Add LCOV Support

__tests__/__outputs__/lcov-report-results.md

@@ -0,0 +1,21 @@
+![Tests failed](https://img.shields.io/badge/tests-4%20passed%2C%202%20failed-critical)
+## ❌ <a id="user-content-r0" href="#r0">fixtures/lcov.info</a>
+**6** tests were completed in **0ms** with **4** passed, **2** failed and **0** skipped.
+|Test suite|Passed|Failed|Skipped|Time|
+|:---|---:|---:|---:|---:|
+|[src/services/notifier/NotifierService.js](#r0s0)|2✅|1❌||0ms|
+|[src/services/notifier/providers/DiscordNotifierProvider.js](#r0s1)|2✅|1❌||0ms|
+### ❌ <a id="user-content-r0s0" href="#r0s0">src/services/notifier/NotifierService.js</a>
+```
+src/services/notifier/NotifierService.js
+  ✅ lines 100% (21/21)
+  ✅ functions 100% (10/10)
+  ❌ branches 50% (3/6)
+```
+### ❌ <a id="user-content-r0s1" href="#r0s1">src/services/notifier/providers/DiscordNotifierProvider.js</a>
+```
+src/services/notifier/providers/DiscordNotifierProvider.js
+  ✅ lines 100% (17/17)
+  ✅ functions 100% (3/3)
+  ❌ branches 75% (3/4)
+```

__tests__/__snapshots__/lcov.test.ts.snap

@@ -0,0 +1,62 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`lcov report coverage report from facebook/jest test results matches snapshot 1`] = `
+TestRunResult {
+  "path": "fixtures/lcov.info",
+  "suites": [
+    TestSuiteResult {
+      "groups": [
+        TestGroupResult {
+          "name": "src/services/notifier/NotifierService.js",
+          "tests": [
+            {
+              "name": "lines 100% (21/21)",
+              "result": "success",
+              "time": 0,
+            },
+            {
+              "name": "functions 100% (10/10)",
+              "result": "success",
+              "time": 0,
+            },
+            {
+              "name": "branches 50% (3/6)",
+              "result": "failed",
+              "time": 0,
+            },
+          ],
+        },
+      ],
+      "name": "src/services/notifier/NotifierService.js",
+      "totalTime": undefined,
+    },
+    TestSuiteResult {
+      "groups": [
+        TestGroupResult {
+          "name": "src/services/notifier/providers/DiscordNotifierProvider.js",
+          "tests": [
+            {
+              "name": "lines 100% (17/17)",
+              "result": "success",
+              "time": 0,
+            },
+            {
+              "name": "functions 100% (3/3)",
+              "result": "success",
+              "time": 0,
+            },
+            {
+              "name": "branches 75% (3/4)",
+              "result": "failed",
+              "time": 0,
+            },
+          ],
+        },
+      ],
+      "name": "src/services/notifier/providers/DiscordNotifierProvider.js",
+      "totalTime": undefined,
+    },
+  ],
+  "totalTime": undefined,
+}
+`;

__tests__/fixtures/lcov.info

@@ -0,0 +1,92 @@
+TN:
+SF:src/services/notifier/NotifierService.js
+FN:9,(anonymous_0)
+FN:10,(anonymous_1)
+FN:26,(anonymous_2)
+FN:27,(anonymous_3)
+FN:29,(anonymous_4)
+FN:30,(anonymous_5)
+FN:46,(anonymous_6)
+FN:47,(anonymous_7)
+FN:48,(anonymous_8)
+FN:49,(anonymous_9)
+FNF:10
+FNH:10
+FNDA:1,(anonymous_0)
+FNDA:1,(anonymous_1)
+FNDA:1,(anonymous_2)
+FNDA:3,(anonymous_3)
+FNDA:3,(anonymous_4)
+FNDA:3,(anonymous_5)
+FNDA:1,(anonymous_6)
+FNDA:3,(anonymous_7)
+FNDA:3,(anonymous_8)
+FNDA:3,(anonymous_9)
+DA:9,1
+DA:10,1
+DA:11,1
+DA:13,1
+DA:14,1
+DA:26,1
+DA:27,3
+DA:29,1
+DA:30,3
+DA:31,3
+DA:33,3
+DA:34,3
+DA:46,1
+DA:47,3
+DA:48,3
+DA:51,3
+DA:53,3
+DA:54,3
+DA:58,3
+DA:61,1
+DA:64,1
+LF:21
+LH:21
+BRDA:11,0,0,1
+BRDA:11,0,1,0
+BRDA:31,1,0,3
+BRDA:31,1,1,0
+BRDA:51,2,0,3
+BRDA:51,2,1,0
+BRF:6
+BRH:3
+end_of_record
+TN:
+SF:src/services/notifier/providers/DiscordNotifierProvider.js
+FN:12,(anonymous_0)
+FN:33,(anonymous_1)
+FN:51,(anonymous_2)
+FNF:3
+FNH:3
+FNDA:1,(anonymous_0)
+FNDA:1,(anonymous_1)
+FNDA:1,(anonymous_2)
+DA:3,1
+DA:12,1
+DA:13,1
+DA:14,1
+DA:22,1
+DA:23,1
+DA:33,1
+DA:34,1
+DA:35,1
+DA:40,1
+DA:41,1
+DA:51,1
+DA:52,1
+DA:53,1
+DA:58,1
+DA:59,1
+DA:62,1
+LF:17
+LH:17
+BRDA:18,0,0,0
+BRDA:18,0,1,1
+BRDA:20,1,0,1
+BRDA:20,1,1,1
+BRF:4
+BRH:3
+end_of_record

__tests__/lcov.test.ts

@@ -0,0 +1,23 @@
+import * as fs from 'fs'
+import * as path from 'path'
+
+import {getReport} from '../src/report/get-report'
+import {normalizeFilePath} from '../src/utils/path-utils'
+import {LcovParser} from '../src/parsers/lcov/lcov-parser'
+
+describe('lcov report coverage', () => {
+  it('report from facebook/jest test results matches snapshot', async () => {
+    const fixturePath = path.join(__dirname, 'fixtures', 'lcov.info')
+    const outputPath = path.join(__dirname, '__outputs__', 'lcov-report-results.md')
+    const filePath = normalizeFilePath(path.relative(__dirname, fixturePath))
+    const fileContent = fs.readFileSync(fixturePath, {encoding: 'utf8'})
+
+    const parser = new LcovParser({parseErrors: true, trackedFiles: []})
+    const result = await parser.parse(filePath, fileContent)
+    expect(result).toMatchSnapshot()
+
+    const report = getReport([result])
+    fs.mkdirSync(path.dirname(outputPath), {recursive: true})
+    fs.writeFileSync(outputPath, report)
+  })
+})

action.yml

@@ -32,6 +32,7 @@ inputs:
         - jest-junit
         - mocha-json
         - swift-xunit
+        - lcov
     required: true
   list-suites:
     description: |