Fix windows test

Signed-off-by: Edward McFarlane <[email protected]>

cmd/protoc-gen-connect-go/main_test.go

@@ -20,6 +20,7 @@ import (
 	"io"
 	"os"
 	"os/exec"
+	"runtime"
 	"strings"
 	"testing"
 
@@ -180,8 +181,13 @@ func testCmpToTestdata(t *testing.T, content, path string) {
 	assert.Nil(t, err)
 	// Strip the copyright header and generated by line.
 	fileContent := string(b)
-	fileContent = fileContent[strings.Index(fileContent, "\n\n")+2:]
-	fileContent = strings.Replace(fileContent, "Code generated by protoc-gen-connect-go.", "Code generated by main.", 1)
+	if codeGenerateIndex := strings.Index(fileContent, "// Code generated by"); codeGenerateIndex != -1 {
+		fileContent = fileContent[codeGenerateIndex:]
+		fileContent = strings.Replace(fileContent, "Code generated by protoc-gen-connect-go.", "Code generated by main.", 1)
+	}
+	if runtime.GOOS == "windows" {
+		fileContent = strings.ReplaceAll(fileContent, "\r\n", "\n")
+	}
 	assert.Zero(t, cmp.Diff(content, fileContent))
 }