Prepare for Nim v1.0.2

stew/io.nim

@@ -1,13 +1,14 @@
-proc writeFile*(filename: string, content: openarray[byte]) =
-  ## Opens a file named `filename` for writing. Then writes the
-  ## `content` completely to the file and closes the file afterwards.
-  ## Raises an IO exception in case of an error.
-  var f: File
-  if open(f, filename, fmWrite):
-    try:
-      f.writeBuffer(unsafeAddr content[0], content.len)
-    finally:
-      close(f)
-  else:
-    raise newException(IOError, "cannot open: " & filename)
+when not compiles(writeFile("filename", @[byte(1)])):
+  proc writeFile*(filename: string, content: openarray[byte]) =
+    ## Opens a file named `filename` for writing. Then writes the
+    ## `content` completely to the file and closes the file afterwards.
+    ## Raises an IO exception in case of an error.
+    var f: File
+    if open(f, filename, fmWrite):
+      try:
+        f.writeBuffer(unsafeAddr content[0], content.len)
+      finally:
+        close(f)
+    else:
+      raise newException(IOError, "cannot open: " & filename)
 

tests/test_byteutils.nim

@@ -6,7 +6,11 @@
 # at your option. This file may not be copied, modified, or distributed except according to those terms.
 
 import  unittest,
-        ../stew/byteutils
+        ../stew/[byteutils, io]
+
+proc compilationTest {.exportc: "compilationTest".} =
+  var bytes = @[1.byte, 2, 3, 4]
+  writeFile("test", bytes)
 
 suite "Byte utils":
   let simpleBArray = [0x12.byte, 0x34, 0x56, 0x78]