test: fix unused warnings

decision/engine_test.go

@@ -245,7 +245,7 @@ func TestTaggingPeers(t *testing.T) {
 		t.Fatal("Incorrect number of peers tagged")
 	}
 	envelope.Sent()
-	next = <-sanfrancisco.Engine.Outbox()
+	<-sanfrancisco.Engine.Outbox()
 	sanfrancisco.PeerTagger.wait.Wait()
 	if sanfrancisco.PeerTagger.count() != 0 {
 		t.Fatal("Peers should be untagged but weren't")

session/session_test.go

@@ -188,6 +188,9 @@ func TestSessionGetBlocks(t *testing.T) {
 	if len(receivedBlocks) != len(blks) {
 		t.Fatal("did not receive enough blocks")
 	}
+	if len(newCancelReqs) != len(receivedBlocks) {
+		t.Fatal("expected an equal number of received blocks and cancels")
+	}
 	for _, block := range receivedBlocks {
 		if !testutil.ContainsBlock(blks, block) {
 			t.Fatal("received incorrect block")

sessionmanager/sessionmanager_test.go

@@ -19,9 +19,6 @@ import (
 type fakeSession struct {
 	interested []cid.Cid
 	blks       []blocks.Block
-	fromNetwork           bool
-	receivedBlock         bool
-	updateReceiveCounters bool
 	id         uint64
 	pm         *fakePeerManager
 	srs        *fakeRequestSplitter