- add test case to validate the tags transformer

__tests__/tags.test.ts

@@ -1,4 +1,5 @@
-import {filterTags, prepareAndSortTags, TagInfo} from '../src/pr-collector/tags'
+import { validateTransformer } from '../src/pr-collector/regexUtils'
+import {filterTags, prepareAndSortTags, TagInfo, transformTags} from '../src/pr-collector/tags'
 
 jest.setTimeout(180000)
 
@@ -145,3 +146,36 @@ it('Should filter tags correctly using the regex (inverse)', async () => {
 
   expect(filtered).toStrictEqual(`0.1.0-b01,1.0.0,1.0.0-a01,2.0.0,10.1.0,20.0.2`)
 })
+
+
+it('Should transform tags correctly using the regex', async () => {
+  const tags: TagInfo[] = [
+    {name: 'api-0.0.1', commit: ''},
+    {name: 'api-0.0.1-rc01', commit: ''},
+    {name: 'config-0.1.0', commit: ''},
+    {name: '0.1.0-b01', commit: ''},
+    {name: '2.0.0', commit: ''},
+    {name: '10.1.0', commit: ''},
+    {name: 'api-10.1.0-2', commit: ''},
+    {name: '20.0.2', commit: ''}
+  ]
+
+  const tagResolver = {
+    method: 'non-existing-method',
+    transformer: {
+      pattern: '(api\-)?(.+)',
+      target: "$2"
+    }
+  }
+
+  const transformer = validateTransformer(tagResolver.transformer)
+  if(transformer != null) {
+    const transformed = transformTags(tags, transformer)
+      .map(function (tag) {
+        return tag.name
+      })
+      .join(',')
+
+    expect(transformed).toStrictEqual(`0.0.1,0.0.1-rc01,config-0.1.0,0.1.0-b01,2.0.0,10.1.0,10.1.0-2,20.0.2`)
+  }
+})

src/pr-collector/tags.ts

@@ -211,7 +211,7 @@ export function filterTags(tags: TagInfo[], tagResolver: TagResolver): TagInfo[]
 /**
  * Helper function to transform the tag name given the transformer
  */
-function transformTags(tags: TagInfo[], transformer: RegexTransformer): TagInfo[] {
+export function transformTags(tags: TagInfo[], transformer: RegexTransformer): TagInfo[] {
   return tags.map(function (tag) {
     if (transformer.pattern) {
       const transformedName = tag.name.replace(transformer.pattern, transformer.target)