TEST: Add test for array of structs

Author: ubaidsk

integration_tests/CMakeLists.txt

@@ -477,6 +477,7 @@ RUN(NAME structs_19          LABELS cpython llvm c
 RUN(NAME structs_20          LABELS cpython llvm c
     EXTRAFILES structs_20b.c)
 RUN(NAME structs_21          LABELS cpython llvm c)
+RUN(NAME structs_22          LABELS cpython llvm c)
 RUN(NAME sizeof_01           LABELS llvm c
         EXTRAFILES sizeof_01b.c)
 RUN(NAME sizeof_02           LABELS cpython llvm c)

integration_tests/structs_22.py

@@ -0,0 +1,43 @@
+from lpython import dataclass, i32, f64, u64
+from numpy import array
+
+@dataclass
+class Foo:
+    x: i32
+    y: i32
+
+@dataclass
+class Foo2:
+    p: f64
+    q: i32
+    r: u64
+
+def main0() -> None:
+    foos: Foo[2] = array([Foo(1, 2), Foo(3, 4)])
+    print(foos[0].x, foos[0].y, foos[1].x, foos[1].y)
+
+    assert foos[0].x == 1
+    assert foos[0].y == 2
+    assert foos[1].x == 3
+    assert foos[1].y == 4
+
+def main1() -> None:
+    foos2: Foo2[3] = array([Foo2(-2.3, 42, u64(3)), Foo2(45.5, -3, u64(10001)), Foo2(1.0, -101, u64(100))])
+    i: i32
+    for i in range(3):
+        print(foos2[i].p, foos2[i].q, foos2[i].r)
+
+    eps: f64
+    eps = 1e-12
+    assert abs(foos2[0].p - (-2.3)) <= eps
+    assert foos2[0].q == 42
+    assert foos2[0].r == u64(3)
+    assert abs(foos2[1].p - (45.5)) <= eps
+    assert foos2[1].q == -3
+    assert foos2[1].r == u64(10001)
+    assert abs(foos2[2].p - (1.0)) <= eps
+    assert foos2[2].q == -101
+    assert foos2[2].r == u64(100)
+
+main0()
+main1()