1 files changed, 80 insertions, 0 deletions
diff --git a/tests/js/tcopying.nim b/tests/js/tcopying.nim
new file mode 100644
index 000000000..306d25090
--- /dev/null
+++ b/tests/js/tcopying.nim
@@ -0,0 +1,80 @@
+discard """
+  output: '''123
+2 9
+2 9
+1 124
+true false
+100 300 100
+1
+1
+'''
+"""
+
+type MyArray = array[1, int]
+
+proc changeArray(a: var MyArray) =
+    a = [123]
+
+var a: MyArray
+changeArray(a)
+echo a[0]
+
+# bug #4703
+# Test 1
+block:
+    let ary1 = [1, 2, 3]
+    var ary2 = ary1
+
+    ary2[1] = 9
+
+    echo ary1[1], " ", ary2[1]
+
+# Test 2
+block:
+    type TestObj = ref object of RootObj
+        ary2: array[3, int]
+
+    let ary1 = [1, 2, 3]
+    var obj = TestObj(ary2: ary1)
+
+    obj.ary2[1] = 9
+
+    echo ary1[1], " ", obj.ary2[1]
+
+block:
+    type TestObj = object
+        x, y: int
+
+    let obj = TestObj(x: 1, y: 2)
+    var s = @[obj]
+    s[0].x += 123
+    echo obj.x, " ", s[0].x
+
+block:
+    var nums = {1, 2, 3, 4}
+    let obj = (n: nums)
+    nums.incl 5
+    echo (5 in nums), " ", (5 in obj.n)
+
+block:
+    let tup1 = (a: 100)
+    var tup2 = (t: (t2: tup1))
+    var tup3 = tup1
+    tup2.t.t2.a = 300
+    echo tup1.a, " ", tup2.t.t2.a, " ", tup3.a
+
+block:
+    proc foo(arr: array[2, int]) =
+        var s = @arr
+        s[0] = 500
+
+    var nums = [1, 2]
+    foo(nums)
+    echo nums[0]
+
+proc bug9674 =
+  var b = @[1,2,3]
+  var a = move(b)
+  echo a[0]
+
+bug9674()