使用karma-jasmine和istanbul

Question

我正在尝试使用伊斯坦布尔在karma框架中获取我的打字稿代码的代码覆盖率 在karma.conf中包含了typescript文件，并且通过karma typescript-preprocessor，我们能够对typescript代码进行单元测试和代码覆盖，但代码覆盖率报告来自转换的JavaScript代码

如何获取打字稿代码的覆盖率报告？

这是我的karma.conf文件。

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module.exports = function(config) {
  config.set({

    // base path, that will be used to resolve files and exclude
    basePath: '',


    // frameworks to use
    frameworks: ['jasmine'],

    preprocessors: {
        'src/**/*.ts': ['typescript', 'coverage'],
        'test/**/*.ts': ['typescript']
    },
    typescriptPreprocessor: {
        options: {
            sourceMap: false, // (optional) Generates corresponding .map file.
            target: 'ES5', // (optional) Specify ECMAScript target version: 'ES3' (default), or 'ES5'
            module: 'amd', // (optional) Specify module code generation: 'commonjs' or 'amd'
            noImplicitAny: true, // (optional) Warn on expressions and declarations with an implied 'any' type.
            noResolve: false, // (optional) Skip resolution and preprocessing.
            removeComments: true, // (optional) Do not emit comments to output.
            concatenateOutput: false // (optional) Concatenate and emit output to single file. By default true if module option is omited, otherwise false.
        },
        // extra typing definitions to pass to the compiler (globs allowed)
        // transforming the filenames
        transformPath: function (path) {
            return path.replace(/\.ts$/, '.js');
        }

        //options: {
        //    sourceMap: true,
        //}
    },

    // list of files / patterns to load in the browser
    files: [

      'src/**/*.ts',
      'test/**/*.ts'
    ],


    // list of files to exclude
    exclude: [
      
    ],
    // test results reporter to use
    // possible values: 'dots', 'progress', 'junit', 'growl', 'coverage'
    reporters: ['progress','coverage'],


    // web server port
    port: 9876,


    // enable / disable colors in the output (reporters and logs)
    colors: true,


    // level of logging
    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
    logLevel: config.LOG_INFO,


    // enable / disable watching file and executing tests whenever any file changes
    autoWatch: true,


    // Start these browsers, currently available:
    // - Chrome
    // - ChromeCanary
    // - Firefox
    // - Opera (has to be installed with `npm install karma-opera-launcher`)
    // - Safari (only Mac; has to be installed with `npm install karma-safari-launcher`)
    // - PhantomJS
    // - IE (only Windows; has to be installed with `npm install karma-ie-launcher`)
    browsers: ['PhantomJS'],


    // If browser does not capture in given timeout [ms], kill it
    captureTimeout: 60000,


    // Continuous Integration mode
    // if true, it capture browsers, run tests and exit
    singleRun: false,
    plugins: [
  'karma-jasmine',
  'karma-chrome-launcher',
  'karma-phantomjs-launcher',
  'karma-typescript-preprocessor',
  'karma-coverage'
  //require('../../../node_modules/karma-typescript-preprocessor/index.js')
    ]

  });
};

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Answer 1

安装+=:：

npm install karma-typescript --save-dev

把它放在你的karma.conf.js：

中

frameworks: ["jasmine", "karma-typescript"],

files: [
    { pattern: "src/**/*.ts" }
],

preprocessors: {
    "**/*.ts": ["karma-typescript"]
},

reporters: ["progress", "karma-typescript"],

browsers: ["Chrome"]

这将动态运行您的Typescript单元测试并生成如下所示的Istanbul html覆盖：

要运行上面的示例，您需要安装一些软件包：

npm install @types/jasmine jasmine-core karma karma-chrome-launcher karma-cli karma-jasmine karma-typescript typescript

这是单元测试vanilla Typescript代码的完整配置，在这种情况下不需要tsconfig.json。对于使用Angular，React等的更复杂的设置，您可以在karma-typescript和examples folder中找到示例。

Answer 2

我们正在为我们的项目使用instanbul-remap，它运行得非常好。要创建我们的覆盖率报告，我们运行以下shell脚本：

#!/bin/bash

PROJECT_PATH="$(dirname $0)/../"

cd $PROJECT_PATH
echo Creating coverage reports for `pwd`

if [ ! -d "target/dist" ]; then
  echo
  echo "target/dist directory not found. Must compile source with \`npm install\` before running tests."
  echo
  exit 1;
fi

COVERAGE_DIR=target/coverage-raw
REMAP_DIR=target/coverage-ts

mkdir -p $COVERAGE_DIR
mkdir -p $REMAP_DIR

# run coverage on unit tests only
echo Creating coverage reports for unit tests
node_modules/.bin/istanbul cover --dir $COVERAGE_DIR nodeunit `find target/dist/test/ -name *.test.js` > /dev/null

# re-map the coverage report so that typescript sources are shown
echo Remapping coverage reports for typescript
node_modules/.bin/remap-istanbul -i $COVERAGE_DIR/coverage.json -o $REMAP_DIR -t html

echo Coverage report located at $REMAP_DIR/index.html

我们的项目使用nodeunit作为测试工具，因为它是一个节点应用程序。但是，我希望类似的方法可以用于业力。

Answer 3

有karma-remap-istanbul与业力很好地整合remap-istanbul。文档是非常自我解释但有一点 - 在控制台上有摘要配置是text: undefined（否则文本输出转到文件）。

因此可以直接从karma获得覆盖摘要，但是当ts来源与karma.config.js karma-remap-istanbul在同一目录中不可用时，仍然需要更多关于配置的开发才能够生成完整的HTML报告。