add a test for abs with complex

Author: Smit-create

integration_tests/test_complex.py

@@ -13,4 +13,16 @@ def test_real_imag():
     # TODO: below test should work
     # assert abs(b - 3) < eps
 
+def test_complex_abs():
+    x: c32
+    x = complex(3, 4)
+    eps: f64
+    eps = 1e-12
+    assert abs(abs(x) - 5.0) < eps
+    y: c64
+    y = complex(6, 8)
+    assert abs(abs(y) - 10.0) < eps
+
+
 test_real_imag()
+test_complex_abs()