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-rw-r--r--test/utils/matchers.go30
1 files changed, 30 insertions, 0 deletions
diff --git a/test/utils/matchers.go b/test/utils/matchers.go
index 69fb0cdfe..59436a3ab 100644
--- a/test/utils/matchers.go
+++ b/test/utils/matchers.go
@@ -1,6 +1,7 @@
package utils
import (
+ "encoding/json"
"fmt"
"net/url"
@@ -166,3 +167,32 @@ func (matcher *ExitMatcher) MatchMayChangeInTheFuture(actual interface{}) bool {
}
return true
}
+
+type validJSONMatcher struct {
+ types.GomegaMatcher
+}
+
+func BeValidJSON() *validJSONMatcher {
+ return &validJSONMatcher{}
+}
+
+func (matcher *validJSONMatcher) Match(actual interface{}) (success bool, err error) {
+ s, ok := actual.(string)
+ if !ok {
+ return false, fmt.Errorf("validJSONMatcher expects a string, not %q", actual)
+ }
+
+ var i interface{}
+ if err := json.Unmarshal([]byte(s), &i); err != nil {
+ return false, nil
+ }
+ return true, nil
+}
+
+func (matcher *validJSONMatcher) FailureMessage(actual interface{}) (message string) {
+ return format.Message(actual, "to be valid JSON")
+}
+
+func (matcher *validJSONMatcher) NegatedFailureMessage(actual interface{}) (message string) {
+ return format.Message(actual, "to _not_ be valid JSON")
+}