test: Better handling of stdout and stderr

Git-style tests (test_expect_success etc.) suppress stdout and stderr
unless -v is given. Notmuch-style tests (created by test_begin_subtest
and test_expect_equal) do not have this behavior so implement it the
same.

Additionally, for both test styles, the test-lib.sh is changed so that
the content of suppressed stdout and stderr is shown in case of failed
test.

Finally a test for this functionality is added to basic tests.

1 files changed, 27 insertions, 0 deletions

diff --git a/test/test-verbose b/test/test-verbose
new file mode 100755
index 00000000..f29a9c7d
--- /dev/null
+++ b/test/test-verbose
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+test_description='the verbosity options of the test framework itself.'
+
+. ./test-lib.sh
+
+test_expect_success 'print something in test_expect_success and pass' '
+  echo "hello stdout" &&
+  echo "hello stderr" >&2 &&
+  true
+'
+test_expect_success 'print something in test_expect_success and fail' '
+  echo "hello stdout" &&
+  echo "hello stderr" >&2 &&
+  false
+'
+test_begin_subtest 'print something between test_begin_subtest and test_expect_equal and pass'
+echo "hello stdout"
+echo "hello stderr" >&2
+test_expect_equal "a" "a"
+
+test_begin_subtest 'print something test_begin_subtest and test_expect_equal and fail'
+echo "hello stdout"
+echo "hello stderr" >&2
+test_expect_equal "a" "b"
+
+test_done