Add comprehensive test suite

go.mod

@@ -3,15 +3,17 @@ module git.dws.rip/DWS/dyn
 go 1.24.4
 
 require (
+	github.com/TwiN/go-away v1.8.1
 	github.com/gin-gonic/gin v1.11.0
 	github.com/mattn/go-sqlite3 v1.14.24
+	github.com/stretchr/testify v1.11.1
 )
 
 require (
-	github.com/TwiN/go-away v1.8.1 // indirect
 	github.com/bytedance/sonic v1.14.0 // indirect
 	github.com/bytedance/sonic/loader v0.3.0 // indirect
 	github.com/cloudwego/base64x v0.1.6 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.8 // indirect
 	github.com/gin-contrib/sse v1.1.0 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect
@@ -26,6 +28,7 @@ require (
 	github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/quic-go/qpack v0.5.1 // indirect
 	github.com/quic-go/quic-go v0.54.0 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
@@ -40,4 +43,5 @@ require (
 	golang.org/x/text v0.30.0 // indirect
 	golang.org/x/tools v0.37.0 // indirect
 	google.golang.org/protobuf v1.36.9 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )