Added tester.

.gitignore

@@ -4,4 +4,5 @@
 nimcache/
 
 # Absolute paths
-/babel
+/src/babel
+/tests/tester

tests/tester.nim

@@ -0,0 +1,22 @@
+import osproc, unittest, strutils
+
+const path = "../src/babel"
+
+discard execCmdEx("nimrod c " & path)
+
+test "can install packagebin2":
+  let (outp, exitCode) = execCmdEx(path & " install -y https://github.com/babel-test/packagebin2.git")
+  check exitCode == QuitSuccess
+
+test "can reject same version dependencies":
+  let (outp, exitCode) = execCmdEx(path & " install -y https://github.com/babel-test/packagebin.git")
+  #echo outp
+  # TODO: outp is not in the correct order.
+  let ls = outp.splitLines()
+  check exitCode != QuitSuccess
+  check ls[ls.len-2] == "Error: unhandled exception: Cannot satisfy the dependency on PackageA 0.2.0 and PackageA 0.5.0 [EBabel]"
+  # Last is ""? TODO
+
+test "can update":
+  let (outp, exitCode) = execCmdEx(path & " update")
+  check exitCode == QuitSuccess