Basic tests for scalar array arith API calls

Author: 9prady9

tests/lib.rs tests/error_handler.rs

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+use ::arrayfire::*;
+
+#[allow(non_snake_case)]
+#[test]
+fn check_scalar_arith() {
+    let dims = Dim4::new(&[5, 5, 1, 1]);
+    let A = randu::<f32>(dims);
+    let s: f32 = 2.0;
+    let scalar_as_lhs = s * &A;
+    let scalar_as_rhs = &A * s;
+    let C = constant(s, dims);
+    let no_scalars = A * C;
+    let scalar_res_comp = eq(&scalar_as_lhs, &scalar_as_rhs, false);
+    let res_comp = eq(&scalar_as_lhs, &no_scalars, false);
+    let scalar_res = all_true_all(&scalar_res_comp);
+    let res = all_true_all(&res_comp);
+
+    assert_eq!(scalar_res.0, res.0);
+}