Apply suggestions from code review

Co-authored-by: Friederike Hanssen <Friederike.hanssen@qbic.uni-tuebingen.de>

nf-test.config

@@ -1,6 +1,6 @@
 config {
     testsDir "."
     workDir ".nf-test"
-    configFile "nextflow.config"
+    configFile "conf/test.config"
     profile "test"
 }

subworkflows/local/samplesheet_to_channel/main.nf

@@ -1,10 +1,3 @@
-// TODO nf-core: If in doubt look at other nf-core/subworkflows to see how we are doing things! :)
-//               https://github.com/nf-core/modules/tree/master/subworkflows
-//               You can also ask for help via your pull request or on the #subworkflows channel on the nf-core Slack workspace:
-//               https://nf-co.re/join
-// TODO nf-core: A subworkflow SHOULD import at least two modules
-
-
 workflow  SAMPLESHEET_TO_CHANNEL{
 
 	take:

subworkflows/local/samplesheet_to_channel/main.nf.test

@@ -17,8 +17,8 @@ nextflow_workflow {
                 // define inputs of the workflow here. Example:
                 input[0] = Channel.of([['patient':'test', 'sample':'test',
                                         'sex':'XX', 'status':0, 'lane':'test_L1'],
-                                        file('https://raw.githubusercontent.com/nf-core/test-datasets/modules/data/genomics/homo_sapiens/illumina/fastq/test_1.fastq.gz'),
-                                        file('https://raw.githubusercontent.com/nf-core/test-datasets/modules/data/genomics/homo_sapiens/illumina/fastq/test_2.fastq.gz'),
+                                        file(params.test_data['sarscov2']['illumina']['test_1_fastq_gz'], checkIfExists: true),
+                                        file(params.test_data['sarscov2']['illumina']['test_2_fastq_gz'], checkIfExists: true),
                                         [], [], [], [], [], [], []])
                 """
             }