TEST: Add test for @ pythoncall()

Author: ubaidsk

integration_tests/CMakeLists.txt

@@ -476,6 +476,7 @@ RUN(NAME bindc_05   LABELS llvm c
         EXTRAFILES bindc_05b.c)
 RUN(NAME bindc_06   LABELS llvm c
         EXTRAFILES bindc_06b.c)
+RUN(NAME bindpy_01           LABELS c ENABLE_CPYTHON EXTRAFILES bindpy_01_module.py)
 RUN(NAME test_generics_01    LABELS cpython llvm c)
 RUN(NAME test_cmath          LABELS cpython llvm c)
 RUN(NAME test_complex_01        LABELS cpython llvm c wasm wasm_x64)

integration_tests/bindpy_01.py

@@ -0,0 +1,77 @@
+from lpython import i32, i64, u32, u64, f32, f64, pythoncall
+
+@pythoncall(module = "bindpy_01_module")
+def add_ints(a: i32, b: i64, c: u32, d: u64) -> i64:
+    pass
+
+@pythoncall(module = "bindpy_01_module")
+def multiply_ints(a: i32, b: i64, c: u32, d: u64) -> i64:
+    pass
+
+@pythoncall(module = "bindpy_01_module")
+def add_floats(a: f32, b: f64) -> f64:
+    pass
+
+@pythoncall(module = "bindpy_01_module")
+def multiply_floats(a: f32, b: f64) -> f64:
+    pass
+
+@pythoncall(module = "bindpy_01_module")
+def get_hello_world(a: str, b: str) -> str:
+    pass
+
+@pythoncall(module = "bindpy_01_module")
+def str_n_times(a: str, n: i32) -> str:
+    pass
+
+@pythoncall(module = "bindpy_01_module")
+def get_cpython_version() -> str:
+    pass
+
+# Integers:
+def test_ints():
+    i: i32
+    j: i64
+    k: u32
+    l: u64
+    i = -5
+    j = i64(24)
+    k = u32(20)
+    l = u64(92)
+
+    assert add_ints(i, j, k, l) == i64(131)
+    assert multiply_ints(i, j, k, l) == i64(-220800)
+
+# Floats
+def test_floats():
+    a: f32
+    b: f64
+    a = f32(3.14)
+    b = -100.00
+
+    assert abs(add_floats(a, b) - (-96.86)) <= 1e-4
+    assert abs(multiply_floats(a, b) - (-314.0)) <= 1e-4
+
+# Strings
+def test_strings():
+    a: str
+    b: str
+    c: str
+    i: i32
+    a = "hello"
+    b = "world"
+    i = 3
+
+    assert get_hello_world(a, b) == "hello world!"
+    assert str_n_times(a, i) == "hellohellohello"
+    assert get_hello_world(str_n_times(a, i), b) == "hellohellohello world!"
+
+def main0():
+    print("CPython version: ", get_cpython_version())
+
+    test_ints()
+    test_floats()
+    test_strings()
+
+
+main0()

integration_tests/bindpy_01_module.py

@@ -0,0 +1,23 @@
+def get_cpython_version():
+    import platform
+    return platform.python_version()
+
+def add_ints(a, b, c, d):
+    e = a + b + c + d
+    return e
+
+def multiply_ints(a, b, c, d):
+    e = a * b * c * d
+    return e
+
+def add_floats(a, b):
+    return a + b
+
+def multiply_floats(a, b):
+    return a * b
+
+def get_hello_world(a, b):
+    return f"{a} {b}!"
+
+def str_n_times(a, n):
+    return a * n