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

@@ -17,14 +17,11 @@ import (
 )
 
 type fakeSession struct {
-	interested            []cid.Cid
-	blks                  []blocks.Block
-	fromNetwork           bool
-	receivedBlock         bool
-	updateReceiveCounters bool
-	id                    uint64
-	pm                    *fakePeerManager
-	srs                   *fakeRequestSplitter
+	interested []cid.Cid
+	blks       []blocks.Block
+	id         uint64
+	pm         *fakePeerManager
+	srs        *fakeRequestSplitter
 }
 
 func (*fakeSession) GetBlock(context.Context, cid.Cid) (blocks.Block, error) {