Support shorthand syntax reporter1+reporter2+...

NEWS.md

@@ -1,5 +1,7 @@
 # testthat 0.11.0.9000
 
+* `find_reporter()` (and also all high-level testing functions) support a vector of reporters. For more than one reporter, a `MultiReporter` is created (#307, @krlmlr).
+
 * `with_reporter()` is used internally and gains new argument `start_end_reporter = TRUE` (@krlmlr, 355).
 
 * `expect_success()` and `expect_failure()` are new expectations designed

R/reporter-zzz.r

@@ -60,12 +60,23 @@ with_reporter <- function(reporter, code, start_end_reporter = TRUE) {
 #' Find reporter object given name or object.
 #'
 #' If not found, will return informative error message.
+#' Pass a character vector to create a \code{\link{MultiReporter}} composed
+#' of individual reporters.
 #' Will return null if given NULL.
 #'
-#' @param reporter name of reporter
+#' @param reporter name of reporter(s), or reporter object(s)
 #' @keywords internal
 find_reporter <- function(reporter) {
   if (is.null(reporter)) return(NULL)
+
+  if (length(reporter) <= 1L) {
+    find_reporter_one(reporter)
+  } else {
+    MultiReporter$new(reporters = lapply(reporter, find_reporter_one))
+  }
+}
+
+find_reporter_one <- function(reporter) {
   if (inherits(reporter, "Reporter")) return(reporter)
 
   name <- reporter

tests/testthat/test-reporter.r

@@ -6,7 +6,17 @@ test_that("can locate reporter from name", {
   expect_that(find_reporter("tap"), equals(TapReporter$new()))
   expect_that(find_reporter("list"), equals(ListReporter$new()))
   expect_that(find_reporter("multi"), equals(MultiReporter$new()))
+  expect_that(find_reporter(""), equals(Reporter$new()))
+  expect_equal(
+    find_reporter(c("summary", "stop")),
+    MultiReporter$new(
+      reporters = list(SummaryReporter$new(), StopReporter$new())))
+  expect_equal(
+    find_reporter(c("teamcity", "summary", "list")),
+    MultiReporter$new(
+      reporters = list(TeamcityReporter$new(), SummaryReporter$new(),
+                       ListReporter$new())))
 
-  expect_that(find_reporter("blah"),
-    throws_error("Can not find test reporter blah"))
+  expect_error(find_reporter(c("summary", "blah")),
+    "Can not find test reporter blah")
 })