From ce823591d33a8b04a7cd44e2497e4c72d4d99aff Mon Sep 17 00:00:00 2001
From: Francis Russell <francis@unchartedbackwaters.co.uk>
Date: Mon, 7 Jan 2013 16:32:31 +0000
Subject: [PATCH] Initial work on supporting a test suite.

---
 ofc.cabal               |  7 +++++++
 tests/Main.hs           | 18 ++++++++++++++++++
 tests/Tests/Spectral.hs | 14 ++++++++++++++
 3 files changed, 39 insertions(+)
 create mode 100644 tests/Main.hs
 create mode 100644 tests/Tests/Spectral.hs

diff --git a/ofc.cabal b/ofc.cabal
index 9e91d80..23ca948 100644
--- a/ofc.cabal
+++ b/ofc.cabal
@@ -22,3 +22,10 @@ Executable ofc
   Hs-Source-Dirs:    src
   GHC-Options:       -Wall
   Build-Depends:     base, ofc 
+
+Test-Suite ofc-tests
+  Type:             exitcode-stdio-1.0
+  Hs-Source-Dirs:   tests
+  GHC-Options:      -Wall
+  Main-Is:          Main.hs
+  Build-Depends:    base, HUnit, ofc
diff --git a/tests/Main.hs b/tests/Main.hs
new file mode 100644
index 0000000..93aacfb
--- /dev/null
+++ b/tests/Main.hs
@@ -0,0 +1,18 @@
+module Main where
+
+import System.Exit (exitFailure, exitSuccess)
+import Test.HUnit
+
+import qualified Tests.Spectral (tests)
+
+main :: IO ()
+main = do
+  results <- runTestTT tests
+  if (errors results + failures results) > 0
+    then exitFailure
+    else exitSuccess
+
+tests :: Test
+tests = TestList 
+  [ TestLabel "Spectral" Tests.Spectral.tests
+  ]
diff --git a/tests/Tests/Spectral.hs b/tests/Tests/Spectral.hs
new file mode 100644
index 0000000..7d8c27c
--- /dev/null
+++ b/tests/Tests/Spectral.hs
@@ -0,0 +1,14 @@
+module Tests.Spectral (tests) where
+
+import Test.HUnit
+
+import OFC.Spectral
+
+tests :: Test
+tests = TestList 
+  [ TestCase negateNullBand
+  ]
+
+negateNullBand :: Assertion
+negateNullBand = (isNullBand $ negateBand nullBand) @? 
+  "Negating the null band produced a non-null band."
-- 
2.47.3