Add support for rspec

src/parsers/rspec-json/rspec-json-parser.ts

@@ -0,0 +1,113 @@
+import { Console } from 'console'
+import {ParseOptions, TestParser} from '../../test-parser'
+import {
+  TestCaseError,
+  TestCaseResult,
+  TestExecutionResult,
+  TestGroupResult,
+  TestRunResult,
+  TestSuiteResult
+} from '../../test-results'
+import {RspecJson, RspecExample} from './rspec-json-types'
+
+export class RspecJsonParser implements TestParser {
+  assumedWorkDir: string | undefined
+
+  constructor(readonly options: ParseOptions) {}
+
+  async parse(path: string, content: string): Promise<TestRunResult> {
+    const mocha = this.getRspecJson(path, content)
+    const result = this.getTestRunResult(path, mocha)
+    result.sort(true)
+    return Promise.resolve(result)
+  }
+
+  private getRspecJson(path: string, content: string): RspecJson {
+    try {
+      return JSON.parse(content)
+    } catch (e) {
+      throw new Error(`Invalid JSON at ${path}\n\n${e}`)
+    }
+  }
+
+  private getTestRunResult(resultsPath: string, rspec: RspecJson): TestRunResult {
+    const suitesMap: {[path: string]: TestSuiteResult} = {}
+
+    const getSuite = (test: RspecExample): TestSuiteResult => {
+      const path = test.file_path
+      return suitesMap[path] ?? (suitesMap[path] = new TestSuiteResult(path, []))
+    }
+
+    for (const test of rspec.examples) {
+      const suite = getSuite(test)
+      if (test.status === 'failed') {
+        this.processTest(suite, test, 'failed')
+      } else if (test.status === 'passed') {
+        this.processTest(suite, test, 'success')
+      } else if (test.status === 'pending') {
+        this.processTest(suite, test, 'skipped')
+      }
+    }
+
+    const suites = Object.values(suitesMap)
+    return new TestRunResult(resultsPath, suites, rspec.summary.duration)
+  }
+
+  private processTest(suite: TestSuiteResult, test: RspecExample, result: TestExecutionResult): void {
+    const groupName =
+      test.full_description !== test.description
+        ? test.full_description.substr(0, test.full_description.length - test.description.length).trimEnd()
+        : null
+
+    let group = suite.groups.find(grp => grp.name === groupName)
+    if (group === undefined) {
+      group = new TestGroupResult(groupName, [])
+      suite.groups.push(group)
+    }
+
+    const error = this.getTestCaseError(test)
+    const testCase = new TestCaseResult(test.full_description, result, test.run_time ?? 0, error)
+    group.tests.push(testCase)
+  }
+
+  private getTestCaseError(test: RspecExample): TestCaseError | undefined {
+    const backtrace = test.exception?.backtrace
+    const message = test.exception?.message
+    if (backtrace === undefined) {
+      return undefined
+    }
+
+    let path
+    let line
+    const details = backtrace.join('\n')
+
+    const src = this.getExceptionSource(backtrace)
+    if (src) {
+      path = src.path
+      line = src.line
+    }
+
+    return {
+      path,
+      line,
+      message,
+      details
+    }
+  }
+
+  private getExceptionSource(backtrace: string[]): {path: string; line: number} | undefined {
+    const re = /^(.*?):(\d+):/
+
+    for (const str of backtrace) {
+      const match = str.match(re)
+      if (match !== null) {
+        const [_, path, lineStr] = match
+        if (path.startsWith('./')) {
+          const line = parseInt(lineStr)
+          return {path, line}
+        }
+      }
+    }
+    return undefined
+  }
+}