diff --git a/brittany.cabal b/brittany.cabal
index ffd8d42..ee0035b 100644
--- a/brittany.cabal
+++ b/brittany.cabal
@@ -72,6 +72,7 @@ common library
     -Wno-missing-safe-haskell-mode
     -Wno-monomorphism-restriction
     -Wno-prepositive-qualified-module
+    -Wno-safe
     -Wno-unsafe
 
 common executable
@@ -134,8 +135,6 @@ test-suite unittests
   build-depends:
     , hspec ^>= 2.8.3
   main-is:          TestMain.hs
-  other-modules:    TestUtils
-                    AsymptoticPerfTests
   hs-source-dirs:   src-unittests
 
 test-suite littests
diff --git a/src-unittests/AsymptoticPerfTests.hs b/src-unittests/AsymptoticPerfTests.hs
deleted file mode 100644
index 702ab90..0000000
--- a/src-unittests/AsymptoticPerfTests.hs
+++ /dev/null
@@ -1,37 +0,0 @@
-{-# LANGUAGE ScopedTypeVariables #-}
-
-module AsymptoticPerfTests where
-
-
-
-import Language.Haskell.Brittany.Internal.PreludeUtils
-import qualified Data.Text as Text
-
-import Test.Hspec
-
-import TestUtils
-
-
-
-asymptoticPerfTest :: Spec
-asymptoticPerfTest = do
-  it "10 do statements"
-    $  roundTripEqualWithTimeout 1500000
-    $  (Text.pack "func = do\n")
-    <> Text.replicate 10 (Text.pack "  statement\n")
-  it "10 do nestings"
-    $  roundTripEqualWithTimeout 4000000
-    $  (Text.pack "func = ")
-    <> mconcat
-         (   [1 .. 10]
-         <&> \(i :: Int) ->
-               (Text.replicate (2 * i) (Text.pack " ") <> Text.pack "do\n")
-         )
-    <> Text.replicate 2000 (Text.pack " ")
-    <> Text.pack "return\n"
-    <> Text.replicate 2002 (Text.pack " ")
-    <> Text.pack "()"
-  it "10 AppOps"
-    $  roundTripEqualWithTimeout 1000000
-    $  (Text.pack "func = expr")
-    <> Text.replicate 10 (Text.pack "\n     . expr") --TODO
diff --git a/src-unittests/TestMain.hs b/src-unittests/TestMain.hs
index 2f0f894..33af44b 100644
--- a/src-unittests/TestMain.hs
+++ b/src-unittests/TestMain.hs
@@ -1,6 +1,103 @@
+{-# LANGUAGE ScopedTypeVariables #-}
+
 import Test.Hspec
 
-import AsymptoticPerfTests
+import Language.Haskell.Brittany.Internal.Prelude
+import qualified Data.Maybe
+import qualified Data.Semigroup as Semigroup
+import qualified Data.Text as Text
+
+import Language.Haskell.Brittany.Internal
+
+import Language.Haskell.Brittany.Internal.Config.Types
+import Language.Haskell.Brittany.Internal.Config
+
+import System.Timeout ( timeout )
+
+import Data.Coerce ( coerce )
+
+
+
+import Language.Haskell.Brittany.Internal.PreludeUtils
+
+
+
+asymptoticPerfTest :: Spec
+asymptoticPerfTest = do
+  it "10 do statements"
+    $  roundTripEqualWithTimeout 1500000
+    $  (Text.pack "func = do\n")
+    <> Text.replicate 10 (Text.pack "  statement\n")
+  it "10 do nestings"
+    $  roundTripEqualWithTimeout 4000000
+    $  (Text.pack "func = ")
+    <> mconcat
+         (   [1 .. 10]
+         <&> \(i :: Int) ->
+               (Text.replicate (2 * i) (Text.pack " ") <> Text.pack "do\n")
+         )
+    <> Text.replicate 2000 (Text.pack " ")
+    <> Text.pack "return\n"
+    <> Text.replicate 2002 (Text.pack " ")
+    <> Text.pack "()"
+  it "10 AppOps"
+    $  roundTripEqualWithTimeout 1000000
+    $  (Text.pack "func = expr")
+    <> Text.replicate 10 (Text.pack "\n     . expr") --TODO
+
+
+
+roundTripEqual :: Text -> Expectation
+roundTripEqual t =
+  fmap (fmap PPTextWrapper)
+       (parsePrintModuleTests defaultTestConfig "TestFakeFileName.hs" t)
+    `shouldReturn` Right (PPTextWrapper t)
+
+roundTripEqualWithTimeout :: Int -> Text -> Expectation
+roundTripEqualWithTimeout time t =
+  timeout time (action >>= evaluate) >>= (`shouldSatisfy`Data.Maybe.isJust)
+ where
+  action = fmap (fmap PPTextWrapper)
+                (parsePrintModuleTests defaultTestConfig "TestFakeFileName.hs" t)
+
+newtype PPTextWrapper = PPTextWrapper Text
+  deriving Eq
+
+instance Show PPTextWrapper where
+  show (PPTextWrapper t) = "\n" ++ Text.unpack t
+
+defaultTestConfig :: Config
+defaultTestConfig = Config
+  { _conf_version                   = _conf_version staticDefaultConfig
+  , _conf_debug                     = _conf_debug staticDefaultConfig
+  , _conf_layout                    = LayoutConfig
+    { _lconfig_cols                      = coerce (80 :: Int)
+    , _lconfig_indentPolicy              = coerce IndentPolicyFree
+    , _lconfig_indentAmount              = coerce (2 :: Int)
+    , _lconfig_indentWhereSpecial        = coerce True
+    , _lconfig_indentListSpecial         = coerce True
+    , _lconfig_importColumn              = coerce (60 :: Int)
+    , _lconfig_importAsColumn            = coerce (60 :: Int)
+    , _lconfig_altChooser                = coerce $ AltChooserBoundedSearch 3
+    , _lconfig_columnAlignMode           = coerce (ColumnAlignModeMajority 0.7)
+    , _lconfig_alignmentLimit            = coerce (30 :: Int)
+    , _lconfig_alignmentBreakOnMultiline = coerce True
+    , _lconfig_hangingTypeSignature      = coerce False
+    , _lconfig_reformatModulePreamble    = coerce True
+    , _lconfig_allowSingleLineExportList = coerce True
+    , _lconfig_allowHangingQuasiQuotes   = coerce True
+    , _lconfig_experimentalSemicolonNewlines = coerce False
+    -- , _lconfig_allowSinglelineRecord     = coerce False
+    }
+  , _conf_errorHandling             = (_conf_errorHandling staticDefaultConfig)
+    { _econf_ExactPrintFallback = coerce ExactPrintFallbackModeNever
+    }
+  , _conf_preprocessor              = (_conf_preprocessor staticDefaultConfig)
+  , _conf_forward = ForwardOptions {_options_ghc = Identity []}
+  , _conf_roundtrip_exactprint_only = coerce False
+  , _conf_disable_formatting = coerce False
+  , _conf_obfuscate = coerce False
+  }
 
 
 
diff --git a/src-unittests/TestUtils.hs b/src-unittests/TestUtils.hs
deleted file mode 100644
index 942f4aa..0000000
--- a/src-unittests/TestUtils.hs
+++ /dev/null
@@ -1,75 +0,0 @@
-module TestUtils where
-
-
-
-import Language.Haskell.Brittany.Internal.Prelude
-import qualified Data.Maybe
-import qualified Data.Semigroup as Semigroup
-import qualified Data.Text as Text
-
-import Test.Hspec
-
--- import NeatInterpolation
-
-import Language.Haskell.Brittany.Internal
-
-import Language.Haskell.Brittany.Internal.Config.Types
-import Language.Haskell.Brittany.Internal.Config
-
-import System.Timeout ( timeout )
-
-import Data.Coerce ( coerce )
-
-
-
-roundTripEqual :: Text -> Expectation
-roundTripEqual t =
-  fmap (fmap PPTextWrapper)
-       (parsePrintModuleTests defaultTestConfig "TestFakeFileName.hs" t)
-    `shouldReturn` Right (PPTextWrapper t)
-
-roundTripEqualWithTimeout :: Int -> Text -> Expectation
-roundTripEqualWithTimeout time t =
-  timeout time (action >>= evaluate) >>= (`shouldSatisfy`Data.Maybe.isJust)
- where
-  action = fmap (fmap PPTextWrapper)
-                (parsePrintModuleTests defaultTestConfig "TestFakeFileName.hs" t)
-
-newtype PPTextWrapper = PPTextWrapper Text
-  deriving Eq
-
-instance Show PPTextWrapper where
-  show (PPTextWrapper t) = "\n" ++ Text.unpack t
-
-defaultTestConfig :: Config
-defaultTestConfig = Config
-  { _conf_version                   = _conf_version staticDefaultConfig
-  , _conf_debug                     = _conf_debug staticDefaultConfig
-  , _conf_layout                    = LayoutConfig
-    { _lconfig_cols                      = coerce (80 :: Int)
-    , _lconfig_indentPolicy              = coerce IndentPolicyFree
-    , _lconfig_indentAmount              = coerce (2 :: Int)
-    , _lconfig_indentWhereSpecial        = coerce True
-    , _lconfig_indentListSpecial         = coerce True
-    , _lconfig_importColumn              = coerce (60 :: Int)
-    , _lconfig_importAsColumn            = coerce (60 :: Int)
-    , _lconfig_altChooser                = coerce $ AltChooserBoundedSearch 3
-    , _lconfig_columnAlignMode           = coerce (ColumnAlignModeMajority 0.7)
-    , _lconfig_alignmentLimit            = coerce (30 :: Int)
-    , _lconfig_alignmentBreakOnMultiline = coerce True
-    , _lconfig_hangingTypeSignature      = coerce False
-    , _lconfig_reformatModulePreamble    = coerce True
-    , _lconfig_allowSingleLineExportList = coerce True
-    , _lconfig_allowHangingQuasiQuotes   = coerce True
-    , _lconfig_experimentalSemicolonNewlines = coerce False
-    -- , _lconfig_allowSinglelineRecord     = coerce False
-    }
-  , _conf_errorHandling             = (_conf_errorHandling staticDefaultConfig)
-    { _econf_ExactPrintFallback = coerce ExactPrintFallbackModeNever
-    }
-  , _conf_preprocessor              = (_conf_preprocessor staticDefaultConfig)
-  , _conf_forward = ForwardOptions {_options_ghc = Identity []}
-  , _conf_roundtrip_exactprint_only = coerce False
-  , _conf_disable_formatting = coerce False
-  , _conf_obfuscate = coerce False
-  }