add stub for kallisto/index (#1944)

modules/kallisto/index/main.nf

@@ -31,4 +31,14 @@ process KALLISTO_INDEX {
         kallisto: \$(echo \$(kallisto 2>&1) | sed 's/^kallisto //; s/Usage.*\$//')
     END_VERSIONS
     """
+
+    stub:
+    """
+    touch kallisto
+
+    cat <<-END_VERSIONS > versions.yml
+    "${task.process}":
+        kallisto: \$(echo \$(kallisto 2>&1) | sed 's/^kallisto //; s/Usage.*\$//')
+    END_VERSIONS
+    """
 }

tests/modules/kallisto/index/test.yml

@@ -6,3 +6,11 @@
   files:
     - path: output/kallisto/kallisto
       md5sum: bf8a58d329dddc96f0c32f7823bc0310
+
+- name: kallisto index test_kallisto_index stub
+  command: nextflow run ./tests/modules/kallisto/index -entry test_kallisto_index -c ./tests/config/nextflow.config -c ./tests/modules/kallisto/index/nextflow.config -stub-run
+  tags:
+    - kallisto
+    - kallisto/index
+  files:
+    - path: output/kallisto/kallisto