test-lib.sh: add test_valid_json

This test does exactly what it says on the tin.  It expects JSON data
to be parseable by Python, at least.

Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>

diff --git a/test/test-lib.sh b/test/test-lib.sh
index cb5bb8941b52cd230e80f43a533b07bdf2ee4fec..43fffa09c639a91b9461c0faea0a6bc9bcfd1d01 100644 (file)
--- a/test/test-lib.sh
+++ b/test/test-lib.sh
@@ -524,6 +524,12 @@ test_expect_equal_json () {
     test_expect_equal "$output" "$expected" "$@"
 }
 
     test_expect_equal "$output" "$expected" "$@"
 }
 

+# Ensure that the argument is valid JSON data.
+test_valid_json () {
+    PYTHONIOENCODING=utf-8 $NOTMUCH_PYTHON -c "import sys, json; json.load(sys.stdin)" <<<"$1"
+    test_expect_equal "$?" 0
+}
+

 # Sort the top-level list of JSON data from stdin.
 test_sort_json () {
     PYTHONIOENCODING=utf-8 $NOTMUCH_PYTHON -c \
 # Sort the top-level list of JSON data from stdin.
 test_sort_json () {
     PYTHONIOENCODING=utf-8 $NOTMUCH_PYTHON -c \