/tests/cairo_1_run_from_entrypoint_tests.rs

@@ -512,3 +512,10 @@ fn widelmul128_test() {
         &[1_usize.into()],
     );
 }
+
+#[test]
+#[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
+fn field_sqrt_test() {
+    let program_data = include_bytes!("../../cairo_programs/cairo-1-contracts/field_sqrt.casm");
+    run_cairo_1_entrypoint(program_data.as_slice(), 0, &[], &[10.into()]);
+}