@include describe("be") {
  @include it("should expect to be something") {
    @include should( expect( 1         ), to( be( 1         )));
    @include should( expect( a         ), to( be( a         )));
    @include should( expect( true      ), to( be( true      )));
    @include should( expect( false     ), to( be( false     )));
    @include should( expect( null      ), to( be( null      )));
  }

  @include it("should expect not to be something") {
    @include should( expect( 1         ), not-to( be( 2       )));
    @include should( expect( a         ), not-to( be( b       )));
    @include should( expect( true      ), not-to( be( false   )));
    @include should( expect( false     ), not-to( be( true    )));
    @include should( expect( null      ), not-to( be( valid   )));
  }

  @include it("should expect two equal values to be equal") {
    @include should( expect(  1    ), to( be(  1    )));
    @include should( expect( -1    ), to( be( -1    )));
    @include should( expect( a     ), to( be( a     )));
    @include should( expect( false ), to( be( false )));
  }

  @include it("should expect two non-equal values not to be equal") {
    @include should( expect(  1    ), not-to( be( 2    )));
    @include should( expect( -1    ), not-to( be( 1    )));
    @include should( expect( a     ), not-to( be( b    )));
    @include should( expect( false ), not-to( be( true )));
  }

  @include it("should expect two equal lists to be equal") {
    @include should(expect( (1, 2, 3) ),           to( be( (1, 2, 3) )));
    @include should(expect( ("a", "b", "c") ),     to( be( ("a", "b", "c") )));
    @include should(expect( (true, false, true) ), to( be( (true, false, true) )));
  }

  @include it("should expect two unequal lists not to be equal") {
    @include should(expect( (3, 2, 1) ),            not-to( be( (1, 2, 3) )));
    @include should(expect( ("c", "b", "a") ),      not-to( be( ("a", "b", "c") )));
    @include should(expect( (false, true, false) ), not-to( be( (true, false, true) )));
  }

  @include it("should expect two equal lists with different seperators to be equal") {
    @include should(expect( 1 2 3 ),           to( be( (1, 2, 3) )));
    @include should(expect( "a" "b" "c" ),     to( be( ("a", "b", "c") )));
    @include should(expect( true false true ), to( be( (true, false, true) )));
  }

  @include it("should expect two equal lists built up programmatically to be equal") {
    $numbers: 1, 2, 3;
    $strings: "a", "b", "c";
    $booleans: true, false, true;

    $numbers-out:  ();
    $strings-out:  ();
    $booleans-out: ();

    @for $i from 1 through 3 {
      $numbers-out:  append($numbers-out,  nth($numbers,  $i), comma);
      $strings-out:  append($strings-out,  nth($strings,  $i), comma);
      $booleans-out: append($booleans-out, nth($booleans, $i), comma);
    }

    @include should(expect($numbers-out ), to( be( (1, 2, 3) )));
    @include should(expect($strings-out ), to( be( ("a", "b", "c") )));
    @include should(expect($booleans-out), to( be( (true, false, true) )));
  }

  @include it("should expect two unequal lists built up programmatically not to be equal") {
    $numbers: 1, 2, 3;
    $strings: "a", "b", "c";
    $booleans: true, false, true;

    $numbers-out:  ();
    $strings-out:  ();
    $booleans-out: ();

    @for $i from 1 through 3 {
      $numbers-out:  append($numbers-out,  nth($numbers,  $i), comma);
      $strings-out:  append($strings-out,  nth($strings,  $i), comma);
      $booleans-out: append($booleans-out, nth($booleans, $i), comma);
    }

    @include should(expect($numbers-out ), not-to( be( (3, 2, 1) )));
    @include should(expect($strings-out ), not-to( be( ("c", "b", "a") )));
    @include should(expect($booleans-out), not-to( be( (false, true, false) )));
  }
}