package config import ( "reflect" "testing" "github.com/mitchellh/reflectwalk" ) func BenchmarkVariableDetectWalker(b *testing.B) { w := new(variableDetectWalker) str := reflect.ValueOf(`foo ${var.bar} bar ${bar.baz.bing} $${escaped}`) b.ResetTimer() for i := 0; i < b.N; i++ { w.Variables = nil w.Primitive(str) } } func BenchmarkVariableReplaceWalker(b *testing.B) { w := &variableReplaceWalker{ Values: map[string]string{ "var.bar": "bar", "bar.baz.bing": "baz", }, } str := `foo ${var.bar} bar ${bar.baz.bing} $${escaped}` b.ResetTimer() for i := 0; i < b.N; i++ { if err := reflectwalk.Walk(&str, w); err != nil { panic(err) } } } func TestVariableDetectWalker(t *testing.T) { w := new(variableDetectWalker) str := `foo ${var.bar}` if err := w.Primitive(reflect.ValueOf(str)); err != nil { t.Fatalf("err: %s", err) } if len(w.Variables) != 1 { t.Fatalf("bad: %#v", w.Variables) } if w.Variables["var.bar"].(*UserVariable).FullKey() != "var.bar" { t.Fatalf("bad: %#v", w.Variables) } } func TestVariableDetectWalker_resource(t *testing.T) { w := new(variableDetectWalker) str := `foo ${ec2.foo.bar}` if err := w.Primitive(reflect.ValueOf(str)); err != nil { t.Fatalf("err: %s", err) } if len(w.Variables) != 1 { t.Fatalf("bad: %#v", w.Variables) } if w.Variables["ec2.foo.bar"].(*ResourceVariable).FullKey() != "ec2.foo.bar" { t.Fatalf("bad: %#v", w.Variables) } } func TestVariableDetectWalker_bad(t *testing.T) { w := new(variableDetectWalker) str := `foo ${bar}` if err := w.Primitive(reflect.ValueOf(str)); err == nil { t.Fatal("should error") } } func TestVariableDetectWalker_escaped(t *testing.T) { w := new(variableDetectWalker) str := `foo $${var.bar}` if err := w.Primitive(reflect.ValueOf(str)); err != nil { t.Fatalf("err: %s", err) } if len(w.Variables) > 0 { t.Fatalf("bad: %#v", w.Variables) } } func TestVariableDetectWalker_empty(t *testing.T) { w := new(variableDetectWalker) str := `foo` if err := w.Primitive(reflect.ValueOf(str)); err != nil { t.Fatalf("err: %s", err) } if len(w.Variables) > 0 { t.Fatalf("bad: %#v", w.Variables) } } func TestVariableReplaceWalker(t *testing.T) { w := &variableReplaceWalker{ Values: map[string]string{ "var.bar": "bar", "var.unknown": UnknownVariableValue, }, } cases := []struct { Input interface{} Output interface{} }{ { `foo ${var.bar}`, "foo bar", }, { []string{"foo", "${var.bar}"}, []string{"foo", "bar"}, }, { map[string]interface{}{ "ami": "${var.bar}", "security_groups": []interface{}{ "foo", "${var.bar}", }, }, map[string]interface{}{ "ami": "bar", "security_groups": []interface{}{ "foo", "bar", }, }, }, { map[string]interface{}{ "foo": map[string]interface{}{ "foo": []string{"${var.bar}"}, }, }, map[string]interface{}{ "foo": map[string]interface{}{ "foo": []string{"bar"}, }, }, }, { map[string]interface{}{ "foo": "bar", "bar": "hello${var.unknown}world", }, map[string]interface{}{ "foo": "bar", }, }, { map[string]interface{}{ "foo": []string{"foo", "${var.unknown}", "bar"}, }, map[string]interface{}{}, }, } for i, tc := range cases { var input interface{} = tc.Input if reflect.ValueOf(tc.Input).Kind() == reflect.String { input = &tc.Input } if err := reflectwalk.Walk(input, w); err != nil { t.Fatalf("err: %s", err) } if !reflect.DeepEqual(tc.Input, tc.Output) { t.Fatalf("bad %d: %#v", i, tc.Input) } } } func TestVariableReplaceWalker_unknown(t *testing.T) { cases := []struct { Input interface{} Output interface{} Keys []string }{ { map[string]interface{}{ "foo": "bar", "bar": "hello${var.unknown}world", }, map[string]interface{}{ "foo": "bar", }, []string{"bar"}, }, { map[string]interface{}{ "foo": []string{"foo", "${var.unknown}", "bar"}, }, map[string]interface{}{}, []string{"foo"}, }, { map[string]interface{}{ "foo": map[string]interface{}{ "bar": "${var.unknown}", }, }, map[string]interface{}{ "foo": map[string]interface{}{}, }, []string{"foo.bar"}, }, } for i, tc := range cases { var input interface{} = tc.Input w := &variableReplaceWalker{ Values: map[string]string{ "var.unknown": UnknownVariableValue, }, } if reflect.ValueOf(tc.Input).Kind() == reflect.String { input = &tc.Input } if err := reflectwalk.Walk(input, w); err != nil { t.Fatalf("err: %s", err) } if !reflect.DeepEqual(tc.Input, tc.Output) { t.Fatalf("bad %d: %#v", i, tc.Input) } if !reflect.DeepEqual(tc.Keys, w.UnknownKeys) { t.Fatalf("bad: %#v", w.UnknownKeys) } } }