4 files changed, 65 insertions, 1 deletions
diff --git a/tests/stdlib/tmemfiles1.nim b/tests/stdlib/tmemfiles1.nim
new file mode 100644
index 000000000..8b66dfcc1
--- /dev/null
+++ b/tests/stdlib/tmemfiles1.nim
@@ -0,0 +1,12 @@
+discard """
+  file: "tmemfiles1.nim"
+"""
+import memfiles, os
+var
+  mm: MemFile
+  fn = "test.mmap"
+# Create a new file
+mm = memfiles.open(fn, mode = fmReadWrite, newFileSize = 20)
+mm.close()
+mm.close()
+if fileExists(fn): removeFile(fn)
diff --git a/tests/stdlib/tmemfiles2.nim b/tests/stdlib/tmemfiles2.nim
new file mode 100644
index 000000000..026443e93
--- /dev/null
+++ b/tests/stdlib/tmemfiles2.nim
@@ -0,0 +1,39 @@
+discard """
+  file: "tmemfiles2.nim"
+  disabled: true
+  output: '''Full read size: 20
+Half read size: 10 Data: Hello'''
+"""
+# doesn't work on windows. fmReadWrite doesn't create a file.
+import memfiles, os
+var
+  mm, mm_full, mm_half: MemFile
+  fn = "test.mmap"
+  p: pointer
+
+if fileExists(fn): removeFile(fn)
+
+# Create a new file, data all zeros
+mm = memfiles.open(fn, mode = fmReadWrite, newFileSize = 20)
+mm.close()
+
+# read, change
+mm_full = memfiles.open(fn, mode = fmWrite, mappedSize = -1)
+echo "Full read size: ",mm_full.size
+p = mm_full.mapMem(fmReadWrite, 20, 0)
+var p2 = cast[cstring](p)
+p2[0] = 'H'
+p2[1] = 'e'
+p2[2] = 'l'
+p2[3] = 'l'
+p2[4] = 'o'
+p2[5] = '\0'
+mm_full.unmapMem(p, 20)
+mm_full.close()
+
+# read half, and verify data change
+mm_half = memfiles.open(fn, mode = fmRead, mappedSize = 10)
+echo "Half read size: ",mm_half.size, " Data: ", cast[cstring](mm_half.mem)
+mm_half.close()
+
+if fileExists(fn): removeFile(fn)
diff --git a/tests/stdlib/tstreams2.nim b/tests/stdlib/tstreams2.nim
new file mode 100644
index 000000000..90102d8e3
--- /dev/null
+++ b/tests/stdlib/tstreams2.nim
@@ -0,0 +1,13 @@
+discard """
+  file: "tstreams2.nim"
+  output: '''fs is: nil'''
+"""
+import streams
+var
+  fs = newFileStream("amissingfile.txt")
+  line = ""
+echo "fs is: ",repr(fs)
+if not isNil(fs):
+  while fs.readLine(line):
+    echo line
+  fs.close()
diff --git a/tests/stdlib/tunittest.nim b/tests/stdlib/tunittest.nim
index 4d2a2a340..4b210c23b 100644
--- a/tests/stdlib/tunittest.nim
+++ b/tests/stdlib/tunittest.nim
@@ -1,4 +1,4 @@
-import unittest
+import unittest, sequtils
 
 
 proc doThings(spuds: var int): int =