tap.js
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/**
* @fileoverview TAP reporter
* @author Jonathan Kingston
*/
"use strict";
var yaml = require("js-yaml");
//------------------------------------------------------------------------------
// Helper Functions
//------------------------------------------------------------------------------
/**
* Returns a canonical error level string based upon the error message passed in.
* @param {object} message Individual error message provided by eslint
* @returns {String} Error level string
*/
function getMessageType(message) {
if (message.fatal || message.severity === 2) {
return "error";
} else {
return "warning";
}
}
/**
* Takes in a JavaScript object and outputs a TAP diagnostics string
* @param {object} diagnostic JavaScript object to be embedded as YAML into output.
* @returns {string} diagnostics string with YAML embedded - TAP version 13 compliant
*/
function outputDiagnostics(diagnostic) {
var prefix = " ";
var output = prefix + "---\n";
output += prefix + yaml.safeDump(diagnostic).split("\n").join("\n" + prefix);
output += "...\n";
return output;
}
//------------------------------------------------------------------------------
// Public Interface
//------------------------------------------------------------------------------
module.exports = function(results) {
var output = "TAP version 13\n1.." + results.length + "\n";
results.forEach(function(result, id) {
var messages = result.messages;
var testResult = "ok";
var diagnostics = {};
if (messages.length > 0) {
testResult = "not ok";
messages.forEach(function(message) {
var diagnostic = {
message: message.message,
severity: getMessageType(message),
data: {
line: message.line || 0,
column: message.column || 0,
ruleId: message.ruleId || ""
}
};
// If we have multiple messages place them under a messages key
// The first error will be logged as message key
// This is to adhere to TAP 13 loosely defined specification of having a message key
if ("message" in diagnostics) {
diagnostics.messages = [diagnostic];
} else {
diagnostics = diagnostic;
}
});
}
output += testResult + " " + (id + 1) + " - " + result.filePath + "\n";
// If we have an error include diagnostics
if (messages.length > 0) {
output += outputDiagnostics(diagnostics);
}
});
return output;
};