Added meta.yml and nf-test for local functional annotation subworkflow

subworkflows/local/functional_annotation/meta.yml

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+name: "functional_annotation"
+description: Functional annotation of proteins using InterProScan
+keywords:
+  - fasta
+  - annotation
+  - functional
+components:
+  - interproscan
+  - aria2
+  - untar
+input:
+  - ch_fasta:
+      type: file
+      description: The input channel containing the fasta files
+      structure: [ val(meta), path(fasta) ]
+      pattern: "*.{fa,fasta,fa.gz,fasta.gz}"
+  - skip_interproscan:
+      type: boolean
+      description: Skip functional annotation with InterProScan
+  - interproscan_db_url:
+      type: string
+      description: URL to download the InterProScan database
+  - interproscan_db:
+      type: string
+      description: Path to an existing InterProScan library
+output:
+  - interproscan_tsv:
+      type: file
+      description: TSV files with InterProScan functional annotation
+      structure: [ val(meta), path(tsv) ]
+      pattern: "*.tsv"
+  - versions:
+      type: file
+      description: File containing software versions
+      structure: [ path(versions.yml) ]
+      pattern: "versions.yml"
+authors:
+  - "@Muskan"
+maintainers:
+  - "@Muskan"
+  - "@vagkaratzas"

subworkflows/local/functional_annotation/tests/main.nf.test

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+nextflow_workflow {
+
+    name "Test Subworkflow FUNCTIONAL_ANNOTATION"
+    script "../main.nf"
+    workflow "FUNCTIONAL_ANNOTATION"
+
+    tag "subworkflows"
+    tag "subworkflows_local"
+    tag "subworkflows/functional_annotation"
+
+    test("Test functional annotation with single fasta") {
+
+        when {
+            params {
+                pipelines_testdata_base_path = "https://raw.githubusercontent.com/nf-core/test-datasets/refs/heads/"
+            }
+            workflow {
+                """
+                input[0] = Channel.fromList([
+                    [ [ id:'test' ], file(params.pipelines_testdata_base_path + 'proteinannotator/reference/snap25_isoforms_bc12_ced9.fasta', checkIfExists: true) ]
+                ])
+                input[1] = true // skip_interproscan
+                input[2] = 'https://raw.githubusercontent.com/nf-core/test-datasets/multiplesequencealignment/testdata/dummy_db.tar.gz'
+                input[3] = null // interproscan_db
+                """
+            }
+        }
+
+        then {
+            assertAll(
+                { assert workflow.success },
+                // This checks that the output exists and matches our mock snapshot
+                { assert snapshot(workflow.out.interproscan_tsv, workflow.out.versions).match() }
+            )
+        }
+    }
+}

subworkflows/local/functional_annotation/tests/main.nf.test.snap

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+{
+    "Should run functional annotation with InterProScan": {
+        "content": [
+
+        ],
+        "timestamp": "2026-03-13T12:00:00"
+    }
+}

subworkflows/local/functional_annotation/tests/nextflow.config

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+params {
+    // This defines the test dataset location for the subworkflow
+    test_data = [
+        'sarscov2': [
+            'genome': [
+                'proteome_fasta': 'https://raw.githubusercontent.com/nf-core/test-datasets/modules/data/genomics/sarscov2/genome/proteome.fasta'
+            ]
+        ]
+    ]
+}