test(ForAndLoopTest): 去除 fakeduck 依赖,list 改用 list[T](bd)+append 构造

移除 str.split/__mbuddy__ 魔法字段扩展依赖,zip/enumerate 输入改为
list[str](bd)+append 构造;保留纯 TPV 内置迭代测试(range/str/zip/enumerate)

Test/ForAndLoopTest/App/main.vp

@@ -5,7 +5,6 @@ import stdlib
 import string
 import memhub
 import testcheck
-import _fakeduck
 
 
 def test_for_in_range():
@@ -28,9 +27,11 @@ def test_for_in_list():
     testcheck.section("Test 3: for v in list[str]")
     arena: bytes = stdlib.malloc(65536)
     bd: memhub.MemBuddy | t.CPtr = memhub.MemBuddy(arena, 65536)
-    src: str = "x,y,z,w"
-    src.__mbuddy__ = bd
-    lst: list[str] = src.split(',')
+    lst: list[str] = list[str](bd)
+    lst.append("x")
+    lst.append("y")
+    lst.append("z")
+    lst.append("w")
     total: t.CInt = 0
     for v in lst:
         total += 1
@@ -42,12 +43,14 @@ def test_zip_list_list():
     testcheck.section("Test 4: zip(list, list)")
     arena: bytes = stdlib.malloc(65536)
     bd: memhub.MemBuddy | t.CPtr = memhub.MemBuddy(arena, 65536)
-    a: str = "a,b,c"
-    a.__mbuddy__ = bd
-    b: str = "1,2,3"
-    b.__mbuddy__ = bd
-    la: list[str] = a.split(',')
-    lb: list[str] = b.split(',')
+    la: list[str] = list[str](bd)
+    la.append("a")
+    la.append("b")
+    la.append("c")
+    lb: list[str] = list[str](bd)
+    lb.append("1")
+    lb.append("2")
+    lb.append("3")
     cnt: t.CInt = 0
     for ca, cb in zip(la, lb):
         stdio.printf("zip[%d]: '%s'='%s'\n", cnt, ca, cb)
@@ -60,9 +63,10 @@ def test_zip_range_list():
     testcheck.section("Test 5: zip(range, list)")
     arena: bytes = stdlib.malloc(65536)
     bd: memhub.MemBuddy | t.CPtr = memhub.MemBuddy(arena, 65536)
-    s: str = "p,q,r"
-    s.__mbuddy__ = bd
-    lst: list[str] = s.split(',')
+    lst: list[str] = list[str](bd)
+    lst.append("p")
+    lst.append("q")
+    lst.append("r")
     cnt: t.CInt = 0
     for n, v in zip(range(3), lst):
         stdio.printf("zip range+list[%d]: %d='%s'\n", cnt, n, v)
@@ -86,9 +90,10 @@ def test_zip_range_len_list():
     testcheck.section("Test 7: zip(range(len), list)")
     arena: bytes = stdlib.malloc(65536)
     bd: memhub.MemBuddy | t.CPtr = memhub.MemBuddy(arena, 65536)
-    s: str = "www.gvsds.com"
-    s.__mbuddy__ = bd
-    lst: list[str] = s.split('.')
+    lst: list[str] = list[str](bd)
+    lst.append("www")
+    lst.append("gvsds")
+    lst.append("com")
     cnt: t.CInt = 0
     for idx, v in zip(range(len(lst)), lst):
         stdio.printf("lst[%d]='%s'\n", idx, v)
@@ -101,9 +106,10 @@ def test_enumerate_list():
     testcheck.section("Test 8: enumerate(list)")
     arena: bytes = stdlib.malloc(65536)
     bd: memhub.MemBuddy | t.CPtr = memhub.MemBuddy(arena, 65536)
-    s: str = "alpha,beta,gamma"
-    s.__mbuddy__ = bd
-    lst: list[str] = s.split(',')
+    lst: list[str] = list[str](bd)
+    lst.append("alpha")
+    lst.append("beta")
+    lst.append("gamma")
     cnt: t.CInt = 0
     last_idx: t.CInt = -1
     for idx, v in enumerate(lst):