Golang DeepStack.Get方法代碼示例

func TestFnFor_PreProcessArgs(t *testing.T) {
	stack := deepstack.DeepStack{}
	templateRules := template.Rules{}
	templateRules.Attach(func(path []interface{}, node interface{}) (interface{}, interface{}) {
		key := interface{}(nil)
		if len(path) > 0 {
			key = path[len(path)-1]
		}

		aString, ok := node.(string)
		if !ok {
			return key, node
		}

		if aString == "skip" {
			return true, nil
		}

		if aString == "refNames" {
			return key, []interface{}{"key", "value"}
		}

		if aString == "values" {
			return key, []interface{}{"a"}
		}

		if aString == "template" {
			_, hasKey := stack.Get([]string{"value"})
			if hasKey {
				return key, "processed-template"
			}

			return key, "preprocessed-template"
		}

		return key, node
	})

	fnFor := MakeFnFor(&stack, &templateRules)
	input := interface{}(map[string]interface{}{
		"Fn::For": []interface{}{"skip", "refNames", "skip", "values", "skip", "template", "skip"},
	})

	expected := []interface{}{"processed-template"}
	newKey, newNode := fnFor([]interface{}{"x", "y"}, input)
	if newKey != "y" {
		t.Fatalf("FnFor modified the path (%v instead of %v)", newKey, "y")
	}

	if !reflect.DeepEqual(newNode, expected) {
		t.Fatalf("FnFor with did not return the expected result (%#v instead of %#v)", newNode, expected)
	}
}

func TestFnFor_StackWithArray(t *testing.T) {
	stack := deepstack.DeepStack{}
	stack.Push(fallbackmap.DeepMap(map[string]interface{}{"outer": "outerValue", "masked": "outerMasked"}))

	testRefNames := []interface{}{
		[]interface{}{"key", "masked"},
		[]interface{}{nil, "masked"},
		[]interface{}{"key", nil},
		[]interface{}{nil, nil},
		[]interface{}{"masked"},
		"masked",
	}

	expected := []interface{}{
		[]interface{}{
			map[string]interface{}{
				"outer":  []interface{}{"outerValue", true},
				"masked": []interface{}{"innerMasking", true},
				"key":    []interface{}{float64(0), true},
			},
		},
		[]interface{}{
			map[string]interface{}{
				"outer":  []interface{}{"outerValue", true},
				"masked": []interface{}{"innerMasking", true},
			},
		},
		[]interface{}{
			map[string]interface{}{
				"outer":  []interface{}{"outerValue", true},
				"masked": []interface{}{"outerMasked", true},
				"key":    []interface{}{float64(0), true},
			},
		},
		[]interface{}{
			map[string]interface{}{
				"outer":  []interface{}{"outerValue", true},
				"masked": []interface{}{"outerMasked", true},
			},
		},
		[]interface{}{
			map[string]interface{}{
				"outer":  []interface{}{"outerValue", true},
				"masked": []interface{}{"innerMasking", true},
			},
		},
		[]interface{}{
			map[string]interface{}{
				"outer":  []interface{}{"outerValue", true},
				"masked": []interface{}{"innerMasking", true},
			},
		},
	}

	for i, refNames := range testRefNames {
		input := interface{}(map[string]interface{}{
			"Fn::For": []interface{}{
				refNames,
				[]interface{}{"innerMasking"},
				"aTemplate",
			},
		})

		templateRules := template.Rules{}
		templateRules.Attach(func(path []interface{}, node interface{}) (interface{}, interface{}) {
			key := interface{}(nil)
			if len(path) > 0 {
				key = path[len(path)-1]
			}
			if stringVal, ok := node.(string); !ok || stringVal != "aTemplate" {
				return key, node
			}

			generated := map[string]interface{}{}
			for binding, _ := range expected[i].([]interface{})[0].(map[string]interface{}) {
				value, has_key := stack.Get([]string{binding})
				generated[binding] = []interface{}{value, has_key}
			}

			return key, generated
		})

		fnFor := MakeFnFor(&stack, &templateRules)
		newKey, newNode := fnFor([]interface{}{"x", "y"}, input)
		if newKey != "y" {
			t.Fatalf("FnFor modified the path (%v instead of %v)", newKey, "y")
		}

		if !reflect.DeepEqual(newNode, expected[i]) {
			t.Fatalf("FnFor did not have the correct stack values with refNames %v during templateRule (%#v instead of %#v)",
				refNames,
				newNode,
				expected[i],
			)
		}
	}
}

func TestFnWith_StackWithArray(t *testing.T) {
	stack := deepstack.DeepStack{}
	stack.Push(fallbackmap.DeepMap(map[string]interface{}{"outer": "outer-value", "masked": "masked-value"}))

	input := interface{}(map[string]interface{}{
		"Fn::With": []interface{}{
			map[string]interface{}{
				"masked": "masking-value",
				"inner":  "inner-value",
			},
			map[string]interface{}{
				"outer":     "replace-with-outer",
				"masked":    "replace-with-masked",
				"inner":     "replace-with-inner",
				"untouched": "stay-the-same",
			},
		},
	})

	expected := interface{}(map[string]interface{}{
		"outer":     "outer-value",
		"masked":    "masking-value",
		"inner":     "inner-value",
		"untouched": "stay-the-same",
	})

	templateRules := template.Rules{}
	templateRules.Attach(func(path []interface{}, node interface{}) (interface{}, interface{}) {
		key := interface{}(nil)
		if len(path) > 0 {
			key = path[len(path)-1]
		}

		newNode := make(map[string]interface{})
		if nodeMap, ok := node.(map[string]interface{}); ok {
			if _, ok := node.(map[string]interface{})["untouched"]; ok {
				for key, value := range nodeMap {
					newValue, hasKey := stack.Get([]string{key})
					if hasKey {
						newNode[key] = newValue
					} else {
						newNode[key] = value
					}
				}
				return key, newNode
			}
		}

		return key, node
	})

	fnWith := MakeFnWith(&stack, &templateRules)
	newKey, newNode := fnWith([]interface{}{"x", "y"}, input)
	if newKey != "y" {
		t.Fatalf("FnWith modified the path (%v instead of %v)", newKey, "y")
	}

	if !reflect.DeepEqual(newNode, expected) {
		t.Fatalf("FnWith did not have the correct stack values during templateRule (%#v instead of %#v)",
			newNode,
			expected,
		)
	}
}