diff options
author | Benjamin Barenblat <bbaren@google.com> | 2018-09-21 16:40:18 -0400 |
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committer | Benjamin Barenblat <bbaren@google.com> | 2018-09-21 16:40:18 -0400 |
commit | a643f96bd1b8048a08277f7992ca7d43ee2423c3 (patch) | |
tree | 3f01075533614aab8a89c7cef4fba93f1ec0332f /tests/BTLS/TestUtilities.hs | |
parent | 021932a9ee2a81435b0a341030f68730dd9abd3b (diff) |
Rewrite tests for readability
Replace tables of tuples with simple function calls, and normalize
argument order to have outputs to the right of inputs. Also factor out
some common patterns.
Diffstat (limited to 'tests/BTLS/TestUtilities.hs')
-rw-r--r-- | tests/BTLS/TestUtilities.hs | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/tests/BTLS/TestUtilities.hs b/tests/BTLS/TestUtilities.hs new file mode 100644 index 0000000..01e57bb --- /dev/null +++ b/tests/BTLS/TestUtilities.hs @@ -0,0 +1,49 @@ +-- Copyright 2018 Google LLC +-- +-- Licensed under the Apache License, Version 2.0 (the "License"); you may not +-- use this file except in compliance with the License. You may obtain a copy of +-- the License at +-- +-- https://www.apache.org/licenses/LICENSE-2.0 +-- +-- Unless required by applicable law or agreed to in writing, software +-- distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +-- WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +-- License for the specific language governing permissions and limitations under +-- the License. + +{-# LANGUAGE OverloadedStrings #-} + +module BTLS.TestUtilities + ( abbreviate + , hex + ) where + +import qualified Data.ByteString.Base16 as Base16 +import qualified Data.ByteString.Base16.Lazy as L.Base16 +import Data.ByteString.Char8 (ByteString, unpack) +import qualified Data.ByteString.Lazy.Char8 as Lazy (ByteString) +import qualified Data.ByteString.Lazy.Char8 as L +import Data.Char (isAscii, isPrint) +import Data.Int (Int64) + +abbreviate :: Lazy.ByteString -> String +abbreviate input = + let maxLen = 22 in + if L.all isShowable (L.take (maxLen - 2) input) + then show (addEllipsisIfNecessary (maxLen - 2) input) + else L.unpack (addEllipsisIfNecessary maxLen (L.Base16.encode input)) + where isShowable c = isAscii c && isPrint c + +addEllipsisIfNecessary :: Int64 -> Lazy.ByteString -> Lazy.ByteString +addEllipsisIfNecessary maxLen s = + let ellipsis = "..." + ellipsisLen = L.length ellipsis + (x, y) = L.splitAt (maxLen - ellipsisLen) s in + x `L.append` if L.length y <= ellipsisLen then y else ellipsis + +hex :: ByteString -> ByteString +hex s = + case Base16.decode s of + (r, "") -> r + _ -> error $ "invalid hex string " ++ unpack s |