Wikipedia:Lua/Modul/UnitTests/de

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UnitTests ist ein Hilfsmittel für Lua-Entwickler, mit dem eine Serie von Testfällen automatisiert (zum Abschluss einer größeren Änderung) durchlaufen werden kann.

Grundprinzip

Beim Unit Test wird nach einem vorgegebenen Katalog eine Reihe von #invoke-Aufrufen simuliert und deren Ergebnis mit dem zu erwartenden Resultat verglichen.

Nachstehend der Inhalt von Module:Hello/test:

 -- Unit tests for [[Module:Hello]]. Click test page to run tests.
local p = require( "Module:UnitTests" )
 
function p:test_hello()
    self:preprocess_equals('Hello, world! This is Lua!', 'Hello, world!')
end
 
return p

Die Testseite Wikipedia:Lua/Modul/Hello/test führt dies aus mittels:

{{#invoke:Hello/test | run_tests}}

Test-Methoden wie test_hello müssen mit "test" beginnen.

Funktionen

run_tests

run_tests( differs_at )

Durchläuft alle Tests.

• differs_at=1 – optional Spalte hinzufügen, in der die Position des ersten sich unterscheidenden Zeichens angegeben ist.

    {{#invoke:Hello/test|run_tests}}

preprocess_equals

preprocess_equals( text, expected )

Gives a piece of wikitext to preprocess and an expected resulting value. Scripts and templates can be invoked in the same manner they would be in a page.

    self:preprocess_equals('{{#invoke:Hello | hello}}', 'Hello, world!')

preprocess_equals_many

preprocess_equals_many( prefix, suffix, cases )

Performs a series of preprocess_equals() calls on a set of given pairs. Automatically adds the given prefix and suffix to each text.

    self:preprocess_equals_many('{{#invoke:DemoArgs | add |', '}}', {
        {'2|3', '5'},
        {'-2|2', '0'},
    })

preprocess_equals_preprocess

preprocess_equals_preprocess(text, expected)

Gives two pieces of wikitext to preprocess and determines if they produce the same value. Useful for comparing scripts to existing templates.

    self:preprocess_equals_preprocess('{{#invoke:Hello | hello}}', '{{Hello}}')

preprocess_equals_preprocess_many

preprocess_equals_preprocess_many( prefix, suffix, cases )

Performs a series of preprocess_equals_preprocess() calls on a set of given pairs. The prefix/suffix supplied for both arguments is added automatically. If in any case the second part is not specified, the first part will be used.

    self:preprocess_equals_preprocess_many('{{#invoke:Foo | spellnum |', '}}', '{{spellnum', '}}', {
        {'2'}, -- equivalent to {'2','2'},
        {'-2', '-2.0'},
    })

equals

equals( name, actual, expected )

Gives a computed value and the expected value, and checks if they are equal according to the == operator. Useful for testing modules that are designed to be used by other modules rather than using #invoke.

    self:equals('Simple addition', 2 + 2, 4)

equals_deep

equals_deep( name, actual, expected )

Like equals, but handles tables by doing a deep comparison. Neither value should contain circular references, as they are not handled by the current implementation and may result in an infinite loop.

    self:equals_deep('Table comparison', createRange(1,3), {1,2,3})

Herkunft

en:Module:UnitTests 2013-05-18