fix #222 - Windows NO_COVERAGE issue

internal/coverage/profile.go

@@ -18,13 +18,20 @@ package coverage
 
 import (
 	"go/token"
+	"os"
+	"strings"
 )
 
 // Profile is implemented as a map holding a slice of Block per each filename.
 type Profile map[string][]Block
 
 // IsCovered checks if the given token.Position is covered by the coverage Profile.
 func (p Profile) IsCovered(pos token.Position) bool {
+	// normalise path separators
+	if strings.ContainsRune(pos.Filename, '/') {
+		pos.Filename = strings.ReplaceAll(pos.Filename, "/", string(os.PathSeparator))
+	}
+
 	blocks, ok := p[pos.Filename]
 	if !ok {
 		return false

internal/engine/stubs_test.go

@@ -72,6 +72,8 @@ func loadFixture(fixture, fromPackage string) (fstest.MapFS, gomodule.GoModule,
 }
 
 func filenameFromFixture(fix string) string {
+	// Replace the path separator with the OS specific one.
+	fix = strings.ReplaceAll(fix, "/", string(os.PathSeparator))
 	return strings.ReplaceAll(fix, "_go", ".go")
 }