65 lines
2.2 KiB
Go
65 lines
2.2 KiB
Go
package matchers
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"github.com/onsi/gomega/format"
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)
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type MatchJSONMatcher struct {
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JSONToMatch interface{}
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firstFailurePath []interface{}
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}
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func (matcher *MatchJSONMatcher) Match(actual interface{}) (success bool, err error) {
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actualString, expectedString, err := matcher.prettyPrint(actual)
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if err != nil {
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return false, err
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}
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var aval interface{}
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var eval interface{}
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// this is guarded by prettyPrint
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json.Unmarshal([]byte(actualString), &aval)
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json.Unmarshal([]byte(expectedString), &eval)
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var equal bool
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equal, matcher.firstFailurePath = deepEqual(aval, eval)
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return equal, nil
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}
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func (matcher *MatchJSONMatcher) FailureMessage(actual interface{}) (message string) {
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actualString, expectedString, _ := matcher.prettyPrint(actual)
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return formattedMessage(format.Message(actualString, "to match JSON of", expectedString), matcher.firstFailurePath)
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}
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func (matcher *MatchJSONMatcher) NegatedFailureMessage(actual interface{}) (message string) {
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actualString, expectedString, _ := matcher.prettyPrint(actual)
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return formattedMessage(format.Message(actualString, "not to match JSON of", expectedString), matcher.firstFailurePath)
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}
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func (matcher *MatchJSONMatcher) prettyPrint(actual interface{}) (actualFormatted, expectedFormatted string, err error) {
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actualString, ok := toString(actual)
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if !ok {
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return "", "", fmt.Errorf("MatchJSONMatcher matcher requires a string, stringer, or []byte. Got actual:\n%s", format.Object(actual, 1))
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}
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expectedString, ok := toString(matcher.JSONToMatch)
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if !ok {
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return "", "", fmt.Errorf("MatchJSONMatcher matcher requires a string, stringer, or []byte. Got expected:\n%s", format.Object(matcher.JSONToMatch, 1))
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}
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abuf := new(bytes.Buffer)
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ebuf := new(bytes.Buffer)
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if err := json.Indent(abuf, []byte(actualString), "", " "); err != nil {
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return "", "", fmt.Errorf("Actual '%s' should be valid JSON, but it is not.\nUnderlying error:%s", actualString, err)
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}
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if err := json.Indent(ebuf, []byte(expectedString), "", " "); err != nil {
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return "", "", fmt.Errorf("Expected '%s' should be valid JSON, but it is not.\nUnderlying error:%s", expectedString, err)
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}
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return abuf.String(), ebuf.String(), nil
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}
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