Include empty files in downloads (#1213)

Author: IsaacG

cmd/download.go

@@ -101,10 +101,6 @@ func runDownload(cfg config.Config, flags *pflag.FlagSet, args []string) error {
 			// TODO: deal with it
 			continue
 		}
-		// Don't bother with empty files.
-		if res.Header.Get("Content-Length") == "0" {
-			continue
-		}
 
 		path := sf.relativePath()
 		dir := filepath.Join(metadata.Dir, filepath.Dir(path))

cmd/download_test.go

@@ -353,7 +353,7 @@ func assertDownloadedCorrectFiles(t *testing.T, targetDir string) {
 
 	path := filepath.Join(targetDir, "bogus-track", "bogus-exercise", "file-3.txt")
 	_, err := os.Lstat(path)
-	assert.True(t, os.IsNotExist(err), "It should not write the file if empty.")
+	assert.NoError(t, err)
 }
 
 func TestDownloadError(t *testing.T) {