diff --git a/modules/gatk4/mergebamalignment/main.nf b/modules/gatk4/mergebamalignment/main.nf
index 7ba9ccda..5c36b4ba 100644
--- a/modules/gatk4/mergebamalignment/main.nf
+++ b/modules/gatk4/mergebamalignment/main.nf
@@ -43,4 +43,15 @@ process GATK4_MERGEBAMALIGNMENT {
         gatk4: \$(echo \$(gatk --version 2>&1) | sed 's/^.*(GATK) v//; s/ .*\$//')
     END_VERSIONS
     """
+
+    stub:
+    def prefix = task.ext.prefix ?: "${meta.id}"
+    """
+    touch ${prefix}.bam
+
+    cat <<-END_VERSIONS > versions.yml
+    "${task.process}":
+        gatk4: \$(echo \$(gatk --version 2>&1) | sed 's/^.*(GATK) v//; s/ .*\$//')
+    END_VERSIONS
+    """
 }
diff --git a/modules/gatk4/mutect2/main.nf b/modules/gatk4/mutect2/main.nf
index 4a1f5768..9969ad70 100644
--- a/modules/gatk4/mutect2/main.nf
+++ b/modules/gatk4/mutect2/main.nf
@@ -57,4 +57,18 @@ process GATK4_MUTECT2 {
         gatk4: \$(echo \$(gatk --version 2>&1) | sed 's/^.*(GATK) v//; s/ .*\$//')
     END_VERSIONS
     """
+
+    stub:
+    def prefix = task.ext.prefix ?: "${meta.id}"
+    """
+    touch ${prefix}.vcf.gz
+    touch ${prefix}.vcf.gz.tbi
+    touch ${prefix}.vcf.gz.stats
+    touch ${prefix}.f1r2.tar.gz
+
+    cat <<-END_VERSIONS > versions.yml
+    "${task.process}":
+        gatk4: \$(echo \$(gatk --version 2>&1) | sed 's/^.*(GATK) v//; s/ .*\$//')
+    END_VERSIONS
+    """
 }
diff --git a/modules/gatk4/revertsam/main.nf b/modules/gatk4/revertsam/main.nf
index 4e8e9ddc..3084658d 100644
--- a/modules/gatk4/revertsam/main.nf
+++ b/modules/gatk4/revertsam/main.nf
@@ -39,4 +39,15 @@ process GATK4_REVERTSAM {
         gatk4: \$(echo \$(gatk --version 2>&1) | sed 's/^.*(GATK) v//; s/ .*\$//')
     END_VERSIONS
     """
+
+    stub:
+    def prefix = task.ext.prefix ?: "${meta.id}"
+    """
+    touch ${prefix}.reverted.bam
+
+    cat <<-END_VERSIONS > versions.yml
+    "${task.process}":
+        gatk4: \$(echo \$(gatk --version 2>&1) | sed 's/^.*(GATK) v//; s/ .*\$//')
+    END_VERSIONS
+    """
 }
diff --git a/modules/gatk4/samtofastq/main.nf b/modules/gatk4/samtofastq/main.nf
index 8553e419..d8d94d69 100644
--- a/modules/gatk4/samtofastq/main.nf
+++ b/modules/gatk4/samtofastq/main.nf
@@ -40,4 +40,17 @@ process GATK4_SAMTOFASTQ {
         gatk4: \$(echo \$(gatk --version 2>&1) | sed 's/^.*(GATK) v//; s/ .*\$//')
     END_VERSIONS
     """
+
+    stub:
+    def prefix = task.ext.prefix ?: "${meta.id}"
+    """
+    touch ${prefix}.fastq.gz
+    touch ${prefix}_1.fastq.gz
+    touch ${prefix}_2.fastq.gz
+
+    cat <<-END_VERSIONS > versions.yml
+    "${task.process}":
+        gatk4: \$(echo \$(gatk --version 2>&1) | sed 's/^.*(GATK) v//; s/ .*\$//')
+    END_VERSIONS
+    """
 }
diff --git a/modules/samtools/view/main.nf b/modules/samtools/view/main.nf
index 11cfb74b..55194e88 100644
--- a/modules/samtools/view/main.nf
+++ b/modules/samtools/view/main.nf
@@ -41,4 +41,16 @@ process SAMTOOLS_VIEW {
         samtools: \$(echo \$(samtools --version 2>&1) | sed 's/^.*samtools //; s/Using.*\$//')
     END_VERSIONS
     """
+
+    stub:
+    def prefix = task.ext.prefix ?: "${meta.id}"
+    """
+    touch ${prefix}.bam
+    touch ${prefix}.cram
+
+    cat <<-END_VERSIONS > versions.yml
+    "${task.process}":
+        samtools: \$(echo \$(samtools --version 2>&1) | sed 's/^.*samtools //; s/Using.*\$//')
+    END_VERSIONS
+    """
 }
diff --git a/modules/shigatyper/main.nf b/modules/shigatyper/main.nf
new file mode 100644
index 00000000..9d5c189a
--- /dev/null
+++ b/modules/shigatyper/main.nf
@@ -0,0 +1,64 @@
+process SHIGATYPER {
+    tag "$meta.id"
+    label 'process_low'
+
+    conda (params.enable_conda ? "bioconda::shigatyper=2.0.1" : null)
+    container "${ workflow.containerEngine == 'singularity' && !task.ext.singularity_pull_docker_container ?
+        'https://depot.galaxyproject.org/singularity/shigatyper%3A2.0.1--pyhdfd78af_0':
+        'quay.io/biocontainers/shigatyper:2.0.1--pyhdfd78af_0' }"
+
+    input:
+    tuple val(meta), path(reads)
+
+    output:
+    tuple val(meta), path("${prefix}.tsv")     , emit: tsv
+    tuple val(meta), path("${prefix}-hits.tsv"), optional: true, emit: hits
+    path "versions.yml"                        , emit: versions
+
+    when:
+    task.ext.when == null || task.ext.when
+
+    script:
+    def args = task.ext.args ?: ''
+    prefix = task.ext.prefix ?: "${meta.id}"
+
+    if (meta.is_ont) {
+        """
+        shigatyper \\
+            $args \\
+            --SE $reads \\
+            --ont \\
+            --name $prefix
+
+        cat <<-END_VERSIONS > versions.yml
+        "${task.process}":
+            shigatyper: \$(echo \$(shigatyper --version 2>&1) | sed 's/^.*ShigaTyper //' )
+        END_VERSIONS
+        """
+    } else if (meta.single_end) {
+        """
+        shigatyper \\
+            $args \\
+            --SE $reads \\
+            --name $prefix
+
+        cat <<-END_VERSIONS > versions.yml
+        "${task.process}":
+            shigatyper: \$(echo \$(shigatyper --version 2>&1) | sed 's/^.*ShigaTyper //' )
+        END_VERSIONS
+        """
+    } else {
+        """
+        shigatyper \\
+            $args \\
+            --R1 ${reads[0]} \\
+            --R2 ${reads[1]} \\
+            --name $prefix
+
+        cat <<-END_VERSIONS > versions.yml
+        "${task.process}":
+            shigatyper: \$(echo \$(shigatyper --version 2>&1) | sed 's/^.*ShigaTyper //' )
+        END_VERSIONS
+        """
+    }
+}
diff --git a/modules/shigatyper/meta.yml b/modules/shigatyper/meta.yml
new file mode 100644
index 00000000..ebaded6b
--- /dev/null
+++ b/modules/shigatyper/meta.yml
@@ -0,0 +1,47 @@
+name: "shigatyper"
+description: Determine Shigella serotype from Illumina or Oxford Nanopore reads
+keywords:
+  - fastq
+  - shigella
+  - serotype
+tools:
+  - "shigatyper":
+      description: "Typing tool for Shigella spp. from WGS Illumina sequencing"
+      homepage: "https://github.com/CFSAN-Biostatistics/shigatyper"
+      documentation: "https://github.com/CFSAN-Biostatistics/shigatyper"
+      tool_dev_url: "https://github.com/CFSAN-Biostatistics/shigatyper"
+      doi: "10.1128/AEM.00165-19"
+      licence: "['Public Domain']"
+
+input:
+  - meta:
+      type: map
+      description: |
+        Groovy Map containing sample information
+        e.g. [ id:'test', single_end:false, is_ont:false ]
+  - reads:
+      type: file
+      description: Illumina or Nanopore FASTQ file
+      pattern: "*.fastq.gz"
+
+output:
+  - meta:
+      type: map
+      description: |
+        Groovy Map containing sample information
+        e.g. [ id:'test', single_end:false ]
+  - versions:
+      type: file
+      description: File containing software versions
+      pattern: "versions.yml"
+  - tsv:
+      type: file
+      description: A TSV formatted file with ShigaTyper results
+      pattern: "*.tsv"
+  - hits:
+      type: file
+      description: A TSV formatted file with individual gene hits
+      pattern: "*-hits.tsv"
+
+authors:
+  - "@rpetit3"
diff --git a/modules/slimfastq/main.nf b/modules/slimfastq/main.nf
new file mode 100644
index 00000000..19ca876f
--- /dev/null
+++ b/modules/slimfastq/main.nf
@@ -0,0 +1,52 @@
+def VERSION = '2.04'
+
+process SLIMFASTQ {
+    tag "$meta.id"
+    label 'process_low'
+
+    conda (params.enable_conda ? "bioconda::slimfastq=2.04" : null)
+    container "${ workflow.containerEngine == 'singularity' && !task.ext.singularity_pull_docker_container ?
+        'https://depot.galaxyproject.org/singularity/slimfastq:2.04--h87f3376_2':
+        'quay.io/biocontainers/slimfastq:2.04--h87f3376_2' }"
+
+    input:
+    tuple val(meta), path(fastq)
+
+    output:
+    tuple val(meta), path("*.sfq"), emit: sfq
+    path "versions.yml"           , emit: versions
+
+    when:
+    task.ext.when == null || task.ext.when
+
+    script:
+    def args = task.ext.args ?: ''
+    def prefix = task.ext.prefix ?: "${meta.id}"
+    if (meta.single_end) {
+        """
+        gzip -d -c '${fastq}' | slimfastq \\
+            $args \\
+            -f '${prefix}.sfq'
+
+        cat <<-END_VERSIONS > versions.yml
+        "${task.process}":
+            slimfastq: ${VERSION}
+        END_VERSIONS
+        """
+    } else {
+        """
+        gzip -d -c '${fastq[0]}' | slimfastq \\
+            $args \\
+            -f '${prefix}_1.sfq'
+
+        gzip -d -c '${fastq[1]}' | slimfastq \\
+            $args \\
+            -f '${prefix}_2.sfq'
+
+        cat <<-END_VERSIONS > versions.yml
+        "${task.process}":
+            slimfastq: ${VERSION}
+        END_VERSIONS
+        """
+    }
+}
diff --git a/modules/slimfastq/meta.yml b/modules/slimfastq/meta.yml
new file mode 100644
index 00000000..3b040f25
--- /dev/null
+++ b/modules/slimfastq/meta.yml
@@ -0,0 +1,41 @@
+name: "slimfastq"
+description: Fast, efficient, lossless compression of FASTQ files.
+keywords:
+  - FASTQ
+  - compression
+  - lossless
+tools:
+  - "slimfastq":
+      description: "slimfastq efficiently compresses/decompresses FASTQ files"
+      homepage: "https://github.com/Infinidat/slimfastq"
+      tool_dev_url: "https://github.com/Infinidat/slimfastq"
+      licence: "['BSD-3-clause']"
+
+input:
+  - meta:
+      type: map
+      description: |
+        Groovy Map containing sample information
+        e.g. [ id:'test', single_end:false ]
+  - fastq:
+      type: file
+      description: Either a single-end FASTQ file or paired-end files.
+      pattern: "*.{fq.gz,fastq.gz}"
+
+output:
+  - meta:
+      type: map
+      description: |
+        Groovy Map containing sample information
+        e.g. [ id:'test', single_end:false ]
+  - versions:
+      type: file
+      description: File containing software versions
+      pattern: "versions.yml"
+  - sfq:
+      type: file
+      description: Either one or two sequence files in slimfastq compressed format.
+      pattern: "*.{sfq}"
+
+authors:
+  - "@Midnighter"
diff --git a/modules/vardictjava/main.nf b/modules/vardictjava/main.nf
new file mode 100644
index 00000000..454b86a4
--- /dev/null
+++ b/modules/vardictjava/main.nf
@@ -0,0 +1,50 @@
+def VERSION = '1.8.3'
+
+process VARDICTJAVA {
+    tag "$meta.id"
+    label 'process_medium'
+
+    conda (params.enable_conda ? "bioconda::vardict-java=1.8.3" : null)
+    container "${ workflow.containerEngine == 'singularity' && !task.ext.singularity_pull_docker_container ?
+        'https://depot.galaxyproject.org/singularity/vardict-java:1.8.3--hdfd78af_0':
+        'quay.io/biocontainers/vardict-java:1.8.3--hdfd78af_0' }"
+
+    input:
+    tuple val(meta), path(bam), path(bai)
+    path(bed)
+    tuple path(fasta), path(fasta_fai)
+
+    output:
+    tuple val(meta), path("*.vcf.gz"), emit: vcf
+    path "versions.yml"              , emit: versions
+
+    when:
+    task.ext.when == null || task.ext.when
+
+    script:
+    def args = task.ext.args ?: ''
+    def args2 = task.ext.args2 ?: ''
+    def prefix = task.ext.prefix ?: "${meta.id}"
+
+    """
+    vardict-java \\
+        $args \\
+        -c 1 -S 2 -E 3 \\
+        -b $bam \\
+        -th $task.cpus \\
+        -N $prefix \\
+        -G $fasta \\
+        $bed \\
+        | teststrandbias.R \\
+        | var2vcf_valid.pl \\
+            $args2 \\
+            -N $prefix \\
+        | gzip -c > ${prefix}.vcf.gz
+
+    cat <<-END_VERSIONS > versions.yml
+    "${task.process}":
+        vardict-java: $VERSION
+        var2vcf_valid.pl: \$(echo \$(var2vcf_valid.pl -h | sed -n 2p | awk '{ print \$2 }'))
+    END_VERSIONS
+    """
+}
diff --git a/modules/vardictjava/meta.yml b/modules/vardictjava/meta.yml
new file mode 100644
index 00000000..59fba966
--- /dev/null
+++ b/modules/vardictjava/meta.yml
@@ -0,0 +1,60 @@
+name: "vardictjava"
+
+description: The Java port of the VarDict variant caller
+keywords:
+  - variant calling
+  - VarDict
+  - AstraZeneca
+tools:
+  - "vardictjava":
+      description: "Java port of the VarDict variant discovery program"
+      homepage: "https://github.com/AstraZeneca-NGS/VarDictJava"
+      documentation: "https://github.com/AstraZeneca-NGS/VarDictJava"
+      tool_dev_url: "https://github.com/AstraZeneca-NGS/VarDictJava"
+      doi: "10.1093/nar/gkw227 "
+      licence: "['MIT']"
+
+input:
+  - meta:
+      type: map
+      description: |
+        Groovy Map containing sample information
+        e.g. [ id:'test', single_end:false ]
+  - bam:
+      type: file
+      description: BAM/SAM file
+      pattern: "*.{bam,sam}"
+  - bai:
+      type: file
+      description: Index of the BAM file
+      pattern: "*.bai"
+  - fasta:
+      type: file
+      description: FASTA of the reference genome
+      pattern: "*.{fa,fasta}"
+  - fasta_fai:
+      type: file
+      description: The index of the FASTA of the reference genome
+      pattern: "*.fai"
+  - bed:
+      type: file
+      description: BED with the regions of interest
+      pattern: "*.bed"
+
+output:
+  - meta:
+      type: map
+      description: |
+        Groovy Map containing sample information
+        e.g. [ id:'test', single_end:false ]
+  - versions:
+      type: file
+      description: File containing software versions
+      pattern: "versions.yml"
+  - vcf:
+      type: file
+      description: VCF file output
+      pattern: "*.vcf.gz"
+
+authors:
+  - "@nvnieuwk"
diff --git a/tests/config/pytest_modules.yml b/tests/config/pytest_modules.yml
index 924447d3..f4feb844 100644
--- a/tests/config/pytest_modules.yml
+++ b/tests/config/pytest_modules.yml
@@ -1719,6 +1719,10 @@ seqwish/induce:
   - modules/seqwish/induce/**
   - tests/modules/seqwish/induce/**
 
+shigatyper:
+  - modules/shigatyper/**
+  - tests/modules/shigatyper/**
+
 shovill:
   - modules/shovill/**
   - tests/modules/shovill/**
@@ -1727,6 +1731,10 @@ sistr:
   - modules/sistr/**
   - tests/modules/sistr/**
 
+slimfastq:
+  - modules/slimfastq/**
+  - tests/modules/slimfastq/**
+
 snapaligner/index:
   - modules/snapaligner/index/**
   - tests/modules/snapaligner/index/**
@@ -1920,6 +1928,10 @@ unzip:
   - modules/unzip/**
   - tests/modules/unzip/**
 
+vardictjava:
+  - modules/vardictjava/**
+  - tests/modules/vardictjava/**
+
 variantbam:
   - modules/variantbam/**
   - tests/modules/variantbam/**
diff --git a/tests/modules/gatk4/mergebamalignment/main.nf b/tests/modules/gatk4/mergebamalignment/main.nf
index 8a38c129..0eb6876d 100644
--- a/tests/modules/gatk4/mergebamalignment/main.nf
+++ b/tests/modules/gatk4/mergebamalignment/main.nf
@@ -14,3 +14,14 @@ workflow test_gatk4_mergebamalignment {
 
     GATK4_MERGEBAMALIGNMENT ( input, fasta, dict )
 }
+
+workflow test_gatk4_mergebamalignment_stubs {
+     input    = [ [ id:'test' ], // meta map
+                 "test_foo.bam",
+                 "test_bar.bam"
+               ]
+    fasta    = "genome.fasta"
+    dict     = "genome.fasta.dict"
+
+    GATK4_MERGEBAMALIGNMENT ( input, fasta, dict )
+}
diff --git a/tests/modules/gatk4/mergebamalignment/test.yml b/tests/modules/gatk4/mergebamalignment/test.yml
index b1bb32b2..84a67654 100644
--- a/tests/modules/gatk4/mergebamalignment/test.yml
+++ b/tests/modules/gatk4/mergebamalignment/test.yml
@@ -7,3 +7,12 @@
     - path: output/gatk4/test.bam
       md5sum: e6f1b343700b7ccb94e81ae127433988
     - path: output/gatk4/versions.yml
+
+- name: gatk4 mergebamalignment test_gatk4_mergebamalignment_stubs
+  command: nextflow run ./tests/modules/gatk4/mergebamalignment -entry test_gatk4_mergebamalignment -c ./tests/config/nextflow.config -c ./tests/modules/gatk4/mergebamalignment/nextflow.config -stub-run
+  tags:
+    - gatk4
+    - gatk4/mergebamalignment
+  files:
+    - path: output/gatk4/test.bam
+    - path: output/gatk4/versions.yml
diff --git a/tests/modules/gatk4/mutect2/main.nf b/tests/modules/gatk4/mutect2/main.nf
index 0b4339f0..310e9ca1 100644
--- a/tests/modules/gatk4/mutect2/main.nf
+++ b/tests/modules/gatk4/mutect2/main.nf
@@ -118,3 +118,25 @@ workflow test_gatk4_mutect2_mitochondria {
 
     GATK4_MUTECT2_MITO ( input, fasta, fai, dict, [], [], [], [] )
 }
+
+workflow test_gatk4_mutect2_tumor_normal_pair_f1r2_stubs {
+    input = [ [ id:'test', normal_id:'normal', tumor_id:'tumour' ], // meta map
+              [ "foo_paired.bam",
+                "foo_paired2.bam"
+                ],
+              [ "foo_paired.bam.bai",
+                "foo_paired2.bam.bai"
+                ],
+              []
+            ]
+
+    fasta = "genome.fasta"
+    fai = "genome.fasta.fai"
+    dict = "genome.fasta.dict"
+    germline_resource = "genome_gnomAD.r2.1.1.vcf.gz"
+    germline_resource_tbi = "genome_gnomAD.r2.1.1.vcf.gz.tbi"
+    panel_of_normals = "genome_mills_and_1000G.indels.hg38.vcf.gz"
+    panel_of_normals_tbi = "genome_mills_and_1000G.indels.hg38.vcf.gz.tbi"
+
+    GATK4_MUTECT2_F1R2 ( input, fasta, fai, dict, germline_resource, germline_resource_tbi, panel_of_normals, panel_of_normals_tbi )
+}
diff --git a/tests/modules/gatk4/mutect2/test.yml b/tests/modules/gatk4/mutect2/test.yml
index 3cefce09..3853801d 100644
--- a/tests/modules/gatk4/mutect2/test.yml
+++ b/tests/modules/gatk4/mutect2/test.yml
@@ -69,3 +69,15 @@
       md5sum: fc6ea14ca2da346babe78161beea28c9
     - path: output/gatk4/test.vcf.gz.tbi
     - path: output/gatk4/versions.yml
+
+- name: gatk4 mutect2 test_gatk4_mutect2_tumor_normal_pair_f1r2_stubs
+  command: nextflow run ./tests/modules/gatk4/mutect2 -entry test_gatk4_mutect2_tumor_normal_pair_f1r2 -c ./tests/config/nextflow.config -c ./tests/modules/gatk4/mutect2/nextflow.config -stub-run
+  tags:
+    - gatk4
+    - gatk4/mutect2
+  files:
+    - path: output/gatk4/test.f1r2.tar.gz
+    - path: output/gatk4/test.vcf.gz
+    - path: output/gatk4/test.vcf.gz.stats
+    - path: output/gatk4/test.vcf.gz.tbi
+    - path: output/gatk4/versions.yml
diff --git a/tests/modules/gatk4/revertsam/main.nf b/tests/modules/gatk4/revertsam/main.nf
index ab5dddee..738ecd8f 100644
--- a/tests/modules/gatk4/revertsam/main.nf
+++ b/tests/modules/gatk4/revertsam/main.nf
@@ -11,3 +11,11 @@ workflow test_gatk4_revertsam {
 
     GATK4_REVERTSAM ( input )
 }
+
+workflow test_gatk4_revertsam_stubs {
+    input = [ [ id:'test' ], // meta map
+              "foo_paired_end.bam"
+            ]
+
+    GATK4_REVERTSAM ( input )
+}
diff --git a/tests/modules/gatk4/revertsam/test.yml b/tests/modules/gatk4/revertsam/test.yml
index 2ebdb685..89e78659 100644
--- a/tests/modules/gatk4/revertsam/test.yml
+++ b/tests/modules/gatk4/revertsam/test.yml
@@ -7,3 +7,12 @@
     - path: output/gatk4/test.reverted.bam
       md5sum: f783a88deb45c3a2c20ca12cbe1c5652
     - path: output/gatk4/versions.yml
+
+- name: gatk4 revertsam test_gatk4_revertsam_stubs
+  command: nextflow run ./tests/modules/gatk4/revertsam -entry test_gatk4_revertsam -c ./tests/config/nextflow.config -c ./tests/modules/gatk4/revertsam/nextflow.config -stub-run
+  tags:
+    - gatk4
+    - gatk4/revertsam
+  files:
+    - path: output/gatk4/test.reverted.bam
+    - path: output/gatk4/versions.yml
diff --git a/tests/modules/gatk4/samtofastq/main.nf b/tests/modules/gatk4/samtofastq/main.nf
index 26a8ce2d..79d04c7c 100644
--- a/tests/modules/gatk4/samtofastq/main.nf
+++ b/tests/modules/gatk4/samtofastq/main.nf
@@ -19,3 +19,11 @@ workflow test_gatk4_samtofastq_paired_end {
 
     GATK4_SAMTOFASTQ ( input )
 }
+
+workflow test_gatk4_samtofastq_paired_end_stubs {
+    input = [ [ id:'test', single_end: false ], // meta map
+              [ "foo_paired_end.bam" ]
+            ]
+
+    GATK4_SAMTOFASTQ ( input )
+}
diff --git a/tests/modules/gatk4/samtofastq/test.yml b/tests/modules/gatk4/samtofastq/test.yml
index eb25f33b..1288a270 100644
--- a/tests/modules/gatk4/samtofastq/test.yml
+++ b/tests/modules/gatk4/samtofastq/test.yml
@@ -19,3 +19,13 @@
     - path: output/gatk4/test_2.fastq.gz
       md5sum: 613bf64c023609e1c62ad6ce9e4be8d7
     - path: output/gatk4/versions.yml
+
+- name: gatk4 samtofastq test_gatk4_samtofastq_paired_end_stubs
+  command: nextflow run ./tests/modules/gatk4/samtofastq -entry test_gatk4_samtofastq_paired_end -c ./tests/config/nextflow.config -c ./tests/modules/gatk4/samtofastq/nextflow.config -stub-run
+  tags:
+    - gatk4
+    - gatk4/samtofastq
+  files:
+    - path: output/gatk4/test_1.fastq.gz
+    - path: output/gatk4/test_2.fastq.gz
+    - path: output/gatk4/versions.yml
diff --git a/tests/modules/samtools/view/main.nf b/tests/modules/samtools/view/main.nf
index 9c239066..bdad1078 100644
--- a/tests/modules/samtools/view/main.nf
+++ b/tests/modules/samtools/view/main.nf
@@ -22,3 +22,12 @@ workflow test_samtools_view_cram {
 
     SAMTOOLS_VIEW ( input, fasta )
 }
+
+workflow test_samtools_view_stubs {
+    input = [ [ id:'test', single_end:false ], // meta map
+                "foo_paired_end.bam",
+                []
+            ]
+
+    SAMTOOLS_VIEW ( input, [] )
+}
diff --git a/tests/modules/samtools/view/test.yml b/tests/modules/samtools/view/test.yml
index 1287d455..2718130e 100644
--- a/tests/modules/samtools/view/test.yml
+++ b/tests/modules/samtools/view/test.yml
@@ -14,3 +14,11 @@
     - samtools
   files:
     - path: output/samtools/test.cram
+
+- name: samtools view test_samtools_view_stubs
+  command: nextflow run ./tests/modules/samtools/view -entry test_samtools_view -c ./tests/config/nextflow.config -c ./tests/modules/samtools/view/nextflow.config -stub-run
+  tags:
+    - samtools/view
+    - samtools
+  files:
+    - path: output/samtools/test.bam
diff --git a/tests/modules/shigatyper/main.nf b/tests/modules/shigatyper/main.nf
new file mode 100644
index 00000000..eb4df084
--- /dev/null
+++ b/tests/modules/shigatyper/main.nf
@@ -0,0 +1,36 @@
+#!/usr/bin/env nextflow
+
+nextflow.enable.dsl = 2
+
+include { SHIGATYPER } from '../../../modules/shigatyper/main.nf'
+
+workflow test_shigatyper_pe {
+    
+    input = [ 
+        [ id:'test', single_end:false, is_ont:false ], // meta map
+        [ file(params.test_data['sarscov2']['illumina']['test_1_fastq_gz'], checkIfExists: true),
+          file(params.test_data['sarscov2']['illumina']['test_2_fastq_gz'], checkIfExists: true) ]
+    ]
+
+    SHIGATYPER ( input )
+}
+
+workflow test_shigatyper_se {
+    
+    input = [ 
+        [ id:'test', single_end:true, is_ont:false ], // meta map
+        [ file(params.test_data['sarscov2']['illumina']['test_1_fastq_gz'], checkIfExists: true) ]
+    ]
+
+    SHIGATYPER ( input )
+}
+
+workflow test_shigatyper_ont {
+    
+    input = [ 
+        [ id:'test', single_end:true, is_ont:true ], // meta map
+        [ file(params.test_data['sarscov2']['nanopore']['test_fastq_gz'], checkIfExists: true) ]
+    ]
+
+    SHIGATYPER ( input )
+}
diff --git a/tests/modules/shigatyper/nextflow.config b/tests/modules/shigatyper/nextflow.config
new file mode 100644
index 00000000..50f50a7a
--- /dev/null
+++ b/tests/modules/shigatyper/nextflow.config
@@ -0,0 +1,5 @@
+process {
+
+    publishDir = { "${params.outdir}/${task.process.tokenize(':')[-1].tokenize('_')[0].toLowerCase()}" }
+    
+}
\ No newline at end of file
diff --git a/tests/modules/shigatyper/test.yml b/tests/modules/shigatyper/test.yml
new file mode 100644
index 00000000..9dda573b
--- /dev/null
+++ b/tests/modules/shigatyper/test.yml
@@ -0,0 +1,29 @@
+- name: shigatyper test_shigatyper_pe
+  command: nextflow run tests/modules/shigatyper -entry test_shigatyper_pe -c tests/config/nextflow.config -c tests/modules/shigatyper/nextflow.config
+  tags:
+    - shigatyper
+  files:
+    - path: output/shigatyper/test.tsv
+      md5sum: 4f7d38c956993800546b9acb9881d717
+    - path: output/shigatyper/versions.yml
+      md5sum: d8ca45ed88dfba9bc570c01e4b49773b
+
+- name: shigatyper test_shigatyper_se
+  command: nextflow run tests/modules/shigatyper -entry test_shigatyper_se -c tests/config/nextflow.config -c tests/modules/shigatyper/nextflow.config
+  tags:
+    - shigatyper
+  files:
+    - path: output/shigatyper/test.tsv
+      md5sum: 4f7d38c956993800546b9acb9881d717
+    - path: output/shigatyper/versions.yml
+      md5sum: 8bbf165da5a5df3b7771a33aad197eec
+
+- name: shigatyper test_shigatyper_ont
+  command: nextflow run tests/modules/shigatyper -entry test_shigatyper_ont -c tests/config/nextflow.config -c tests/modules/shigatyper/nextflow.config
+  tags:
+    - shigatyper
+  files:
+    - path: output/shigatyper/test.tsv
+      md5sum: 4f7d38c956993800546b9acb9881d717
+    - path: output/shigatyper/versions.yml
+      md5sum: 0da333e1178e9e7e84a9116ad5a5ff71
diff --git a/tests/modules/slimfastq/main.nf b/tests/modules/slimfastq/main.nf
new file mode 100644
index 00000000..40d44285
--- /dev/null
+++ b/tests/modules/slimfastq/main.nf
@@ -0,0 +1,46 @@
+#!/usr/bin/env nextflow
+
+nextflow.enable.dsl = 2
+
+include { SLIMFASTQ } from '../../../modules/slimfastq/main.nf'
+
+workflow test_slimfastq_single_end {
+
+    input = [
+        [ id:'test', single_end:true ], // meta map
+        file(params.test_data['sarscov2']['illumina']['test_1_fastq_gz'], checkIfExists: true)
+    ]
+
+    SLIMFASTQ ( input )
+}
+
+workflow test_slimfastq_paired_end {
+
+    input = [
+        [ id:'test', single_end:false ], // meta map
+        [ file(params.test_data['sarscov2']['illumina']['test_1_fastq_gz'], checkIfExists: true),
+         file(params.test_data['sarscov2']['illumina']['test_2_fastq_gz'], checkIfExists: true)]
+    ]
+
+    SLIMFASTQ ( input )
+}
+
+workflow test_slimfastq_nanopore {
+
+    input = [
+        [ id:'test', single_end:true ], // meta map
+        file(params.test_data['sarscov2']['nanopore']['test_fastq_gz'], checkIfExists: true)
+    ]
+
+    SLIMFASTQ ( input )
+}
+
+workflow test_slimfastq_pacbio {
+
+    input = [
+        [ id:'test', single_end:true ], // meta map
+        file(params.test_data['homo_sapiens']['pacbio']['ccs_fq_gz'], checkIfExists: true)
+    ]
+
+    SLIMFASTQ ( input )
+}
diff --git a/tests/modules/slimfastq/nextflow.config b/tests/modules/slimfastq/nextflow.config
new file mode 100644
index 00000000..50f50a7a
--- /dev/null
+++ b/tests/modules/slimfastq/nextflow.config
@@ -0,0 +1,5 @@
+process {
+
+    publishDir = { "${params.outdir}/${task.process.tokenize(':')[-1].tokenize('_')[0].toLowerCase()}" }
+    
+}
\ No newline at end of file
diff --git a/tests/modules/slimfastq/test.yml b/tests/modules/slimfastq/test.yml
new file mode 100644
index 00000000..f0d8b446
--- /dev/null
+++ b/tests/modules/slimfastq/test.yml
@@ -0,0 +1,41 @@
+- name: slimfastq test_slimfastq_single_end
+  command: nextflow run tests/modules/slimfastq -entry test_slimfastq_single_end -c tests/config/nextflow.config
+  tags:
+    - slimfastq
+  files:
+    - path: output/slimfastq/test.sfq
+      md5sum: 6a942eeca6c99ee9a9a0cedab5d246f1
+    - path: output/slimfastq/versions.yml
+      md5sum: f52351f5c9e6259af02745c8eae5c780
+
+- name: slimfastq test_slimfastq_paired_end
+  command: nextflow run tests/modules/slimfastq -entry test_slimfastq_paired_end -c tests/config/nextflow.config
+  tags:
+    - slimfastq
+  files:
+    - path: output/slimfastq/test_1.sfq
+      md5sum: 6a942eeca6c99ee9a9a0cedab5d246f1
+    - path: output/slimfastq/test_2.sfq
+      md5sum: 0d2c60b52a39f7c2cb7843e848d90afd
+    - path: output/slimfastq/versions.yml
+      md5sum: 6239853705877651a4851c4cb6d62da4
+
+- name: slimfastq test_slimfastq_nanopore
+  command: nextflow run tests/modules/slimfastq -entry test_slimfastq_nanopore -c tests/config/nextflow.config
+  tags:
+    - slimfastq
+  files:
+    - path: output/slimfastq/test.sfq
+      md5sum: e17f14d64d3a75356b03ff2f9e8881f7
+    - path: output/slimfastq/versions.yml
+      md5sum: 33153f1103482a2bd35cb2f4c337c5e8
+
+- name: slimfastq test_slimfastq_pacbio
+  command: nextflow run tests/modules/slimfastq -entry test_slimfastq_pacbio -c tests/config/nextflow.config
+  tags:
+    - slimfastq
+  files:
+    - path: output/slimfastq/test.sfq
+      md5sum: 9e8389e47e6ddf8c25e92412dd628339
+    - path: output/slimfastq/versions.yml
+      md5sum: 1982789c3d5c7de37c0a9351e4ae63f7
diff --git a/tests/modules/vardictjava/main.nf b/tests/modules/vardictjava/main.nf
new file mode 100644
index 00000000..d392358a
--- /dev/null
+++ b/tests/modules/vardictjava/main.nf
@@ -0,0 +1,23 @@
+#!/usr/bin/env nextflow
+
+nextflow.enable.dsl = 2
+
+include { VARDICTJAVA } from '../../../modules/vardictjava/main.nf'
+
+workflow test_vardictjava {
+    
+    bam_input_ch = Channel.value([
+        [ id:'test' ], // meta map
+        file(params.test_data['homo_sapiens']['illumina']['test_paired_end_sorted_bam'], checkIfExists: true),
+        file(params.test_data['homo_sapiens']['illumina']['test_paired_end_sorted_bam_bai'], checkIfExists: true)
+    ])
+
+    bed = Channel.value(file(params.test_data['homo_sapiens']['genome']['genome_bed'], checkIfExists: true))
+
+    reference = Channel.value([
+        file(params.test_data['homo_sapiens']['genome']['genome_fasta'], checkIfExists: true),
+        file(params.test_data['homo_sapiens']['genome']['genome_fasta_fai'], checkIfExists: true)
+    ])
+
+    VARDICTJAVA ( bam_input_ch, bed, reference )
+}
diff --git a/tests/modules/vardictjava/nextflow.config b/tests/modules/vardictjava/nextflow.config
new file mode 100644
index 00000000..50f50a7a
--- /dev/null
+++ b/tests/modules/vardictjava/nextflow.config
@@ -0,0 +1,5 @@
+process {
+
+    publishDir = { "${params.outdir}/${task.process.tokenize(':')[-1].tokenize('_')[0].toLowerCase()}" }
+    
+}
\ No newline at end of file
diff --git a/tests/modules/vardictjava/test.yml b/tests/modules/vardictjava/test.yml
new file mode 100644
index 00000000..8cb29c4e
--- /dev/null
+++ b/tests/modules/vardictjava/test.yml
@@ -0,0 +1,9 @@
+- name: vardictjava test_vardictjava
+  command: nextflow run tests/modules/vardictjava -entry test_vardictjava -c tests/config/nextflow.config
+  tags:
+    - vardictjava
+  files:
+    - path: output/vardictjava/test.vcf.gz
+      md5sum: 3f1f227afc532bddeb58f16fd3013fc8
+    - path: output/vardictjava/versions.yml
+      md5sum: 9b62c431a4f2680412b61c7071bdb1cd