test: added tests in all packages

Adding smoke tests in all packages to circumvent go1.22 issue: golang/go#65653

Signed-off-by: Frederic BIDON <fredbi@yahoo.com>

internal/testing/data_test.go

@@ -0,0 +1,11 @@
+package testing
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestInvalidJSON(t *testing.T) {
+	require.NotEmpty(t, InvalidJSONMessage)
+}

internal/testing/petstore/api_test.go

@@ -0,0 +1,14 @@
+package petstore
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestAPI(t *testing.T) {
+	doc, api := NewAPI(t)
+
+	require.NotNil(t, doc)
+	require.NotNil(t, api)
+}

logger/logger_test.go

@@ -0,0 +1,11 @@
+package logger
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestLogger(t *testing.T) {
+	require.False(t, DebugEnabled())
+}

logger/standard.go

@@ -5,6 +5,8 @@ import (
 	"os"
 )
 
+var _ Logger = StandardLogger{}
+
 type StandardLogger struct{}
 
 func (StandardLogger) Printf(format string, args ...interface{}) {

middleware/header/header_test.go

@@ -0,0 +1,16 @@
+package header
+
+import (
+	"net/http"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestHeader(t *testing.T) {
+	hdr := http.Header{
+		"x-test": []string{"value"},
+	}
+	clone := Copy(hdr)
+	require.Len(t, clone, len(hdr))
+}