Make it easy to test code

testexamples.nim

@@ -0,0 +1,40 @@
+import md5, re, os, strutils, osproc
+
+let
+  markdownFilesGlob = getCurrentDir() / "content" / "*.md"
+  configFilePath = getCurrentDir() / "validcodehashes.txt"
+
+for filePath in walkFiles(markdownFilesGlob):
+  let file = open(filePath, fmRead)
+  let fileContents = file.readAll()
+  file.close()
+
+  let sourceSegments = fileContents.findAll(re"""(?i)```\s*nimrod[\s\S]*?```""")
+  for match in sourceSegments:
+    let code = match.replacef(re"""(?i)```\s*nimrod[ \t]*\s([\s\S]*?)```""", "$1")
+    let codeHash = code.getMD5()
+    if not configFilePath.readFile().contains(codeHash):  # Hasn't been verified yet
+      let tempCodePath = getTempDir() / "code.nim"
+      tempCodePath.writeFile(code)
+      let (output, exitCode) = execCmdEx("nimrod c -r --verbosity:0 " & tempCodePath)
+
+      var printableCode = ""
+      for line in code.splitLines():
+        printableCode.add("    " & line & "\n")
+      
+      var printableOutput = ""
+      if output != nil:
+        for line in output.splitLines():
+          printableOutput.add("> " & line & "\n")
+
+      echo filePath
+      stdout.write(printableCode & printableOutput)
+
+      stdout.write("Everything ok? (y/n) ")
+      case stdin.readLine.toLower:
+        of "y":
+          configFilePath.writeFile(configFilePath.readFile() & "\n" & codeHash)
+        of "n":
+          discard
+
+      echo "===================="