improve tests

__tests__/filter.test.ts

@@ -11,6 +11,39 @@ jest.mock('@actions/core', () => ({
   endGroup: jest.fn()
 }))
 
+describe('set output post filtering', () => {
+  test('correctly sets output', () => {
+    const yaml = `
+    backend:
+      - '!(**/*.tsx|**/*.less)'
+    `
+    const filter = new Filter(yaml)
+    const files = modified(['config/settings.yml'])
+    const match = filter.match(files)
+    exportResults(match, 'none')
+
+    expect(core.setOutput).toHaveBeenCalledWith('changes', '["backend"]')
+  })
+  test('correctly filters out shared from output', () => {
+    const yaml = `
+    shared: &shared
+      - common/**/*
+      - config/**/*
+    src:
+      - *shared
+      - src/**/*
+    backend:
+      - '!(**/*.tsx|**/*.less)'
+    `
+    const filter = new Filter(yaml)
+    const files = modified(['config/settings.yml'])
+    const match = filter.match(files)
+    exportResults(match, 'none')
+
+    expect(core.setOutput).toHaveBeenCalledWith('changes', '["src","backend"]')
+  })
+})
+
 describe('yaml filter parsing tests', () => {
   test('throws if yaml is not a dictionary', () => {
     const yaml = 'not a dictionary'
@@ -170,9 +203,6 @@ describe('matching tests', () => {
     const filter = new Filter(yaml)
     const files = modified(['config/settings.yml'])
     const match = filter.match(files)
-    exportResults(match, 'none')
-
-    expect(core.setOutput).toHaveBeenCalledWith('changes', '["src"]')
     expect(match.src).toEqual(files)
   })
 })

src/main.ts

@@ -255,6 +255,7 @@ export function exportResults(results: FilterResults, format: ExportFormat): voi
 
   if (results['changes'] === undefined) {
     const filteredShared = changes.filter(change => change !== 'shared')
+    console.log({changes, filteredShared})
     const changesJson = JSON.stringify(filteredShared)
     core.info(`Changes output set to ${changesJson}`)
     core.setOutput('changes', changesJson)