updating ListTargets delegate test to check iteration of children and correct (lack of) overwriting.

Signed-off-by: David Lawrence <david.lawrence@docker.com> (github: endophage)

client/client.go

@@ -454,8 +454,7 @@ func (r *NotaryRepository) listSubtree(targets map[string]*Target, role string,
 		}
 		for name, meta := range tgts.Signed.Targets {
 			if _, ok := targets[name]; !ok {
-				target := &Target{Name: name, Hashes: meta.Hashes, Length: meta.Length}
-				targets[name] = target
+				targets[name] = &Target{Name: name, Hashes: meta.Hashes, Length: meta.Length}
 			}
 		}
 		for _, d := range tgts.Signed.Delegations.Roles {

client/client_test.go

@@ -806,6 +806,14 @@ func fakeServerData(t *testing.T, repo *NotaryRepository, mux *http.ServeMux,
 		assert.NoError(t, err)
 	}
 
+	signedLevel2, err := savedTUFRepo.SignTargets(
+		"targets/level2",
+		data.DefaultExpires(data.CanonicalTargetsRole),
+	)
+	if _, ok := savedTUFRepo.Targets["targets/level2"]; ok {
+		assert.NoError(t, err)
+	}
+
 	signedSnapshot, err := savedTUFRepo.SignSnapshot(
 		data.DefaultExpires("snapshot"))
 	assert.NoError(t, err)
@@ -844,6 +852,13 @@ func fakeServerData(t *testing.T, repo *NotaryRepository, mux *http.ServeMux,
 			assert.NoError(t, err)
 			fmt.Fprint(w, string(level1JSON))
 		})
+
+	mux.HandleFunc("/v2/docker.com/notary/_trust/tuf/targets/level2.json",
+		func(w http.ResponseWriter, r *http.Request) {
+			level1JSON, err := json.Marshal(signedLevel2)
+			assert.NoError(t, err)
+			fmt.Fprint(w, string(level1JSON))
+		})
 }
 
 // We want to sort by name, so we can guarantee ordering.
@@ -939,6 +954,17 @@ func testListTargetWithDelegates(t *testing.T, rootType string) {
 	delegatedTarget := addTarget(t, repo, "current", "../fixtures/root-ca.crt", "targets/level1")
 	otherTarget := addTarget(t, repo, "other", "../fixtures/root-ca.crt", "targets/level1")
 
+	// setup delegated targets/level2 role
+	k, err = repo.CryptoService.Create("targets/level2", rootType)
+	assert.NoError(t, err)
+	r, err = data.NewRole("targets/level2", 1, []string{k.ID()}, nil, nil)
+	assert.NoError(t, err)
+	repo.tufRepo.UpdateDelegations(r, []data.PublicKey{k})
+	// this target should not show up as the one in targets/level1 takes higher priority
+	_ = addTarget(t, repo, "current", "../fixtures/notary-server.crt", "targets/level2")
+	// this target should show up as the name doesn't exist elsewhere
+	level2Target := addTarget(t, repo, "level2", "../fixtures/notary-server.crt", "targets/level2")
+
 	// Apply the changelist. Normally, this would be done by Publish
 
 	// load the changelist for this repo
@@ -954,6 +980,8 @@ func testListTargetWithDelegates(t *testing.T, rootType string) {
 	assert.True(t, ok)
 	_, ok = repo.tufRepo.Targets["targets/level1"].Signed.Targets["other"]
 	assert.True(t, ok)
+	_, ok = repo.tufRepo.Targets["targets/level2"].Signed.Targets["level2"]
+	assert.True(t, ok)
 
 	fakeServerData(t, repo, mux, keys)
 
@@ -961,14 +989,15 @@ func testListTargetWithDelegates(t *testing.T, rootType string) {
 	assert.NoError(t, err)
 
 	// Should be two targets
-	assert.Len(t, targets, 3, "unexpected number of targets returned by ListTargets")
+	assert.Len(t, targets, 4, "unexpected number of targets returned by ListTargets")
 
 	sort.Stable(targetSorter(targets))
 
 	// current should be first
 	assert.Equal(t, delegatedTarget, targets[0], "current target does not match")
 	assert.Equal(t, latestTarget, targets[1], "latest target does not match")
-	assert.Equal(t, otherTarget, targets[2], "other target does not match")
+	assert.Equal(t, level2Target, targets[2], "level2 target does not match")
+	assert.Equal(t, otherTarget, targets[3], "other target does not match")
 
 	// Also test GetTargetByName
 	newLatestTarget, err := repo.GetTargetByName("latest")
@@ -982,6 +1011,10 @@ func testListTargetWithDelegates(t *testing.T, rootType string) {
 	newOtherTarget, err := repo.GetTargetByName("other")
 	assert.NoError(t, err)
 	assert.True(t, reflect.DeepEqual(otherTarget, newOtherTarget), "other target does not match")
+
+	newLevel2Target, err := repo.GetTargetByName("level2")
+	assert.NoError(t, err)
+	assert.True(t, reflect.DeepEqual(level2Target, newLevel2Target), "level2 target does not match")
 }
 
 // TestValidateRootKey verifies that the public data in root.json for the root