1 files changed, 125 insertions, 0 deletions
diff --git a/tests/system/tostring.nim b/tests/system/tostring.nim
new file mode 100644
index 000000000..bb6e453fb
--- /dev/null
+++ b/tests/system/tostring.nim
@@ -0,0 +1,125 @@
+doAssert "@[23, 45]" == $(@[23, 45])
+doAssert "[32, 45]" == $([32, 45])
+doAssert """@["", "foo", "bar"]""" == $(@["", "foo", "bar"])
+doAssert """["", "foo", "bar"]""" == $(["", "foo", "bar"])
+doAssert """["", "foo", "bar"]""" == $(@["", "foo", "bar"].toOpenArray(0, 2))
+
+# bug #2395
+let alphaSet: set[char] = {'a'..'c'}
+doAssert "{'a', 'b', 'c'}" == $alphaSet
+doAssert "2.3242" == $(2.3242)
+doAssert "2.982" == $(2.982)
+doAssert "123912.1" == $(123912.1)
+doAssert "123912.1823" == $(123912.1823)
+doAssert "5.0" == $(5.0)
+doAssert "1e+100" == $(1e100)
+doAssert "inf" == $(1e1000000)
+doAssert "-inf" == $(-1e1000000)
+doAssert "nan" == $(0.0/0.0)
+
+# nil tests
+# maybe a bit inconsistent in types
+var x: seq[string]
+doAssert "@[]" == $(x)
+
+var y: string
+doAssert "" == $(y)
+
+type
+  Foo = object
+    a: int
+    b: string
+
+var foo1: Foo
+
+# nil string should be an some point in time equal to the empty string
+doAssert(($foo1)[0..9] == "(a: 0, b: ")
+
+const
+  data = @['a','b', '\0', 'c','d']
+  dataStr = $data
+
+# ensure same result when on VM or when at program execution
+doAssert dataStr == $data
+
+import strutils
+# array test
+
+let arr = ['H','e','l','l','o',' ','W','o','r','l','d','!','\0']
+doAssert $arr == "['H', 'e', 'l', 'l', 'o', ' ', 'W', 'o', 'r', 'l', 'd', '!', '\\x00']"
+doAssert $cast[cstring](addr arr) == "Hello World!"
+
+proc takes(c: cstring) =
+  doAssert c == cstring""
+
+proc testm() =
+  var x: string
+  # nil is mapped to "":
+  takes(x)
+
+testm()
+
+# nil tests
+var xx: seq[string]
+var yy: string
+doAssert xx == @[]
+doAssert yy == ""
+
+proc bar(arg: cstring) =
+  doAssert arg[0] == '\0'
+
+proc baz(arg: openArray[char]) =
+  doAssert arg.len == 0
+
+proc stringCompare() =
+  var a,b,c,d,e,f,g: string
+  a.add 'a'
+  doAssert a == "a"
+  b.add "bee"
+  doAssert b == "bee"
+  b.add g
+  doAssert b == "bee"
+  c.addFloat 123.456
+  doAssert c == "123.456"
+  d.addInt 123456
+  doAssert d == "123456"
+
+  doAssert e == ""
+  doAssert "" == e
+  doAssert f == g
+  doAssert "" == ""
+
+  g.setLen(10)
+  doAssert g == "\0\0\0\0\0\0\0\0\0\0"
+  doAssert "" != "\0\0\0\0\0\0\0\0\0\0"
+
+  var nilstring: string
+  #bar(nilstring)
+  baz(nilstring)
+
+stringCompare()
+var nilstring: string
+bar(nilstring)
+
+static:
+  stringCompare()
+
+# issue #8847
+var a2: cstring = "fo\"o2"
+
+block:
+  var s: string
+  s.addQuoted a2
+  doAssert s == "\"fo\\\"o2\""
+
+# issue #16650
+template fn() =
+  doAssert len(cstring"ab\0c") == 5
+  doAssert len(cstring("ab\0c")) == 2
+  when nimvm:
+    discard
+  else:
+    let c = cstring("ab\0c")
+    doAssert len(c) == 2
+fn()
+static: fn()