Adjust json output-based test

tools/cutadapt/cutadapt.xml

@@ -580,8 +580,8 @@ $read_mod_options.zero_cap
             </section>
             <param name="output_selector" value="rest_file,json_stats"/>
             <output name="out1" file="cutadapt_rest.out" ftype="fasta"/>
-            <!--allow for differing schema, cutadapt and python version as well as two lines containing the number of cores -->
-            <output name="json_stats" file="cutadapt_rest.json" ftype="json" lines_diff="10"/>
+            <!-- compare to expected reproducible part of json output -->
+            <output name="json_stats" file="cutadapt_rest_json.txt" compare="contains"/>
             <output name="rest_output" file="cutadapt_rest2.out" ftype="fasta"/>
         </test>
         <!-- Ensure nextseq-trim option works -->

tools/cutadapt/test-data/cutadapt_rest.json → tools/cutadapt/test-data/cutadapt_rest_json.txt

@@ -1,23 +1,3 @@
-{
-  "tag": "Cutadapt report",
-  "schema_version": [0, 1],
-  "cutadapt_version": "3.5",
-  "python_version": "3.9.7",
-  "command_line_arguments": [
-    "-j=1",
-    "--json",
-    "stats.json",
-    "-a",
-    "AAAGATG",
-    "--rest-file=rest_output.fa",
-    "--output=out1.fa",
-    "--error-rate=0.1",
-    "--times=1",
-    "--overlap=3",
-    "--action=trim",
-    "cutadapt_rest_fa.fa"
-  ],
-  "cores": 1,
   "input": {
     "path1": "cutadapt_rest_fa.fa",
     "path2": null,
@@ -26,7 +6,7 @@
   "read_counts": {
     "input": 5,
     "filtered": {
-      "too_short": null,
+      "too_short": 0,
       "too_long": null,
       "too_many_n": null,
       "too_many_expected_errors": null,
@@ -87,4 +67,3 @@
   "adapters_read2": null,
   "poly_a_trimmed_read1": null,
   "poly_a_trimmed_read2": null
-}