constructor-syntax.js

const assert = require('assert')
const linter = require('../../../lib/index')
const { multiLine } = require('../../common/contract-builder')
const { assertErrorMessage } = require('../../common/asserts')
const BaseDeprecation = require('../../../lib/rules/deprecations/base-deprecation')

describe('Linter - constructor-syntax', () => {
  it('should raise a warning for old-style constructors', () => {
    const code = multiLine(
      '              ', // 1
      'pragma solidity 0.4.22;          ', // 2
      'contract A {                     ', // 3
      '    function A() public {}       ', // 4
      '}                                ' // 5
    )
    const report = linter.processStr(code, {
      rules: { 'constructor-syntax': 'warn' },
    })

    assert.equal(report.warningCount, 1)
    assertErrorMessage(report, 0, 'constructor keyword')
  })

  it('should NOT raise a warning for old-style constructors in old versions', () => {
    const code = multiLine(
      '              ', // 1
      'pragma solidity 0.4.21;          ', // 2
      'contract A {                     ', // 3
      '    function A() public {}       ', // 4
      '}                                ' // 5
    )
    const report = linter.processStr(code, {
      rules: { 'constructor-syntax': 'warn' },
    })
    assert.equal(report.warningCount, 0)
  })

  it('should NOT raise a warning for new-style constructors', () => {
    const code = multiLine(
      '              ', // 1
      'pragma solidity 0.4.22;          ', // 2
      'contract A {                     ', // 3
      '    constructor() public {}      ', // 4
      '}                                ' // 5
    )
    const report = linter.processStr(code, {
      rules: { 'constructor-syntax': 'warn' },
    })
    assert.equal(report.warningCount, 0)
  })

  it('should raise an error for new-style constructors in old versions', () => {
    const code = multiLine(
      '              ', // 1
      'pragma solidity 0.4.21;          ', // 2
      'contract A {                     ', // 3
      '    constructor() public {}      ', // 4
      '}                                ' // 5
    )
    const report = linter.processStr(code, {
      rules: { 'constructor-syntax': 'error' },
    })
    assert.equal(report.errorCount, 1)
    assertErrorMessage(report, 0, 'Constructor keyword')
  })

  it('should fail without deprecationVersion() implemented', () => {
    assert.throws(() => new BaseDeprecation())
  })
})