Tests

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Tests can be used to test a variable against a common expression.

To test a variable or expression, you add the is-operator or is not-operator plus the name of the test after the variable.

{{ 21 is divisibleby(3) }}

=> true

boolean

Test returns true if the object is a boolean value.

{{ true is boolean }}

=> true

See also: false, true.

defined

Test returns true if the variable is defined.

{{ foo is defined }}

Refer to the default filter.

See also: undefined.

divisibleby

Test returns true if the variable is divisible by a number.

{# divisibleby(num) #}

{{ 21 is divisibleby 3 }}

=> true

Refer to the divide operator.

eq

Test returns true if the variable equals the second variable.

{{ 1 is eq 2 }}

=> false

Refer to the equality comparison.

See also: ge, gt, le, lt, ne.

escaped

Test returns true if the variable is escaped.

{{ foo is escaped }}

Refer to the escape filter.

even

Test returns true if the variable is even.

{{ 2 is even }}

=> true

See also: float, integer, number, odd.

false

Test returns true if the variable is false.

{{ true is false }}

=> false

See also: boolean, true.

float

Test returns true if the object is a float.

{{ foo is not float }}

Refer to the float filter.

See also: even, integer, number, odd.

ge

Test returns true if the variable is greater than or equal to the second variable.

{{ 3 is ge(3) }}

=> true

Refer to the greater than or equal to comparison.

See also: eq, gt, le, lt, ne.

gt

Test returns true if the variable is greater than the second variable.

{{ 1 is gt(3) }}

=> false

Refer to the greater than comparison.

See also: eq, ge, le, lt, ne.

in

Test returns true if the variable is in the sequence.

{{ 1 is in [1, 2, 3] }}

=> true

Refer to the in operator.

integer

Test returns true if the variable is an integer.

{{ "1" is integer }}

=> false

Refer to the int filter.

See also: even, float, number, odd.

iterable

Test returns true if it is possible to iterate over an object.

{{ [1, 2, 3] is iterable }}

=> true

See also: sequence.

le

Test returns true if the variable is less than or equal to the second variable.

{{ 3 is le(3) }}

=> true

Refer to the less than or equal to comparison.

See also: eq, ge, gt, lt, ne.

lower

Test returns true if the variable is lowercased.

{{ "hello" is lower }}

=> true

Refer to the lower filter.

See also: upper.

lt

Test returns true if the variable is less than the second variable.

{{ 1 is lt(3) }}

=> true

Refer to the less than comparison.

See also: eq, ge, gt, le, ne.

mapping

Test returns true if the object is a mapping.

{{ dict is mapping }}

Refer to the dict literal.

ne

Test returns true if the variable is not equal to the second variable.

{{ foo is ne bar }}

Refer to the inequality comparison.

See also: eq, ge, gt, le, lt.

none

Test returns true if the variable is none.

{{ foo is none }}

Refer to the default filter.

number

Test returns true if the variable is a number.

{{ 1 is number }}

=> true

See also: even, float, integer, odd.

odd

Test returns true if the variable is odd.

{{ 1 is odd }}

=> true

See also: even, float, integer, number.

sameas

Test returns true if an object points to the same memory address as another object.

{{ foo.bar is sameas 1 }}

sequence

Test returns true if the variable is a sequence.

{{ [1,2,3] is sequence }}

=> true

Refer to the sequence literal.

See also: iterable.

string

Test returns true if the variable is a string.

{{ "hello" is string }}

=> true

Refer to the string filter.

true

Test returns true if the object is true.

{{ true is true }}

=> true

See also: boolean, false.

undefined

Test returns true if the variable is undefined.

{{ foo is undefined }}

Refer to the default filter.

See also: defined.

upper

Test returns true if the variable is uppercased.

{{ "HELLO" is upper }}

=> true

Refer to the upper filter.

See also: lower.