Add CPython test and register in CMakeLists

Author: Thirumalai-Shaktivel

.gitignore

@@ -89,6 +89,9 @@ inst/bin/*
 *_ldd.txt
 *_lines.dat.txt
 *__tmp__generated__.c
+a.c
+a.h
+a.py
 
 ### https://raw.github.com/github/gitignore/218a941be92679ce67d0484547e3e142b2f5f6f0/Global/macOS.gitignore
 

integration_tests/CMakeLists.txt

@@ -534,3 +534,6 @@ RUN(NAME callback_01       LABELS cpython llvm)
 RUN(NAME intrinsics_01     LABELS cpython llvm) # any
 
 COMPILE(NAME import_order_01     LABELS cpython llvm c) # any
+
+# Jit
+RUN(NAME test_jit_01       LABELS cpython)

integration_tests/test_jit_01.py

@@ -0,0 +1,16 @@
+from numpy import array
+from lpython import i32, f64, jit
+
+@jit
+def fast_sum(n: i32, x: f64[:]) -> f64:
+    s: f64 = 0.0
+    i: i32
+    for i in range(n):
+        s += x[i]
+    return s
+
+def test():
+    x: f64[3] = array([1.0, 2.0, 3.0])
+    assert fast_sum(3, x) == 6.0
+
+test()