adding some failing caas tests

tests/caas/compile-then-def.txt

@@ -0,0 +1,9 @@
+main.nim
+> c
+SuccessX
+> idetools --track:main.nim,5,18 --def main.nim
+strutils.toUpper
+SuccessX
+> idetools --track:main.nim,5,18 --def main.nim
+strutils.toUpper
+SuccessX

tests/caas/def-then-compile.txt

@@ -0,0 +1,7 @@
+main.nim
+> idetools --track:main.nim,5,18 --def main.nim
+strutils.toUpper
+SuccessX
+> c
+SuccessX
+

tests/caasdriver.nim

@@ -6,8 +6,8 @@ type
 
 proc dirname(path: string): string = path.splitPath()[0]
 
-const
+var
-  TesterDir = CurrentSourcePath.dirname
+  TesterDir = getAppDir()
   NimrodBin = TesterDir / "../bin/nimrod"
 
 proc startNimrodSession*(project: string): TNimrodSession =
@@ -26,6 +26,9 @@ proc doCommand*(session: var TNimrodSession, command: string): string =
     if session.nim.outputStream.readLine(line):
       if line.string == "": break
       result.add(line.string & "\n")
+    else:
+      result = "FAILED TO EXECUTE: " & command & "\n" & result
+      break
 
 proc close(session: var TNimrodSession) {.destructor.} =
   session.nim.close