# Tests > Reference for OneFuse Jinja2 tests used to evaluate variables and expressions --- Site [llms.txt](/llms.txt) --- Tests can be used to test a variable against a common [expression](/docs/onefuse/templating/expressions/). To test a variable or expression, you add the [is-operator](/docs/onefuse/templating/expressions/#is) or [is not-operator](/docs/onefuse/templating/expressions/#not) plus the name of the test after the variable. ```jinja2 {{ 21 is divisibleby(3) }} => true ``` ## boolean Test returns `true` if the object is a boolean value. ```jinja2 {{ true is boolean }} => true ``` See also: [false](#false), [true](#true). ## defined Test returns `true` if the variable is defined. ```jinja2 {{ foo is defined }} ``` Refer to the [default filter](/docs/onefuse/templating/filters/#default). See also: [undefined](#undefined). ## divisibleby Test returns `true` if the variable is divisible by a number. ```jinja2 {# divisibleby(num) #} {{ 21 is divisibleby 3 }} => true ``` Refer to the [divide operator](/docs/onefuse/templating/expressions/#divide). ## eq Test returns `true` if the variable equals the second variable. ```jinja2 {{ 1 is eq 2 }} => false ``` Refer to the [equality comparison](/docs/onefuse/templating/expressions/#equality). See also: [ge](#ge), [gt](#gt), [le](#le), [lt](#lt), [ne](#ne). ## escaped Test returns `true` if the variable is escaped. ```jinja2 {{ foo is escaped }} ``` Refer to the [escape filter](/docs/onefuse/templating/filters/#escape). ## even Test returns `true` if the variable is even. ```jinja2 {{ 2 is even }} => true ``` See also: [float](#float), [integer](#integer), [number](#number), [odd](#odd). ## false Test returns `true` if the variable is false. ```jinja2 {{ true is false }} => false ``` See also: [boolean](#boolean), [true](#true). ## float Test returns `true` if the object is a float. ```jinja2 {{ foo is not float }} ``` Refer to the [float filter](/docs/onefuse/templating/filters/#float). See also: [even](#even), [integer](#integer), [number](#number), [odd](#odd). ## ge Test returns `true` if the variable is greater than or equal to the second variable. ```jinja2 {{ 3 is ge(3) }} => true ``` Refer to the [greater than or equal to comparison](/docs/onefuse/templating/expressions/#greater-than-or-equal-to). See also: [eq](#eq), [gt](#gt), [le](#le), [lt](#lt), [ne](#ne). ## gt Test returns `true` if the variable is greater than the second variable. ```jinja2 {{ 1 is gt(3) }} => false ``` Refer to the [greater than comparison](/docs/onefuse/templating/expressions/#greater-than). See also: [eq](#eq), [ge](#ge), [le](#le), [lt](#lt), [ne](#ne). ## in Test returns `true` if the variable is in the sequence. ```jinja2 {{ 1 is in [1, 2, 3] }} => true ``` Refer to the [`in` operator](/docs/onefuse/templating/expressions/#in). ## integer Test returns `true` if the variable is an integer. ```jinja2 {{ "1" is integer }} => false ``` Refer to the [int filter](/docs/onefuse/templating/filters/#int). See also: [even](#even), [float](#float), [number](#number), [odd](#odd). ## iterable Test returns `true` if it is possible to iterate over an object. ```jinja2 {{ [1, 2, 3] is iterable }} => true ``` See also: [sequence](#sequence). ## le Test returns `true` if the variable is less than or equal to the second variable. ```jinja2 {{ 3 is le(3) }} => true ``` Refer to the [less than or equal to comparison](/docs/onefuse/templating/expressions/#less-than-or-equal-to). See also: [eq](#eq), [ge](#ge), [gt](#gt), [lt](#lt), [ne](#ne). ## lower Test returns `true` if the variable is lowercased. ```jinja2 {{ "hello" is lower }} => true ``` Refer to the [lower filter](/docs/onefuse/templating/filters/#lower). See also: [upper](#upper). ## lt Test returns `true` if the variable is less than the second variable. ```jinja2 {{ 1 is lt(3) }} => true ``` Refer to the [less than comparison](/docs/onefuse/templating/expressions/#less-than). See also: [eq](#eq), [ge](#ge), [gt](#gt), [le](#le), [ne](#ne). ## mapping Test returns `true` if the object is a mapping. ```jinja2 {{ dict is mapping }} ``` Refer to the [dict literal](/docs/onefuse/templating/expressions/#dict). ## ne Test returns `true` if the variable is not equal to the second variable. ```jinja2 {{ foo is ne bar }} ``` Refer to the [inequality comparison](/docs/onefuse/templating/expressions/#inequality). See also: [eq](#eq), [ge](#ge), [gt](#gt), [le](#le), [lt](#lt). ## none Test returns `true` if the variable is none. ```jinja2 {{ foo is none }} ``` Refer to the [default filter](/docs/onefuse/templating/filters/#default). ## number Test returns `true` if the variable is a number. ```jinja2 {{ 1 is number }} => true ``` See also: [even](#even), [float](#float), [integer](#integer), [odd](#odd). ## odd Test returns `true` if the variable is odd. ```jinja2 {{ 1 is odd }} => true ``` See also: [even](#even), [float](#float), [integer](#integer), [number](#number). ## sameas Test returns `true` if an object points to the same memory address as another object. ```jinja2 {{ foo.bar is sameas 1 }} ``` ## sequence Test returns `true` if the variable is a sequence. ```jinja2 {{ [1,2,3] is sequence }} => true ``` Refer to the [sequence literal](/docs/onefuse/templating/expressions/#list). See also: [iterable](#iterable). ## string Test returns `true` if the variable is a string. ```jinja2 {{ "hello" is string }} => true ``` Refer to the [string filter](/docs/onefuse/templating/filters/#string). ## true Test returns `true` if the object is true. ```jinja2 {{ true is true }} => true ``` See also: [boolean](#boolean), [false](#false). ## undefined Test returns `true` if the variable is undefined. ```jinja2 {{ foo is undefined }} ``` Refer to the [default filter](/docs/onefuse/templating/filters/#default). See also: [defined](#defined). ## upper Test returns `true` if the variable is uppercased. ```jinja2 {{ "HELLO" is upper }} => true ``` Refer to the [upper filter](/docs/onefuse/templating/filters/#upper). See also: [lower](#lower).