✅ Added methods tests for MediaType domain

internal/domain/media_type_test.go

@@ -0,0 +1,32 @@
+package domain_test
+
+import (
+	"testing"
+
+	"source.toby3d.me/toby3d/home/internal/domain"
+)
+
+func TestMediaType_Type(t *testing.T) {
+	t.Parallel()
+
+	for name, tc := range map[string]struct {
+		input  string
+		expect string
+	}{
+		"exists": {input: "image/jpeg", expect: "image/jpeg"},
+		"main":   {input: "image/", expect: ""},
+		"sub":    {input: "/jpeg", expect: ""},
+		"params": {input: "image/svg+xml", expect: "image/svg+xml"},
+	} {
+		tc, name := tc, name
+
+		t.Run(name, func(t *testing.T) {
+			t.Parallel()
+
+			actual := domain.NewMediaType(tc.input).Type()
+			if actual != tc.expect {
+				t.Errorf("got '%s', want '%s'", actual, tc.expect)
+			}
+		})
+	}
+}