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incremental-coverage

![](https://img.shields.io/github/license/matmanjs/incremental-coverage) ![](https://img.shields.io/github/languages/code-size/matmanjs/incremental-coverage)

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decreased by-47.16%
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2
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Incremental Coverage

本应用结合 lcov.infoGit Diff 得到仓库的增量覆盖率数据。

  • 快速开始-快速得到一份测试报告
  • API-介绍暴露出来的 API 与配置选项

Incremental Coverage 适用于 macOS、Windows 和 Linux。

如果 Incremental Coverage 不能正常工作,请提交 issue

Quick Start

安装

可以通过 NPM 或者 Yarn 进行安装。

$ npm install -g incremental-coverage
# or
$ yarn add global incremental-coverage

使用

我们通过一个简单的命令行工具来展示如何使用(必须在 Git 仓库根目录中运行,且指定 lcov 文件)。

$ incremental-coverage -p="./.dwt_output/e2e/coverage/lcov.info" -t="2020-06-01"
  • 上面这条命令指定 ./.dwt_output/e2e/coverage/lcov.info 覆盖率文件
  • 并且指定了 2020-06-01 增量起始时间
  • 运行这个命令将会在根目录输出一个 output.json 文件,文件示例如下:
{
  "total": { "increLine": 2, "covLine": 2, "increRate": "100.00%" },
  "files": [
    {
      "increLine": 2,
      "covLine": 2,
      "increRate": "100.00%",
      "detail": [
        { "number": 5, "hits": 73 },
        { "number": 71, "hits": 45 }
      ],
      "name": "/src/datas/action.js"
    }
  ]
}

total 为增量覆盖率的总情况,files 中是各个文件的详细情况。

API

提供 命令行Node.js 调用两种形式

命令行

CLI 没有子命令只有最简单的三个选项:

  • --path、-p:指定 lcov.info 文件的路径
  • --time、-t:执行增量计算的开始时间(建议不要太长)
  • --output、-o:结果的输出方式,可以选择 file 与 stdio,默认为 file

API

Incremental Coverage 对外暴露两个 API 与三个 Parser

getIncrease
params
  • path:lcov.info 文件的路径
  • opts:配置选项
    • cwd:String,git 命令运行的路径
    • since:String,增量起始计算时间
    • output:Boolean,是否需要输出
    • stream:Object,针对输出流的配置
      • name:file 或者 stdio
      • opts:包含 type 输出格式,可选 jsonyamlfilePath(name 为 file 时生效)指定输出文件路径;ioType(name 为 stdio 时生效),可选 stdout、stderr
return

格式化后的数据,与上面的示例文件保持一致

getIncreaseSync

getIncrease 保持一致,不过为同步方法,不推荐使用

Parser 统一实现 Parser 接口,仅仅暴露一个 run 方法

lcovConcat
params
  • ...args: string[]:lcov.info 文件路径
return

合并之后的数据

example
console.log(lcovParser(lcov1, lcov2));
DiffParser
export declare class DiffParser implements Parser {
  constructor(hash: string, opt?: child.ExecOptions);
  run(): Promise<File[]>;
}
  • hash:需要进行 Diff 的 Commit ID
  • opt:与子进程接受的参数相同可以 参考
  • File:本数据结构如下(使用 gitdiff-parser
export interface Change {
  content: string;
  type: 'insert' | 'delete' | 'normal';
  isInsert?: boolean;
  isDelete?: boolean;
  isNormal?: boolean;
  lineNumber?: number;
  oldLineNumber?: number;
  newLineNumber?: number;
}

export interface Hunk {
  content: string;
  oldStart: number;
  newStart: number;
  oldLines: number;
  newLines: number;
  changes: Change[];
}

export interface File {
  hunks: Hunk[];
  oldEndingNewLine: boolean;
  newEndingNewLine: boolean;
  oldMode: string;
  newMode: string;
  similarity?: number;
  oldRevision: string;
  newRevision: string;
  oldPath: string;
  newPath: string;
  isBinary?: boolean;
  type: 'add' | 'delete' | 'modify' | 'rename';
}
LogParser
export declare class LogParser implements Parser {
  constructor(opt?: GitlogOptions);
  run(): Promise<
    (Record<'abbrevHash' | 'hash' | 'subject' | 'authorName' | 'authorDate' | 'status', string> & {
      files: string[];
    })[]
  >;
}
  • opt 以及返回数据都可以 参考
LcovParser
export declare class LcovParser implements Parser {
  constructor(path: string);
  run(): Promise<Info>;
}
  • path:lcov 文件的路径
  • Info:格式化之后的数据,如下
// 覆盖率测试报告格式化数据结构
export interface Total {
  linesCovered: number;
  linesValid: number;
}

export interface DetailLines {
  lineRate: number;
  lines: {
    branch: string;
    hits: number;
    number: string;
  }[];
}

export interface Lcov {
  detail: Record<string, DetailLines>;
  $?: Total;
}

License

Incremental Coverage 使用 MIT 开源协议

FAQs

Package last updated on 17 Aug 2020

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