diff --git a/app/ghcup/GHCup/OptParse/GC.hs b/app/ghcup/GHCup/OptParse/GC.hs
index 78ea706..2072287 100644
--- a/app/ghcup/GHCup/OptParse/GC.hs
+++ b/app/ghcup/GHCup/OptParse/GC.hs
@@ -47,7 +47,7 @@ data GCOptions = GCOptions
   , gcHLSNoGHC :: Bool
   , gcCache :: Bool
   , gcTmp :: Bool
-  }
+  } deriving (Eq, Show)
 
 
 
diff --git a/app/ghcup/GHCup/OptParse/Run.hs b/app/ghcup/GHCup/OptParse/Run.hs
index 0d9ad03..b46e058 100644
--- a/app/ghcup/GHCup/OptParse/Run.hs
+++ b/app/ghcup/GHCup/OptParse/Run.hs
@@ -68,7 +68,7 @@ data RunOptions = RunOptions
   , runBinDir     :: Maybe FilePath
   , runQuick      :: Bool
   , runCOMMAND    :: [String]
-  }
+  } deriving (Eq, Show)
 
 
 
diff --git a/ghcup.cabal b/ghcup.cabal
index 26bee16..51fce99 100644
--- a/ghcup.cabal
+++ b/ghcup.cabal
@@ -428,6 +428,8 @@ test-suite ghcup-optparse-test
     UpgradeTest
     CompileTest
     WhereisTest
+    GCTest
+    RunTest
   default-language: Haskell2010
   ghc-options: -Wall
   build-depends: base, ghcup, ghcup-optparse, tasty, tasty-hunit, optparse-applicative, versions, text, uri-bytestring
diff --git a/test/optparse-test/GCTest.hs b/test/optparse-test/GCTest.hs
new file mode 100644
index 0000000..aea524e
--- /dev/null
+++ b/test/optparse-test/GCTest.hs
@@ -0,0 +1,42 @@
+module GCTest where
+
+import Test.Tasty
+import GHCup.OptParse
+import Utils
+
+
+gcTests :: TestTree
+gcTests = buildTestTree gcParseWith ("gc", gcCheckList)
+
+defaultOptions :: GCOptions
+defaultOptions =
+  GCOptions
+    False
+    False
+    False
+    False
+    False
+    False
+
+gcCheckList :: [(String, GCOptions)]
+gcCheckList =
+  [ ("gc", defaultOptions)
+  , ("gc -o", defaultOptions{gcOldGHC = True})
+  , ("gc --ghc-old", defaultOptions{gcOldGHC = True})
+  , ("gc -p", defaultOptions{gcProfilingLibs = True})
+  , ("gc --profiling-libs", defaultOptions{gcProfilingLibs = True})
+  , ("gc -s", defaultOptions{gcShareDir = True})
+  , ("gc --share-dir", defaultOptions{gcShareDir = True})
+  , ("gc -h", defaultOptions{gcHLSNoGHC = True})
+  , ("gc --hls-no-ghc", defaultOptions{gcHLSNoGHC = True})
+  , ("gc -c", defaultOptions{gcCache = True})
+  , ("gc --cache", defaultOptions{gcCache = True})
+  , ("gc -t", defaultOptions{gcTmp = True})
+  , ("gc --tmpdirs", defaultOptions{gcTmp = True})
+  , ("gc -o -p -s -h -c -t", GCOptions True True True True True True)
+  ]
+
+gcParseWith :: [String] -> IO GCOptions
+gcParseWith args = do
+  GC a <- parseWith args
+  pure a
diff --git a/test/optparse-test/Main.hs b/test/optparse-test/Main.hs
index 1091c84..0430e36 100644
--- a/test/optparse-test/Main.hs
+++ b/test/optparse-test/Main.hs
@@ -12,6 +12,7 @@ import qualified ListTest
 import qualified UpgradeTest
 import qualified CompileTest
 import qualified WhereisTest
+import qualified GCTest
 
 main :: IO ()
 main = defaultMain $ testGroup "ghcup"
@@ -26,4 +27,5 @@ main = defaultMain $ testGroup "ghcup"
   , UpgradeTest.upgradeTests
   , CompileTest.compileTests
   , WhereisTest.whereisTests
+  , GCTest.gcTests
   ]
diff --git a/test/optparse-test/RunTest.hs b/test/optparse-test/RunTest.hs
new file mode 100644
index 0000000..8655e3d
--- /dev/null
+++ b/test/optparse-test/RunTest.hs
@@ -0,0 +1,31 @@
+module RunTest where
+
+import Test.Tasty
+import GHCup.OptParse
+import Utils
+
+
+runTests :: TestTree
+runTests = buildTestTree runParseWith ("run", runCheckList)
+
+defaultOptions :: RunOptions
+defaultOptions =
+  RunOptions
+    False
+    False
+    False
+    Nothing
+    Nothing
+    Nothing
+    Nothing
+    Nothing
+    False
+    []
+
+runCheckList :: [(String, RunOptions)]
+runCheckList = []
+
+runParseWith :: [String] -> IO RunOptions
+runParseWith args = do
+  Run a <- parseWith args
+  pure a