swarm/storage/feeds/topic_test.go


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package feeds

import (
    "testing"

    "github.com/ethereum/go-ethereum/common/hexutil"
)

func TestTopic(t *testing.T) {
    related, _ := hexutil.Decode("0xabcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789")
    topicName := "test-topic"
    topic, _ := NewTopic(topicName, related)
    hex := topic.Hex()
    expectedHex := "0xdfa89c750e3108f9c2aeef0123456789abcdef0123456789abcdef0123456789"
    if hex != expectedHex {
        t.Fatalf("Expected %s, got %s", expectedHex, hex)
    }

    var topic2 Topic
    topic2.FromHex(hex)
    if topic2 != topic {
        t.Fatal("Expected recovered topic to be equal to original one")
    }

    if topic2.Name(related) != topicName {
        t.Fatal("Retrieved name does not match")
    }

    bytes, err := topic2.MarshalJSON()
    if err != nil {
        t.Fatal(err)
    }
    expectedJSON := `"0xdfa89c750e3108f9c2aeef0123456789abcdef0123456789abcdef0123456789"`
    equal, err := areEqualJSON(expectedJSON, string(bytes))
    if err != nil {
        t.Fatal(err)
    }
    if !equal {
        t.Fatalf("Expected JSON to be %s, got %s", expectedJSON, string(bytes))
    }

    err = topic2.UnmarshalJSON(bytes)
    if err != nil {
        t.Fatal(err)
    }
    if topic2 != topic {
        t.Fatal("Expected recovered topic to be equal to original one")
    }

}