Spock - approximate comparisions

I’ve been looking for the Spock equivalent of the following convenience method in JUnit whereby you can do “approximate” comparisons. Does anyone know if such a thing exists?

/**

 * Asserts that two doubles or floats are equal to within a positive delta.

 */

assertEquals(double expected, double actual, double delta)

edited Nov 22 '18 at 23:34

Dónal

122k155483750

asked Nov 22 '18 at 14:19

dre

4651620

You may want to use Hamcrest matchers.

– Jeff Scott Brown
Nov 22 '18 at 15:49

add a comment |

I’ve been looking for the Spock equivalent of the following convenience method in JUnit whereby you can do “approximate” comparisons. Does anyone know if such a thing exists?

/**

 * Asserts that two doubles or floats are equal to within a positive delta.

 */

assertEquals(double expected, double actual, double delta)

edited Nov 22 '18 at 23:34

Dónal

122k155483750

asked Nov 22 '18 at 14:19

dre

4651620

You may want to use Hamcrest matchers.

– Jeff Scott Brown
Nov 22 '18 at 15:49

add a comment |

I’ve been looking for the Spock equivalent of the following convenience method in JUnit whereby you can do “approximate” comparisons. Does anyone know if such a thing exists?

/**

 * Asserts that two doubles or floats are equal to within a positive delta.

 */

assertEquals(double expected, double actual, double delta)

edited Nov 22 '18 at 23:34

Dónal

122k155483750

asked Nov 22 '18 at 14:19

dre

4651620

I’ve been looking for the Spock equivalent of the following convenience method in JUnit whereby you can do “approximate” comparisons. Does anyone know if such a thing exists?

/**

 * Asserts that two doubles or floats are equal to within a positive delta.

 */

assertEquals(double expected, double actual, double delta)

grails junit spock

edited Nov 22 '18 at 23:34

Dónal

122k155483750

asked Nov 22 '18 at 14:19

dre

4651620

edited Nov 22 '18 at 23:34

Dónal

122k155483750

asked Nov 22 '18 at 14:19

dre

4651620

edited Nov 22 '18 at 23:34

Dónal

122k155483750

edited Nov 22 '18 at 23:34

Dónal

122k155483750

edited Nov 22 '18 at 23:34

Dónal

122k155483750

asked Nov 22 '18 at 14:19

dre

4651620

asked Nov 22 '18 at 14:19

dre

4651620

asked Nov 22 '18 at 14:19

dre

4651620

You may want to use Hamcrest matchers.

– Jeff Scott Brown
Nov 22 '18 at 15:49

add a comment |

You may want to use Hamcrest matchers.

– Jeff Scott Brown
Nov 22 '18 at 15:49

You may want to use Hamcrest matchers.

– Jeff Scott Brown
Nov 22 '18 at 15:49

add a comment |

2 Answers
2

active

oldest

votes

There is build in function for that, described in official docs:

when:

def x = computeValue()



then:

expect x, closeTo(42, 0.01)

Check the specs.

answered Nov 22 '18 at 20:33

Michal_Szulc

2,26631844

This answers the question more specifically. Thanks @Michal_Szulc

– dre
Nov 23 '18 at 12:40

See also Spock release notes mentioning Hamcrest support here and there.

– kriegaex
Dec 20 '18 at 6:49

add a comment |

I don't know if there's a Spock equivalent but it's easy to write your own

class Foo extends Specification {



  private boolean compareApproximately(Number expected, Number actual, Number delta) {

    Math.abs(expected - actual) <= delta

  }



  def "approximate test"() {

    expect:

    compareApproximately(4, 4.5, 1)

    !compareApproximately(4, 4.5, 0.1)

  }

}

In practice, you'd probably want to make compareApproximately reusable across specs by defining it in a trait, subclass of Specification, or a static method in a utility class.

edited Nov 22 '18 at 22:20

answered Nov 22 '18 at 16:24

Dónal

122k155483750

1

Ah.. the infamous Murtag! Indeed you are powerful. Internet points for you!!!

– dre
Nov 22 '18 at 16:27

add a comment |

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

There is build in function for that, described in official docs:

when:

def x = computeValue()



then:

expect x, closeTo(42, 0.01)

Check the specs.

answered Nov 22 '18 at 20:33

Michal_Szulc

2,26631844

This answers the question more specifically. Thanks @Michal_Szulc

– dre
Nov 23 '18 at 12:40

See also Spock release notes mentioning Hamcrest support here and there.

– kriegaex
Dec 20 '18 at 6:49

add a comment |

There is build in function for that, described in official docs:

when:

def x = computeValue()



then:

expect x, closeTo(42, 0.01)

Check the specs.

answered Nov 22 '18 at 20:33

Michal_Szulc

2,26631844

This answers the question more specifically. Thanks @Michal_Szulc

– dre
Nov 23 '18 at 12:40

See also Spock release notes mentioning Hamcrest support here and there.

– kriegaex
Dec 20 '18 at 6:49

add a comment |

There is build in function for that, described in official docs:

when:

def x = computeValue()



then:

expect x, closeTo(42, 0.01)

Check the specs.

answered Nov 22 '18 at 20:33

Michal_Szulc

2,26631844

There is build in function for that, described in official docs:

when:

def x = computeValue()



then:

expect x, closeTo(42, 0.01)

Check the specs.

answered Nov 22 '18 at 20:33

Michal_Szulc

2,26631844

answered Nov 22 '18 at 20:33

Michal_Szulc

2,26631844

answered Nov 22 '18 at 20:33

Michal_Szulc

2,26631844

answered Nov 22 '18 at 20:33

Michal_Szulc

2,26631844

This answers the question more specifically. Thanks @Michal_Szulc

– dre
Nov 23 '18 at 12:40

See also Spock release notes mentioning Hamcrest support here and there.

– kriegaex
Dec 20 '18 at 6:49

add a comment |

This answers the question more specifically. Thanks @Michal_Szulc

– dre
Nov 23 '18 at 12:40

See also Spock release notes mentioning Hamcrest support here and there.

– kriegaex
Dec 20 '18 at 6:49

This answers the question more specifically. Thanks @Michal_Szulc

– dre
Nov 23 '18 at 12:40

See also Spock release notes mentioning Hamcrest support here and there.

– kriegaex
Dec 20 '18 at 6:49

add a comment |

I don't know if there's a Spock equivalent but it's easy to write your own

class Foo extends Specification {



  private boolean compareApproximately(Number expected, Number actual, Number delta) {

    Math.abs(expected - actual) <= delta

  }



  def "approximate test"() {

    expect:

    compareApproximately(4, 4.5, 1)

    !compareApproximately(4, 4.5, 0.1)

  }

}

In practice, you'd probably want to make compareApproximately reusable across specs by defining it in a trait, subclass of Specification, or a static method in a utility class.

edited Nov 22 '18 at 22:20

answered Nov 22 '18 at 16:24

Dónal

122k155483750

1

Ah.. the infamous Murtag! Indeed you are powerful. Internet points for you!!!

– dre
Nov 22 '18 at 16:27

add a comment |

I don't know if there's a Spock equivalent but it's easy to write your own

class Foo extends Specification {



  private boolean compareApproximately(Number expected, Number actual, Number delta) {

    Math.abs(expected - actual) <= delta

  }



  def "approximate test"() {

    expect:

    compareApproximately(4, 4.5, 1)

    !compareApproximately(4, 4.5, 0.1)

  }

}

In practice, you'd probably want to make compareApproximately reusable across specs by defining it in a trait, subclass of Specification, or a static method in a utility class.

edited Nov 22 '18 at 22:20

answered Nov 22 '18 at 16:24

Dónal

122k155483750

1

Ah.. the infamous Murtag! Indeed you are powerful. Internet points for you!!!

– dre
Nov 22 '18 at 16:27

add a comment |

I don't know if there's a Spock equivalent but it's easy to write your own

class Foo extends Specification {



  private boolean compareApproximately(Number expected, Number actual, Number delta) {

    Math.abs(expected - actual) <= delta

  }



  def "approximate test"() {

    expect:

    compareApproximately(4, 4.5, 1)

    !compareApproximately(4, 4.5, 0.1)

  }

}

In practice, you'd probably want to make compareApproximately reusable across specs by defining it in a trait, subclass of Specification, or a static method in a utility class.

edited Nov 22 '18 at 22:20

answered Nov 22 '18 at 16:24

Dónal

122k155483750

I don't know if there's a Spock equivalent but it's easy to write your own

class Foo extends Specification {



  private boolean compareApproximately(Number expected, Number actual, Number delta) {

    Math.abs(expected - actual) <= delta

  }



  def "approximate test"() {

    expect:

    compareApproximately(4, 4.5, 1)

    !compareApproximately(4, 4.5, 0.1)

  }

}

In practice, you'd probably want to make compareApproximately reusable across specs by defining it in a trait, subclass of Specification, or a static method in a utility class.

edited Nov 22 '18 at 22:20

answered Nov 22 '18 at 16:24

Dónal

122k155483750

edited Nov 22 '18 at 22:20

answered Nov 22 '18 at 16:24

Dónal

122k155483750

answered Nov 22 '18 at 16:24

Dónal

122k155483750

answered Nov 22 '18 at 16:24

Dónal

122k155483750

1

Ah.. the infamous Murtag! Indeed you are powerful. Internet points for you!!!

– dre
Nov 22 '18 at 16:27

add a comment |

1

Ah.. the infamous Murtag! Indeed you are powerful. Internet points for you!!!

– dre
Nov 22 '18 at 16:27

Ah.. the infamous Murtag! Indeed you are powerful. Internet points for you!!!

– dre
Nov 22 '18 at 16:27

add a comment |

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