fix: adhere to test specifications

Author: piplus2

modules/nf-core/bwa/mem/tests/main.nf.test

@@ -98,6 +98,10 @@ nextflow_process {
         config "./nextflow_sam.config"
 
         when {
+            params {
+                module_args = "--output-fmt sam"
+            }
+
             process {
                 """
                 input[0] = [
@@ -243,6 +247,10 @@ nextflow_process {
         config "./nextflow_sam.config"
 
         when {
+            params {
+                module_args = "--output-fmt sam"
+            }
+
             process {
                 """
                 input[0] = [