TEST: Add test for lpconvexhull pkg

Author: Shaikh-Ubaid

integration_tests/CMakeLists.txt

@@ -529,6 +529,7 @@ RUN(NAME test_package_01     LABELS cpython llvm)
 RUN(NAME test_pkg_lpdraw     LABELS cpython llvm wasm)
 RUN(NAME test_pkg_lnn_01        LABELS cpython llvm)
 RUN(NAME test_pkg_lnn_02        LABELS cpython llvm)
+RUN(NAME test_pkg_lpconvexhull  LABELS cpython c)
 
 RUN(NAME generics_01         LABELS cpython llvm c)
 RUN(NAME generics_02         LABELS cpython llvm c)

integration_tests/test_pkg_lpconvexhull.py

@@ -0,0 +1,32 @@
+from lpython import Const, i32, f64
+
+from lpdraw import Line, Circle, Clear, Display
+from lpconvexhull import convex_hull
+from numpy import empty, int32
+
+def plot_graph(polygon: list[tuple[i32, i32]], points: list[tuple[i32, i32]]):
+    Width: Const[i32] = 500 # x-axis limits [0, 499]
+    Height: Const[i32] = 500 # y-axis limits [0, 499]
+    Screen: i32[Height, Width] = empty((Height, Width), dtype=int32)
+    Clear(Height, Width, Screen)
+
+    i: i32
+    n: i32 = len(polygon)
+    for i in range(n):
+        Line(Height, Width, Screen, polygon[i][0], polygon[i][1], polygon[(i + 1) % n][0], polygon[(i + 1) % n][1])
+
+    point_size: i32 = 5
+    for i in range(len(points)):
+        Circle(Height, Width, Screen, points[i][0], points[i][1], f64(point_size))
+
+    Display(Height, Width, Screen)
+
+def main0():
+    points: list[tuple[i32, i32]] = [(445, 193), (138, 28), (418, 279), (62, 438), (168, 345), (435, 325), (293, 440), (158, 94), (403, 288), (136, 278), (141, 243), (287, 313), (338, 492), (172, 78), (29, 404), (79, 377), (184, 91), (69, 324), (408, 72), (494, 1)]
+    convex_hull_points: list[tuple[i32, i32]] = convex_hull(points)
+    # print(convex_hull_points)
+    plot_graph(convex_hull_points, points)
+
+    assert convex_hull_points == [(29, 404), (138, 28), (494, 1), (435, 325), (338, 492), (62, 438)]
+
+main0()