1 files changed, 38 insertions, 0 deletions
diff --git a/whisper/topic_test.go b/whisper/topic_test.go
new file mode 100644
index 000000000..4626e2ae5
--- /dev/null
+++ b/whisper/topic_test.go
@@ -0,0 +1,38 @@
+package whisper
+
+import (
+	"bytes"
+	"testing"
+)
+
+var topicCreationTests = []struct {
+	data []byte
+	hash [4]byte
+}{
+	{hash: [4]byte{0xc5, 0xd2, 0x46, 0x01}, data: nil},
+	{hash: [4]byte{0xc5, 0xd2, 0x46, 0x01}, data: []byte{}},
+	{hash: [4]byte{0x8f, 0x9a, 0x2b, 0x7d}, data: []byte("test name")},
+}
+
+func TestTopicCreation(t *testing.T) {
+	for i, tt := range topicCreationTests {
+		topic := NewTopic(tt.data)
+		if bytes.Compare(topic[:], tt.hash[:]) != 0 {
+			t.Errorf("test %d: hash mismatch: have %v, want %v.", i, topic, tt.hash)
+		}
+	}
+}
+
+func TestTopicSetCreation(t *testing.T) {
+	topics := make([]Topic, len(topicCreationTests))
+	for i, tt := range topicCreationTests {
+		topics[i] = NewTopic(tt.data)
+	}
+	set := NewTopicSet(topics)
+	for i, tt := range topicCreationTests {
+		topic := NewTopic(tt.data)
+		if _, ok := set[topic.String()]; !ok {
+			t.Errorf("topic %d: not found in set", i)
+		}
+	}
+}