update file permission

nczarr_test/ref_jsonconvention.cdl

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+netcdf tmp_jsonconvention {
+dimensions:
+	d1 = 1 ;
+variables:
+	int v(d1) ;
+		v:varconvention = "{\n\"key1\": [1,2,3], \"key2\": {\"key3\": \"abc\"}}" ;
+
+// global attributes:
+		:grpconvention = "{\"key1\": [1,2,3], \n\"key2\": {\"key3\": \"abc\"}}" ;
+data:
+
+ v = _ ;
+}

nczarr_test/run_jsonconvention.sh

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+#!/bin/sh
+
+if test "x$srcdir" = x ; then srcdir=`pwd`; fi 
+. ../test_common.sh
+
+. "$srcdir/test_nczarr.sh"
+
+# This shell script tests support for:
+# read/write using json convention
+
+set -e
+
+testcase() {
+zext=$1
+
+echo "*** Test: write then read using json convention"
+fileargs tmp_jsonconvention "mode=nczarr,$zext"
+deletemap $zext $file
+${NCGEN} -4 -b -o "$fileurl" $srcdir/ref_jsonconvention.cdl
+${NCDUMP} $fileurl > tmp_jsonconvention_${zext}.cdl
+# remove '\n' from ref file before comparing
+rm -f tmp_jsonconvention.cdl
+sed -e 's|\\n||g' < ref_jsonconvention.cdl > tmp_jsonconvention.cdl
+diff -b ${srcdir}/tmp_jsonconvention.cdl tmp_jsonconvention_${zext}.cdl
+}
+
+testcase file
+#if test "x$FEATURE_NCZARR_ZIP" = xyes ; then testcase zip; fi
+#if test "x$FEATURE_S3TESTS" = xyes ; then testcase s3; fi
+
+exit 0