diff --git a/LICENSE.md b/LICENSE.md
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--- /dev/null
+++ b/LICENSE.md
@@ -0,0 +1,5 @@
+# Sydtest License
+
+Copyright (c) 2022 Tom Sydney Kerckhove
+
+See the Sydtest License at https://github.com/NorfairKing/sydtest/blob/master/sydtest/LICENSE.md for the full license text.
diff --git a/src/Test/Syd/Autodocodec.hs b/src/Test/Syd/Autodocodec.hs
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--- /dev/null
+++ b/src/Test/Syd/Autodocodec.hs
@@ -0,0 +1,28 @@
+{-# LANGUAGE AllowAmbiguousTypes #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE TypeApplications #-}
+
+module Test.Syd.Autodocodec
+  ( -- * Golden tests
+    goldenYamlSchemaFileVia,
+    pureGoldenYamlSchemaFileVia,
+    pureGoldenYamlSchemaFileViaCodec,
+  )
+where
+
+import Autodocodec
+import Autodocodec.Yaml
+import Data.Text (Text)
+import Test.Syd
+
+-- | Test that the Yaml schema of the produced 'Codec' is the same as what we find in the given golden file.
+goldenYamlSchemaFileVia :: FilePath -> IO (ValueCodec input output) -> GoldenTest Text
+goldenYamlSchemaFileVia fp produceCodec = goldenTextFile fp (renderColouredSchemaVia <$> produceCodec)
+
+-- | Test that the Yaml schema of the given 'Codec' is the same as what we find in the given golden file.
+pureGoldenYamlSchemaFileVia :: FilePath -> ValueCodec input output -> GoldenTest Text
+pureGoldenYamlSchemaFileVia fp c = goldenYamlSchemaFileVia fp $ pure c
+
+-- | Test that the Yaml schema of the 'Codec' of the given type is the same as what we find in the given golden file.
+pureGoldenYamlSchemaFileViaCodec :: forall a. HasCodec a => FilePath -> GoldenTest Text
+pureGoldenYamlSchemaFileViaCodec fp = pureGoldenYamlSchemaFileVia fp (codec @a)
diff --git a/sydtest-autodocodec.cabal b/sydtest-autodocodec.cabal
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--- /dev/null
+++ b/sydtest-autodocodec.cabal
@@ -0,0 +1,59 @@
+cabal-version: 1.12
+
+-- This file has been generated from package.yaml by hpack version 0.34.7.
+--
+-- see: https://github.com/sol/hpack
+
+name:           sydtest-autodocodec
+version:        0.0.0.0
+synopsis:       An autodocodec companion library for sydtest
+category:       Testing
+homepage:       https://github.com/NorfairKing/sydtest#readme
+bug-reports:    https://github.com/NorfairKing/sydtest/issues
+author:         Tom Sydney Kerckhove
+maintainer:     syd@cs-syd.eu
+copyright:      Copyright (c) 2022 Tom Sydney Kerckhove
+license:        OtherLicense
+license-file:   LICENSE.md
+build-type:     Simple
+extra-source-files:
+    LICENSE.md
+    test_resources/example.txt
+    test_resources/int.txt
+
+source-repository head
+  type: git
+  location: https://github.com/NorfairKing/sydtest
+
+library
+  exposed-modules:
+      Test.Syd.Autodocodec
+  other-modules:
+      Paths_sydtest_autodocodec
+  hs-source-dirs:
+      src
+  build-depends:
+      autodocodec
+    , autodocodec-yaml
+    , base >=4.7 && <5
+    , sydtest
+    , text
+  default-language: Haskell2010
+
+test-suite sydtest-aeson-test
+  type: exitcode-stdio-1.0
+  main-is: Spec.hs
+  other-modules:
+      Test.Syd.AutodocodecSpec
+      Paths_sydtest_autodocodec
+  hs-source-dirs:
+      test
+  ghc-options: -threaded -rtsopts -with-rtsopts=-N -Wall
+  build-tool-depends:
+      sydtest-discover:sydtest-discover
+  build-depends:
+      autodocodec
+    , base >=4.7 && <5
+    , sydtest
+    , sydtest-autodocodec
+  default-language: Haskell2010
diff --git a/test/Spec.hs b/test/Spec.hs
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--- /dev/null
+++ b/test/Spec.hs
@@ -0,0 +1,1 @@
+{-# OPTIONS_GHC -F -pgmF sydtest-discover #-}
diff --git a/test/Test/Syd/AutodocodecSpec.hs b/test/Test/Syd/AutodocodecSpec.hs
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--- /dev/null
+++ b/test/Test/Syd/AutodocodecSpec.hs
@@ -0,0 +1,27 @@
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE TypeApplications #-}
+
+module Test.Syd.AutodocodecSpec (spec) where
+
+import Autodocodec
+import Test.Syd
+import Test.Syd.Autodocodec
+
+spec :: Spec
+spec = do
+  describe "pureGoldenYamlSchemaFileViaCodec" $
+    it "Example has the same schema as before" $
+      pureGoldenYamlSchemaFileVia "test_resources/example.txt" exampleCodec
+
+  describe "pureGoldenYamlSchemaFileViaCodec" $
+    it "Int has the same schema as before" $
+      pureGoldenYamlSchemaFileViaCodec @Int "test_resources/int.txt"
+
+data Example = Example {exampleInt :: Int, exampleBool :: Bool}
+
+exampleCodec :: JSONCodec Example
+exampleCodec =
+  object "Example" $
+    Example
+      <$> requiredField "int" "example int" .= exampleInt
+      <*> requiredField "bool" "example bool" .= exampleBool
diff --git a/test_resources/example.txt b/test_resources/example.txt
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--- /dev/null
+++ b/test_resources/example.txt
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+# Example
+int: # required
+  # example int
+  <number> # between -9223372036854775808 and 9223372036854775807
+bool: # required
+  # example bool
+  <boolean>
diff --git a/test_resources/int.txt b/test_resources/int.txt
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--- /dev/null
+++ b/test_resources/int.txt
@@ -0,0 +1,1 @@
+<number> # between -9223372036854775808 and 9223372036854775807