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node_modules/mocha/lib/reporters/tap.js

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+'use strict';
+/**
+ * @module TAP
+ */
+/**
+ * Module dependencies.
+ */
+
+var util = require('util');
+var Base = require('./base');
+var constants = require('../runner').constants;
+var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
+var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;
+var EVENT_RUN_BEGIN = constants.EVENT_RUN_BEGIN;
+var EVENT_RUN_END = constants.EVENT_RUN_END;
+var EVENT_TEST_PENDING = constants.EVENT_TEST_PENDING;
+var EVENT_TEST_END = constants.EVENT_TEST_END;
+var inherits = require('../utils').inherits;
+var sprintf = util.format;
+
+/**
+ * Expose `TAP`.
+ */
+
+exports = module.exports = TAP;
+
+/**
+ * Constructs a new `TAP` reporter instance.
+ *
+ * @public
+ * @class
+ * @memberof Mocha.reporters
+ * @extends Mocha.reporters.Base
+ * @param {Runner} runner - Instance triggers reporter actions.
+ * @param {Object} [options] - runner options
+ */
+function TAP(runner, options) {
+  Base.call(this, runner, options);
+
+  var self = this;
+  var n = 1;
+
+  var tapVersion = '12';
+  if (options && options.reporterOptions) {
+    if (options.reporterOptions.tapVersion) {
+      tapVersion = options.reporterOptions.tapVersion.toString();
+    }
+  }
+
+  this._producer = createProducer(tapVersion);
+
+  runner.once(EVENT_RUN_BEGIN, function() {
+    self._producer.writeVersion();
+  });
+
+  runner.on(EVENT_TEST_END, function() {
+    ++n;
+  });
+
+  runner.on(EVENT_TEST_PENDING, function(test) {
+    self._producer.writePending(n, test);
+  });
+
+  runner.on(EVENT_TEST_PASS, function(test) {
+    self._producer.writePass(n, test);
+  });
+
+  runner.on(EVENT_TEST_FAIL, function(test, err) {
+    self._producer.writeFail(n, test, err);
+  });
+
+  runner.once(EVENT_RUN_END, function() {
+    self._producer.writeEpilogue(runner.stats);
+  });
+}
+
+/**
+ * Inherit from `Base.prototype`.
+ */
+inherits(TAP, Base);
+
+/**
+ * Returns a TAP-safe title of `test`.
+ *
+ * @private
+ * @param {Test} test - Test instance.
+ * @return {String} title with any hash character removed
+ */
+function title(test) {
+  return test.fullTitle().replace(/#/g, '');
+}
+
+/**
+ * Writes newline-terminated formatted string to reporter output stream.
+ *
+ * @private
+ * @param {string} format - `printf`-like format string
+ * @param {...*} [varArgs] - Format string arguments
+ */
+function println(format, varArgs) {
+  var vargs = Array.from(arguments);
+  vargs[0] += '\n';
+  process.stdout.write(sprintf.apply(null, vargs));
+}
+
+/**
+ * Returns a `tapVersion`-appropriate TAP producer instance, if possible.
+ *
+ * @private
+ * @param {string} tapVersion - Version of TAP specification to produce.
+ * @returns {TAPProducer} specification-appropriate instance
+ * @throws {Error} if specification version has no associated producer.
+ */
+function createProducer(tapVersion) {
+  var producers = {
+    '12': new TAP12Producer(),
+    '13': new TAP13Producer()
+  };
+  var producer = producers[tapVersion];
+
+  if (!producer) {
+    throw new Error(
+      'invalid or unsupported TAP version: ' + JSON.stringify(tapVersion)
+    );
+  }
+
+  return producer;
+}
+
+/**
+ * @summary
+ * Constructs a new TAPProducer.
+ *
+ * @description
+ * <em>Only</em> to be used as an abstract base class.
+ *
+ * @private
+ * @constructor
+ */
+function TAPProducer() {}
+
+/**
+ * Writes the TAP version to reporter output stream.
+ *
+ * @abstract
+ */
+TAPProducer.prototype.writeVersion = function() {};
+
+/**
+ * Writes the plan to reporter output stream.
+ *
+ * @abstract
+ * @param {number} ntests - Number of tests that are planned to run.
+ */
+TAPProducer.prototype.writePlan = function(ntests) {
+  println('%d..%d', 1, ntests);
+};
+
+/**
+ * Writes that test passed to reporter output stream.
+ *
+ * @abstract
+ * @param {number} n - Index of test that passed.
+ * @param {Test} test - Instance containing test information.
+ */
+TAPProducer.prototype.writePass = function(n, test) {
+  println('ok %d %s', n, title(test));
+};
+
+/**
+ * Writes that test was skipped to reporter output stream.
+ *
+ * @abstract
+ * @param {number} n - Index of test that was skipped.
+ * @param {Test} test - Instance containing test information.
+ */
+TAPProducer.prototype.writePending = function(n, test) {
+  println('ok %d %s # SKIP -', n, title(test));
+};
+
+/**
+ * Writes that test failed to reporter output stream.
+ *
+ * @abstract
+ * @param {number} n - Index of test that failed.
+ * @param {Test} test - Instance containing test information.
+ * @param {Error} err - Reason the test failed.
+ */
+TAPProducer.prototype.writeFail = function(n, test, err) {
+  println('not ok %d %s', n, title(test));
+};
+
+/**
+ * Writes the summary epilogue to reporter output stream.
+ *
+ * @abstract
+ * @param {Object} stats - Object containing run statistics.
+ */
+TAPProducer.prototype.writeEpilogue = function(stats) {
+  // :TBD: Why is this not counting pending tests?
+  println('# tests ' + (stats.passes + stats.failures));
+  println('# pass ' + stats.passes);
+  // :TBD: Why are we not showing pending results?
+  println('# fail ' + stats.failures);
+  this.writePlan(stats.passes + stats.failures + stats.pending);
+};
+
+/**
+ * @summary
+ * Constructs a new TAP12Producer.
+ *
+ * @description
+ * Produces output conforming to the TAP12 specification.
+ *
+ * @private
+ * @constructor
+ * @extends TAPProducer
+ * @see {@link https://testanything.org/tap-specification.html|Specification}
+ */
+function TAP12Producer() {
+  /**
+   * Writes that test failed to reporter output stream, with error formatting.
+   * @override
+   */
+  this.writeFail = function(n, test, err) {
+    TAPProducer.prototype.writeFail.call(this, n, test, err);
+    if (err.message) {
+      println(err.message.replace(/^/gm, '  '));
+    }
+    if (err.stack) {
+      println(err.stack.replace(/^/gm, '  '));
+    }
+  };
+}
+
+/**
+ * Inherit from `TAPProducer.prototype`.
+ */
+inherits(TAP12Producer, TAPProducer);
+
+/**
+ * @summary
+ * Constructs a new TAP13Producer.
+ *
+ * @description
+ * Produces output conforming to the TAP13 specification.
+ *
+ * @private
+ * @constructor
+ * @extends TAPProducer
+ * @see {@link https://testanything.org/tap-version-13-specification.html|Specification}
+ */
+function TAP13Producer() {
+  /**
+   * Writes the TAP version to reporter output stream.
+   * @override
+   */
+  this.writeVersion = function() {
+    println('TAP version 13');
+  };
+
+  /**
+   * Writes that test failed to reporter output stream, with error formatting.
+   * @override
+   */
+  this.writeFail = function(n, test, err) {
+    TAPProducer.prototype.writeFail.call(this, n, test, err);
+    var emitYamlBlock = err.message != null || err.stack != null;
+    if (emitYamlBlock) {
+      println(indent(1) + '---');
+      if (err.message) {
+        println(indent(2) + 'message: |-');
+        println(err.message.replace(/^/gm, indent(3)));
+      }
+      if (err.stack) {
+        println(indent(2) + 'stack: |-');
+        println(err.stack.replace(/^/gm, indent(3)));
+      }
+      println(indent(1) + '...');
+    }
+  };
+
+  function indent(level) {
+    return Array(level + 1).join('  ');
+  }
+}
+
+/**
+ * Inherit from `TAPProducer.prototype`.
+ */
+inherits(TAP13Producer, TAPProducer);
+
+TAP.description = 'TAP-compatible output';