TEST: Add for dataclass field()

Author: ubaidsk

integration_tests/CMakeLists.txt

@@ -685,6 +685,7 @@ RUN(NAME structs_31          LABELS cpython llvm c)
 RUN(NAME structs_32          LABELS cpython llvm c)
 RUN(NAME structs_33          LABELS cpython llvm c)
 RUN(NAME structs_34          LABELS cpython llvm c)
+RUN(NAME structs_35          LABELS cpython llvm c)
 
 RUN(NAME symbolics_01        LABELS cpython_sym c_sym llvm_sym NOFAST)
 RUN(NAME symbolics_02        LABELS cpython_sym c_sym llvm_sym NOFAST)

integration_tests/structs_35.py

@@ -0,0 +1,26 @@
+from lpython import dataclass, field, i32
+from numpy import array
+
+@dataclass
+class X:
+    a: i32 = 123
+    b: bool = True
+    c: list[i32] = field(default_factory=lambda: [1, 2, 3])
+    d: i32[3] = field(default_factory=lambda: array([4, 5, 6]))
+    e: i32 = field(default=-5)
+
+def main0():
+    x: X = X()
+    print(x)
+    assert x.a == 123
+    assert x.b == True
+    assert x.c[0] == 1
+    assert x.d[1] == 5
+    assert x.e == -5
+    x.c[0] = 3
+    x.d[0] = 3
+    print(x)
+    assert x.c[0] == 3
+    assert x.d[0] == 3
+
+main0()