Add describe-assets option

.github/workflows/test.yml

@@ -54,3 +54,17 @@ jobs:
           base-stats-json-path: ./__tests__/__mocks__/old-stats-assets.json
           github-token: ${{ secrets.GITHUB_TOKEN }}
           title: No changes
+      - uses: ./
+        with:
+          current-stats-json-path: ./__tests__/__mocks__/new-stats-assets.json
+          base-stats-json-path: ./__tests__/__mocks__/old-stats-assets.json
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          title: 'With describe-assets: \'none\''
+          describe-assets: none
+      - uses: ./
+        with:
+          current-stats-json-path: ./__tests__/__mocks__/old-stats-assets.json
+          base-stats-json-path: ./__tests__/__mocks__/old-stats-assets.json
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          title: 'With describe-assets: \'changed-only\''
+          describe-assets: changed-only

README.md

@@ -110,6 +110,8 @@ This action requires the `write` permission for the [`permissions.pull-requests`
 | github-token            | The Github token                                                                                                    | true     | string |
 | title                   | An optional addition to the title, which also helps key comments, useful if running more than 1 copy of this action | false    | string |
 
+| describe-assets         | Option for asset description output. One of "all" (default), "changed-only", or "none". | false    | string |
+
 ## Example PR Comment
 
 https://github.com/github/webpack-bundlesize-compare-action/pull/50#issuecomment-1054919780

__tests__/main.test.ts

@@ -1,15 +1,23 @@
-import {expect, test} from '@jest/globals'
+import {expect, describe, test, beforeAll} from '@jest/globals'
 import {getStatsDiff} from '../src/get-stats-diff'
 import {getChunkModuleDiff} from '../src/get-chunk-module-diff'
 import {
   printAssetTablesByGroup,
   printChunkModulesTable,
   printTotalAssetTable
 } from '../src/print-markdown'
-import {AssetDiff} from '../src/types'
+import {
+  AssetDiff,
+  DescribeAssetsOptions,
+  DescribeAssetsSection,
+  WebpackStatsDiff,
+  describeAssetsSections
+} from '../src/types'
 import {readFile} from 'node:fs/promises'
 import {resolve} from 'node:path'
 import {StatsCompilation} from 'webpack'
+import {getDescribeAssetsOptions} from '../src/main'
+import {fail} from 'node:assert'
 
 async function readJsonFile(path: string): Promise<StatsCompilation> {
   const data = await readFile(resolve(__dirname, path), 'utf8')
@@ -121,3 +129,120 @@ test('does not display module information when it does not exist', async () => {
 
   expect(printChunkModulesTable(statsDiff)).toMatchSnapshot()
 })
+
+describe('printAssetTablesByGroup describes asset sections as requested', () => {
+  // generate all combinations of sections
+  const cases: DescribeAssetsOptions[] = []
+  for (let i = 0; i < Math.pow(2, describeAssetsSections.length); i++) {
+    const options = {} as DescribeAssetsOptions
+    for (let n = 0; n < describeAssetsSections.length; n++) {
+      if ((i >> n) & 1) {
+        options[describeAssetsSections[n]] = true
+      } else {
+        options[describeAssetsSections[n]] = false
+      }
+    }
+    cases.push(options)
+  }
+
+  let statsDiff: WebpackStatsDiff
+  beforeAll(async () => {
+    statsDiff = getStatsDiff(
+      await readJsonFile('./__mocks__/old-stats-assets.json'),
+      await readJsonFile('./__mocks__/new-stats-assets.json')
+    )
+  })
+
+  test.each(cases)(
+    'printAssetTablesByGroup: %j',
+    (options: DescribeAssetsOptions) => {
+      const assetTables = printAssetTablesByGroup(statsDiff, options)
+      for (const [section, included] of Object.entries(options)) {
+        const sectionHeader = `**${section[0].toUpperCase()}${section.slice(
+          1
+        )}**`
+        if (included) {
+          expect(assetTables).toContain(sectionHeader)
+        } else {
+          expect(assetTables).not.toContain(sectionHeader)
+        }
+      }
+      if (Object.entries(options).every(([, included]) => included === false)) {
+        expect(assetTables).toBe('')
+      }
+    }
+  )
+})
+
+describe('getDescribeAssetsOptions', () => {
+  test(`getDescribeAssetsOptions: "all"`, () => {
+    const generatedOptions = getDescribeAssetsOptions('all')
+    for (const section of describeAssetsSections) {
+      expect(generatedOptions[section]).toBe(true)
+    }
+  })
+
+  test(`getDescribeAssetsOptions: "none"`, () => {
+    const generatedOptions = getDescribeAssetsOptions('none')
+    for (const section of describeAssetsSections) {
+      expect(generatedOptions[section]).toBe(false)
+    }
+  })
+
+  test(`getDescribeAssetsOptions: "changed-only"`, () => {
+    const generatedOptions = getDescribeAssetsOptions('changed-only')
+    for (const section of describeAssetsSections) {
+      if (section === 'unchanged') {
+        expect(generatedOptions[section]).toBe(false)
+      } else {
+        expect(generatedOptions[section]).toBe(true)
+      }
+    }
+  })
+
+  test('getDescribeAssetsOptions: handles keyword with spaces', () => {
+    const generatedOptions = getDescribeAssetsOptions('   all  ')
+    for (const section of describeAssetsSections) {
+      expect(generatedOptions[section]).toBe(true)
+    }
+  })
+
+  test('getDescribeAssetsOptions: unsupported option throws', () => {
+    expect(() => getDescribeAssetsOptions('unsupported options')).toThrow()
+  })
+
+  // generate all combinations of sections as string
+  const cases: string[] = []
+  for (let i = 0; i < Math.pow(2, describeAssetsSections.length); i++) {
+    const options: string[] = []
+    for (let n = 0; n < describeAssetsSections.length; n++) {
+      if ((i >> n) & 1) {
+        options.push(describeAssetsSections[n])
+      }
+    }
+    if (options.length > 0) {
+      cases.push(options.join(' '))
+    }
+  }
+
+  test.each(cases)(`getDescribeAssetsOptions: %j`, (optionString: string) => {
+    const generatedOptions = getDescribeAssetsOptions(optionString)
+    const providedOptions = optionString.split(' ')
+    for (const section of providedOptions) {
+      expect(generatedOptions[section as DescribeAssetsSection]).toBe(true)
+    }
+    for (const section of describeAssetsSections.filter(
+      s => !providedOptions.includes(s)
+    )) {
+      expect(generatedOptions[section]).toBe(false)
+    }
+  })
+
+  test('getDescribeAssetsOptions: handles sections with spaces', () => {
+    const optionString = ' added   removed  bigger'
+    const generatedOptions = getDescribeAssetsOptions(optionString)
+    for (const section of describeAssetsSections) {
+      expect(generatedOptions[section]).toBe(optionString.includes(section))
+    }
+  })
+})

action.yml

@@ -13,6 +13,20 @@ inputs:
   title:
     description: 'An optional addition to the title, which also helps key comments, useful if running more than 1 copy of this action'
     required: false
+  describe-assets:
+    description: |
+      Optional specification describing asset changes. May be one of the convenience
+      keywords "all", "none", or "changed-only" (for all except the unchanged section), OR
+      a string of space-separated section names, e.g. "added bigger unchanged", where
+      all sections are:
+        - added
+        - removed
+        - bigger
+        - smaller
+        - unchanged
+      If not provided, "all" is used (equivalent to "added removed bigger smaller unchanged")
+    required: false
+    default: 'all'
 
 runs:
   using: 'node20'