improve test coverage for isolation (#17297)

* improve test coverage for isolation

* a bit better

tests/stdlib/isolation.nim

@@ -1,16 +0,0 @@
-discard """
-  targets: "c cpp js"
-"""
-
-import std/[json, isolation]
-
-
-proc main() =
-  var x: seq[Isolated[JsonNode]]
-  x.add isolate(newJString("1234"))
-
-  doAssert $x == """@[(value: "1234")]"""
-
-
-static: main()
-main()

tests/stdlib/tisolation.nim

@@ -0,0 +1,115 @@
+discard """
+  targets: "c cpp"
+  matrix: "--gc:refc; --gc:orc"
+"""
+
+import std/[isolation, json]
+
+
+
+proc main() =
+  block: # string literals
+    var data = isolate("string")
+    doAssert data.extract == "string"
+    doAssert data.extract == ""
+
+  block: # string literals
+    var data = isolate("")
+    doAssert data.extract == ""
+    doAssert data.extract == ""
+
+  block:
+    var src = "string"
+    var data = isolate(move src)
+    doAssert data.extract == "string"
+    doAssert src.len == 0
+
+  block: # int literals
+    var data = isolate(1)
+    doAssert data.extract == 1
+    doAssert data.extract == 0
+
+  block: # float literals
+    var data = isolate(1.6)
+    doAssert data.extract == 1.6
+    doAssert data.extract == 0.0
+
+  block:
+    var data = isolate(@["1", "2"])
+    doAssert data.extract == @["1", "2"]
+    doAssert data.extract == @[]
+
+  block:
+    var data = isolate(@["1", "2", "3", "4", "5"])
+    doAssert data.extract == @["1", "2", "3", "4", "5"]
+    doAssert data.extract == @[]
+
+  block:
+    var data = isolate(@["", ""])
+    doAssert data.extract == @["", ""]
+    doAssert data.extract == @[]
+
+  block:
+    var src = @["1", "2"]
+    var data = isolate(move src)
+    doAssert data.extract == @["1", "2"]
+    doAssert src.len == 0
+
+  block:
+    var data = isolate(@[1, 2])
+    doAssert data.extract == @[1, 2]
+    doAssert data.extract == @[]
+
+  block:
+    var data = isolate(["1", "2"])
+    doAssert data.extract == ["1", "2"]
+    doAssert data.extract == ["", ""]
+
+  block:
+    var data = isolate([1, 2])
+    doAssert data.extract == [1, 2]
+    doAssert data.extract == [0, 0]
+
+  block:
+    type
+      Test = object
+        id: int
+
+    var data = isolate(Test(id: 12))
+    doAssert data.extract.id == 12
+
+  block:
+    type
+      Test = object
+        id: int
+
+    var src = Test(id: 12)
+    var data = isolate(src)
+    doAssert data.extract.id == 12
+
+  block:
+    type
+      Test = object
+        id: int
+
+    var src = Test(id: 12)
+    var data = isolate(move src)
+    doAssert data.extract.id == 12
+
+  block:
+    type
+      Test = ref object
+        id: int
+
+    var data = isolate(Test(id: 12))
+    doAssert data.extract.id == 12
+
+  block:
+    var x: seq[Isolated[JsonNode]]
+    x.add isolate(newJString("1234"))
+
+    doAssert $x == """@[(value: "1234")]"""
+
+
+static: main()
+main()