feat: runtime manager

lobby/internal/domain/engineimage/resolver_test.go

@@ -0,0 +1,96 @@
+package engineimage_test
+
+import (
+	"testing"
+
+	"galaxy/lobby/internal/domain/engineimage"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestNewResolverAcceptsValidTemplate(t *testing.T) {
+	t.Parallel()
+
+	resolver, err := engineimage.NewResolver("galaxy/game:{engine_version}")
+	require.NoError(t, err)
+	require.NotNil(t, resolver)
+	assert.Equal(t, "galaxy/game:{engine_version}", resolver.Template())
+}
+
+func TestNewResolverRejectsEmptyTemplate(t *testing.T) {
+	t.Parallel()
+
+	cases := []string{"", "   "}
+	for _, candidate := range cases {
+		_, err := engineimage.NewResolver(candidate)
+		require.Error(t, err)
+	}
+}
+
+func TestNewResolverRejectsTemplateWithoutPlaceholder(t *testing.T) {
+	t.Parallel()
+
+	_, err := engineimage.NewResolver("galaxy/game:1.0.0")
+	require.Error(t, err)
+}
+
+func TestResolveSubstitutesVersion(t *testing.T) {
+	t.Parallel()
+
+	resolver, err := engineimage.NewResolver("registry.example.com/galaxy/game:{engine_version}")
+	require.NoError(t, err)
+
+	got, err := resolver.Resolve("v1.4.7")
+	require.NoError(t, err)
+	assert.Equal(t, "registry.example.com/galaxy/game:v1.4.7", got)
+}
+
+func TestResolveSubstitutesEveryPlaceholderOccurrence(t *testing.T) {
+	t.Parallel()
+
+	resolver, err := engineimage.NewResolver(
+		"registry.example.com/{engine_version}/game:{engine_version}",
+	)
+	require.NoError(t, err)
+
+	got, err := resolver.Resolve("v2.0.1")
+	require.NoError(t, err)
+	assert.Equal(t, "registry.example.com/v2.0.1/game:v2.0.1", got)
+}
+
+func TestResolveRejectsEmptyVersion(t *testing.T) {
+	t.Parallel()
+
+	resolver, err := engineimage.NewResolver("galaxy/game:{engine_version}")
+	require.NoError(t, err)
+
+	cases := []string{"", "   "}
+	for _, candidate := range cases {
+		_, err := resolver.Resolve(candidate)
+		require.Error(t, err)
+	}
+}
+
+func TestResolveReusesValidatedTemplate(t *testing.T) {
+	t.Parallel()
+
+	resolver, err := engineimage.NewResolver("galaxy/game:{engine_version}")
+	require.NoError(t, err)
+
+	first, err := resolver.Resolve("v1.0.0")
+	require.NoError(t, err)
+	second, err := resolver.Resolve("v2.0.0")
+	require.NoError(t, err)
+
+	assert.Equal(t, "galaxy/game:v1.0.0", first)
+	assert.Equal(t, "galaxy/game:v2.0.0", second)
+}
+
+func TestNilResolverResolveReturnsError(t *testing.T) {
+	t.Parallel()
+
+	var resolver *engineimage.Resolver
+	_, err := resolver.Resolve("v1.0.0")
+	require.Error(t, err)
+}