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CVR

line cvr

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Tools for working with code coverage reports.

CVR has support for processing coverage in Cobertura, LCOV, Jacoco, and Go Cover. Coverage is translated first to a standard JavaScript format and then can be queried for coverage metrics including line, function, and branch coverage. There are also a set of tools for interacting with the GitHub API that make it easier to get files matching coverage reports.

Installation

CVR is a node module and does not have browser support.

npm install cvr

Basic Use

var cvr = require( "cvr" );
cvr.getCoverage( coverageFileContents, coverageFileFormat, function ( err, cov )
{
    var linePercent = cvr.getLineCoveragePercent( cov );
} );

For more complicated examples, taking a look at /test/test.js is recommended.

Common Coverage Object

Parsers are used for each coverage format to convert the diverse formats into a common format that is used internally for processing. This is the Common Coverage Object and documented on lcov-parse and reproduced below.

{
  "title": "Test #1",
  "file": "anim-base/anim-base-coverage.js",
  "functions": {
    "hit": 23,
    "found": 29,
    "details": [ {
      "name": "(anonymous 1)",
      "line": 7,
      "hit": 6
    } ]
  },
  "lines": {
    "found": 181,
    "hit": 143,
    "details": [ {
      "line": 7,
      "hit": 6
    } ]
  },
  "branches": {
    "found": 123,
    "hit": 456,
    "details": [ {
      "line": 7,
      "hit": 6
    } ]
  }
}

Methods

getCoverage( content, type, callback )

  • content | String | the code coverage file contents
  • type | String [ "lcov" | "cobertura" | "gocover" | "jacoco" ] | the code coverage file type
  • callback | Function | Callback args Error, Array of Common Coverage Objects

getFileCoverage( coverageArray, filePath )

  • coverageArray | Array of Common Coverage Objects | array of file coverage
  • filePath | String | the file to find in coverageArray
  • returns | Common Coverage Object | the first matching file found, or undefined

getLine( lineCoverage, line )

  • lineCoverage | Line Coverage from Common Coverage Object | array of file coverage
  • line | Number | the line number to find
  • returns | Object { active: true | false, hit: true | false | null }
  • active whether a line was covered
  • hit whether it was hit where and hit=null when active=false

getLineCoveragePercent( coverageArray )

  • coverageArray | Array of Common Coverage Objects | array of file coverage
  • returns | Number | percent of lines that have coverage

linesCovered( coverage )

  • coverage | Common Coverage Objects | file coverage
  • returns | Array of Line Coverage | only the hit lines from the file

linesMissing( coverage )

  • coverage | Common Coverage Objects | file coverage
  • returns | Array of Line Coverage | only the non-hit lines from the file

getFileType( filePath )

  • filePath | String | the file name or path
  • returns | String | a file type based on filePath extension
  • "bash" | "css" | "go" | "javascript" | "less" | "markdown" | "python" | "sql" | "clike" (default for non-matched)

renderCoverage( coverage, source )

  • coverage | Common Coverage Object | the file coverage
  • source | String | the file contents
  • returns | String | HTML output wraps covered lines in <span>s to indicate whether the line was hit or not.

formatCoverage( coverage, source, filePath, callback )

Returns a complete template with code coloring and syntax highlighting, as compared to renderCoverage which just returns an HTML snippet.

  • coverage | Common Coverage Object | the file coverage
  • source | String | the file contents
  • filePath | String | the file path
  • callback | Function, args err: Error, String: html | html is created based on the source/templates/basic.html file

sortCoverage( coverageArray )

  • coverageArray | Array of Common Coverage Objects | array of file coverage

GitHub Methods

gitHub.getFile( accessToken, owner, repoName, commitHash, filePath, callback )

  • accessToken | String | GitHub access token
  • owner | String | GitHub file owner
  • repoName | String | GitHub repo name
  • commitHash | String | GitHub commit hash (sha)
  • filePath | String | GitHub file path (this must match the path on GitHub, not the local file path)
  • callback | Function, args err: Error, String: contents | contents is the file contents

gitHub.getRepos( accessToken, callback )

This is a convenience method that collects repos from the user's org and own repos

  • accessToken | String | GitHub access token
  • callback | Function, args err: Error, Array: repos | repos is a list of all the repos, the order is not guaranteed to be consistent

gitHub.getOwnerRepos( accessToken, callback )

  • accessToken | String | GitHub access token
  • callback | Function, args err: Error, Array: repos | repos is a list of all the owner's repos

gitHub.getOrgRepos( accessToken, org, callback )

  • accessToken | String | GitHub access token
  • org | String | GitHub organization name
  • callback | Function, args err: Error, Array: repos | repos is a list of all the org's repos

gitHub.createStatus( accessToken, message, callback )

gitHub.getOrgs( accessToken, callback )

  • accessToken | String | GitHub access token
  • callback | Function, args err: Error | callback is invoked directly by the GitHub module

gitHub.getHookByUrl( accessToken, owner, repoName, hookUrl, callback )

  • accessToken | String | GitHub access token
  • owner | String | GitHub hook owner
  • repoName | String | GitHub repo name
  • hookUrl | String | URL of hook
  • callback | Function, args err: Error | callback is invoked directly by the GitHub module

gitHub.createHook( accessToken, owner, repoName, hookUrl, callback )

  • accessToken | String | GitHub access token
  • owner | String | GitHub hook owner
  • repoName | String | GitHub repo name
  • hookUrl | String | URL of hook
  • callback | Function, args err: Error | callback is invoked directly by the GitHub module

gitHub.deleteHook( accessToken, owner, repoName, hookUrl, callback )

  • accessToken | String | GitHub access token
  • owner | String | GitHub hook owner
  • repoName | String | GitHub repo name
  • hookUrl | String | URL of hook
  • callback | Function, args err: Error | callback is invoked directly by the GitHub module

Tests

npm test

Or to run with coverage statistics npm run testcover

Contributing

A JSCS file is included. Please check any changes against the code standards defined in that file. All changes should have tests.

License

MIT

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