nit

go/pkg/cas/upload.go

diff --git a/go/pkg/cas/upload.go b/go/pkg/cas/upload.go
index 1621cfd..0e9fbdb 100644
--- a/go/pkg/cas/upload.go
+++ b/go/pkg/cas/upload.go
@@ -71,7 +71,7 @@
 // The relPath is relative to UploadInput.Path. Use "." for the digest of the
 // UploadInput.Path itself.
 //
-// Digest is safe to call only after the channel returned by DigestComputed()
+// Digest is safe to call only after the channel returned by DigestsComputed()
 // is closed.
 //
 // If the digest is unknown, returns (nil, err), where err is ErrDigestUnknown

go/pkg/cas/upload_test.go

diff --git a/go/pkg/cas/upload_test.go b/go/pkg/cas/upload_test.go
index 48f2869..5f00718 100644
--- a/go/pkg/cas/upload_test.go
+++ b/go/pkg/cas/upload_test.go
@@ -324,8 +324,8 @@
 	select {
 	case <-in.DigestsComputed():
 		// Good
-	case <-time.After(time.Millisecond):
-		t.Errorf("Upload succeeded, but DigestComputed() is closed")
+	case <-time.After(time.Second):
+		t.Errorf("Upload succeeded, but DigestsComputed() is not closed")
 	}
 
 	wantDigests := map[string]digest.Digest{