chore: cucumber refactor and capture steps

package.json

@@ -1,6 +1,6 @@
 {
   "name": "test-results-parser",
-  "version": "0.1.19",
+  "version": "0.1.20",
   "description": "Parse test results from JUnit, TestNG, xUnit, cucumber and many more",
   "main": "src/index.js",
   "types": "./src/index.d.ts",

src/parsers/base.parser.js

@@ -0,0 +1,48 @@
+const { unescape } = require('html-escaper');
+
+
+class BaseParser {
+
+  /**
+   * @param {string} value
+   * @returns
+   */
+  parseText(value) {
+    return value ? unescape(value) : value;
+  }
+
+  /**
+   *
+   * @param {string[]} parent_tags
+   * @param {string[]} child_tags
+   */
+  mergeTags(parent_tags, child_tags) {
+    if (!parent_tags) {
+      parent_tags = [];
+    }
+    if (!child_tags) {
+      child_tags = [];
+    }
+    for (const tag of parent_tags) {
+      if (child_tags.indexOf(tag) === -1) {
+        child_tags.push(tag);
+      }
+    }
+  }
+
+  mergeMetadata(parent_metadata, child_metadata) {
+    if (!parent_metadata) {
+      parent_metadata = {};
+    }
+    if (!child_metadata) {
+      child_metadata = {};
+    }
+    for (const [key, value] of Object.entries(parent_metadata)) {
+      if (!child_metadata[key]) {
+        child_metadata[key] = value;
+      }
+    }
+  }
+}
+
+module.exports = { BaseParser }

src/parsers/cucumber.js

@@ -3,139 +3,155 @@ const { resolveFilePath } = require('../helpers/helper');
 const TestResult = require('../models/TestResult');
 const TestSuite = require('../models/TestSuite');
 const TestCase = require('../models/TestCase');
+const TestStep = require('../models/TestStep');
+const { BaseParser } = require('./base.parser');
 
-function getTestCase(rawCase) {
-  const test_case = new TestCase();
-  test_case.name = rawCase["name"];
-  test_case.duration = rawCase["duration"];
-  setMetaData(rawCase, test_case);
-  if (rawCase.state && rawCase.state === "failed") {
-    test_case.status = 'FAIL';
-    setErrorAndStackTrace(test_case, rawCase.errorStack);
+class CucumberParser extends BaseParser {
+
+  constructor(file) {
+    super();
+    this.result = new TestResult();
+    this.raw_result = this.#getCucumberResult(file);
   }
-  else {
-    test_case.status = 'PASS';
+
+  /**
+   * @returns {import('./cucumber.result').CucumberJsonResult}
+   */
+  #getCucumberResult(file) {
+    return require(resolveFilePath(file));
   }
-  return test_case;
-}
 
-/**
- * @param {TestCase} test_case
- * @param {string?} message
- */
-function setErrorAndStackTrace(test_case, message) {
-  if (message) {
-    const stack_trace_start_index = message.indexOf('    at ');
-    if (stack_trace_start_index) {
-      const failure = message.slice(0, stack_trace_start_index);
-      const stack_trace = message.slice(stack_trace_start_index);
-      test_case.setFailure(failure);
-      test_case.stack_trace = stack_trace;
-    } else {
-      test_case.setFailure(message);
-    }
+  parse() {
+    this.#setTestResults();
+    return this.result;
   }
-}
 
-/**
- *
- * @param {import('./cucumber.result').CucumberElement} element
- * @param {TestCase | TestSuite} test_element
- */
-function setMetaData(element, test_element) {
-  const tags = element.tags;
-  if (tags && tags.length > 0) {
-    for (const tag of tags) {
-      if (tag["name"].includes("=")) {
-        const [name, value] = tag["name"].substring(1).split("=");
-        test_element.metadata[name] = value;
-      } else {
-        test_element.tags.push(tag["name"]);
+  #setTestResults() {
+    this.result.name = '';
+    this.#setTestSuites();
+    this.result.status = this.result.suites.every(suite => suite.status === "PASS") ? "PASS" : "FAIL";
+    this.result.total = this.result.suites.reduce((total, suite) => total + suite.total, 0);
+    this.result.passed = this.result.suites.reduce((total, suite) => total + suite.passed, 0);
+    this.result.failed = this.result.suites.reduce((total, suite) => total + suite.failed, 0);
+    this.result.duration = this.result.suites.reduce((total, suite) => total + suite.duration, 0);
+    this.result.duration = parseFloat(this.result.duration.toFixed(2));
+  }
+
+  #setTestSuites() {
+    for (const feature of this.raw_result) {
+      const test_suite = new TestSuite();
+      test_suite.name = feature.name;
+      test_suite.total = feature.elements.length;
+      for (const scenario of feature.elements) {
+        test_suite.cases.push(this.#getTestCase(scenario));
+      }
+      test_suite.total = test_suite.cases.length;
+      test_suite.passed = test_suite.cases.filter(_ => _.status === "PASS").length;
+      test_suite.failed = test_suite.cases.filter(_ => _.status === "FAIL").length;
+      test_suite.duration = test_suite.cases.reduce((total, _) => total + _.duration, 0);
+      test_suite.duration = parseFloat(test_suite.duration.toFixed(2));
+      test_suite.status = test_suite.total === test_suite.passed ? 'PASS' : 'FAIL';
+      const { tags, metadata } = this.#getTagsAndMetadata(feature.tags);
+      test_suite.tags = tags;
+      test_suite.metadata = metadata;
+      for (const test_case of test_suite.cases) {
+        this.mergeTags(test_suite.tags, test_case.tags);
+        this.mergeMetadata(test_suite.metadata, test_case.metadata);
       }
+
+      this.result.suites.push(test_suite);
     }
   }
-}
 
-function getTestSuite(rawSuite) {
-  const suite = new TestSuite();
-  suite.name = rawSuite["name"];
-  suite.total = rawSuite["tests"];
-  suite.passed = rawSuite["passes"];
-  suite.failed = rawSuite["failures"];
-  suite.duration = rawSuite["duration"];
-  suite.status = suite.total === suite.passed ? 'PASS' : 'FAIL';
-  setMetaData(rawSuite, suite);
-  const raw_test_cases = rawSuite.elements;
-  if (raw_test_cases) {
-    for (let i = 0; i < raw_test_cases.length; i++) {
-      suite.cases.push(getTestCase(raw_test_cases[i]));
+  /**
+   *
+   * @param {import('./cucumber.result').CucumberElement} scenario
+   */
+  #getTestCase(scenario) {
+    const test_case = new TestCase();
+    test_case.name = scenario.name;
+    for (const step of scenario.steps) {
+      test_case.steps.push(this.#getTestStep(step));
+    }
+    test_case.total = test_case.steps.length;
+    test_case.passed = test_case.steps.filter(step => step.status === "PASS").length;
+    test_case.failed = test_case.steps.filter(step => step.status === "FAIL").length;
+    test_case.duration = test_case.steps.reduce((total, _) => total + _.duration, 0);
+    test_case.duration = parseFloat((test_case.duration).toFixed(2));
+    test_case.status = test_case.total === test_case.passed ? 'PASS' : 'FAIL';
+    if (test_case.status === "FAIL") {
+      const failed_step = test_case.steps.find(step => step.status === "FAIL");
+      test_case.failure = failed_step.failure;
+      test_case.stack_trace = failed_step.stack_trace
     }
+    const { tags, metadata } = this.#getTagsAndMetadata(scenario.tags);
+    test_case.tags = tags;
+    test_case.metadata = metadata;
+    return test_case;
   }
-  return suite;
-}
 
-/**
- * @param {import("./cucumber.result").CucumberJsonResult} json
- */
-function getTestResult(json) {
-  const result = new TestResult();
-  const { stats, suites } = preprocess(json);
-  result.name = suites["name"] || "";
-  result.total = stats["tests"];
-  result.passed = stats["passes"];
-  result.failed = stats["failures"];
-  const errors = stats["errors"];
-  if (errors) {
-    result.errors = errors;
+  /**
+   *
+   * @param {import('./cucumber.result').CucumberStep} step
+   */
+  #getTestStep(step) {
+    const test_step = new TestStep();
+    test_step.name = step.name;
+    test_step.status = step.result.status === "passed" ? "PASS" : "FAIL";
+    test_step.duration = step.result.duration ? parseFloat((step.result.duration / 1000000).toFixed(2)) : 0;
+    if (test_step.status === "FAIL") {
+      const { failure, stack_trace } = this.#getFailureAndStackTrace(step.result.error_message);
+      test_step.failure = failure;
+      test_step.stack_trace = stack_trace;
+    }
+    return test_step;
   }
-  result.duration = stats["duration"] || 0;
 
-  if (suites.length > 0) {
-    for (let i = 0; i < suites.length; i++) {
-      result.suites.push(getTestSuite(suites[i]));
+  /**
+   *
+   * @param {string} message
+   */
+  #getFailureAndStackTrace(message) {
+    if (message) {
+      const stack_trace_start_index = message.indexOf('    at ');
+      if (stack_trace_start_index) {
+        const failure = this.parseText(message.slice(0, stack_trace_start_index));
+        const stack_trace = message.slice(stack_trace_start_index);
+        return { failure, stack_trace };
+      } else {
+        return { failure: message, stack_trace: '' };
+      }
     }
+    return { failure: '', stack_trace: '' };
   }
-  result.status = result.total === result.passed ? 'PASS' : 'FAIL';
-  return result;
-}
-
-/**
- * Function to format the raw json report
- * @param {import("./cucumber.result").CucumberJsonResult} json
- * @returns formatted json object
- */
-function preprocess(json) {
-  const formattedResult = { stats: {}, suites: [] };
 
-  json.forEach(testSuite => {
-    testSuite.elements.forEach(testCase => {
-      testCase.state = testCase.steps.every(step => step.result.status === "passed") ? "passed" : "failed";
-      testCase.duration = testCase.steps.map(step => step.result.duration).reduce((total, currVal) => total + currVal, 0) / 1000000;
-      testCase.duration = parseFloat(testCase.duration.toFixed(2));
-      testCase.errorStack = testCase.steps.filter(step => step.result.status === "failed").map(step => step.result.error_message)[0] || "";
-    })
-    testSuite.tests = testSuite.elements.length;
-
-    if (testSuite.tests) {
-      testSuite.failures = testSuite.elements.filter(testCase => testCase.state === "failed").length;
-      testSuite.passes = testSuite.elements.filter(testCase => testCase.state === "passed").length;
-      testSuite.duration = testSuite.elements.map(testCase => testCase.duration).reduce((total, currVal) => total + currVal, 0);
+  /**
+   *
+   * @param {import('./cucumber.result').CucumberTag[]} cucumber_tags
+   */
+  #getTagsAndMetadata(cucumber_tags) {
+    const metadata = {};
+    const tags = [];
+    if (cucumber_tags) {
+      for (const tag of cucumber_tags) {
+        if (tag["name"].includes("=")) {
+          const [name, value] = tag["name"].substring(1).split("=");
+          metadata[name] = value;
+        } else {
+          tags.push(tag["name"]);
+        }
+      }
     }
-    formattedResult.suites.push(testSuite);
-  });
-
-  formattedResult.stats.suites = formattedResult.suites.length;
-  for (const statsType of ["tests", "passes", "failures", "errors", "duration"]) {
-    formattedResult.stats[statsType] = formattedResult.suites.map(testSuite => testSuite[statsType]).reduce((total, currVal) => total + currVal, 0) || 0;
+    return { tags, metadata };
   }
-  return formattedResult;
+
 }
 
 function parse(file) {
-  const json = require(resolveFilePath(file));
-  return getTestResult(json);
+  const parser = new CucumberParser(file);
+  return parser.parse();
 }
 
 module.exports = {
   parse
-}
+}