Module:Convert/tester/doc
 | This is a documentation subpage for Module:Convert/tester. It may contain usage information, categories and other content that is not part of the original module page. |
This module runs unit tests to compare template output with expected text. In addition, the module can output the results of expanding templates.
While intended for testing Module:Convert, the tester should be useful with other templates that require many tests using a simple format for the test input.
Testcases example
- Module:Convert/sandbox/testcases – templates to be tested, with expected outputs
- Module talk:Convert/sandbox/testcases – view test results
It is not necessary to save the testcases page before viewing test results. For example, Module:Convert/sandbox/testcases could be edited to change the tests. While still editing that page, paste "Module talk:Convert/sandbox/testcases" (without quotes) into the page title box under "Preview page with this template", then click "Show preview".
The testcases talk page (for example, Module talk:Convert/sandbox/testcases) contains:
{{#invoke:convert/sandbox/testcases|run_tests}}
The testcases module page (for example, Module:Convert/sandbox/testcases) may contain:
local tests = [==[
A template to be tested must be at the start of a line.
Lines which do not start with a template are ignored.
{{convert/sandbox|1|acre|lk=on}} 1 [[acre]] (0.40 [[hectare|ha]])
{{convert/sandbox|1|m2|acres|lk=on}} 1 [[square metre]] (0.00025 [[acre]]s)
{{convert/sandbox|0.16|/l|2|disp=table}} align="right"|0.16\n|align="right"|0.61
]==]
local p = require('Module:Convert/tester')
p.tests = tests
return p
If wanted, the tests can be run using a template different from the one specified in the tests. For example, the following would run the tests from Module:Convert/sandbox/testcases, but would change the name of each template found on that page to "convert/sandbox2".
{{#invoke:convert/sandbox/testcases|run_tests|template=convert/sandbox2}}
Format
Tests are extracted from a multiline string. Any line that does not start with a template is ignored. Each processed line starts with a template, and is followed by whitespace, then the wikitext which should result from expanding the template.
The expected output must be entered in a single line. If the template outputs multiple lines, those lines must be joined with "\n" (two characters—backslash n).
The templates do not have to be the same, for example, the following tests would work:
local tests = [==[
{{convert|12|m}} 12 metres (39 ft)
{{convert/sandbox|12|m}} 12 metres (39 ft)
{{age|1989|7|23|2003|7|14}} 13
{{age in days|2007|5|24|2008|4|23}} 335
]==]
In the results, the status column shows "Pass" if the output from the template exactly matches the expected text. If there is no expected text, the template output is shown in the Actual column with a blank status. If the given expected text differs from the template output, the template output is shown in the Actual column with status "Fail", and the number of fails is shown at the top of the page. Searching the page for "Fail" will find each problem. Any "Fail" result is followed by a row showing the nowiki actual and expected wikitext.
Specifying tests
If using a testcases module (as in the above example), the test text is assigned to p.tests before executing run_tests.
Alternatively, the test text can be read from any page, or from any section on any page. For example, the following wikitext could be entered in a sandbox:
== Mixed tests ==
<pre>
{{convert|12|m}} 12 metres (39 ft)
{{convert/sandbox|0.16|/l|2|disp=table}} align="right"|0.16\n|align="right"|0.61
{{age in days|2007|5|24|2008|4|23}} 335
The following line is incorrect to demonstrate a "fail".
{{convert|12|m|lk=on}} 12 [[meter|metres]] (39 [[Foot|ft]])
The following line demonstrates the result when no expected text is provided.
{{convert/sandbox|1|-|5|in|mm|lk=on}}
</pre>
Given the above, the tests can be run as shown in the following section.
Instead of specifying the tests with a multiline string, it is possible to assign a table to p.tests as shown in the following testcases module.
local tests = {
-- Each test item is of form { template, expected }.
{ '{{convert|12|m}}', '12 metres (39 ft)' },
{ '{{convert/sandbox|0.16|/l|2|disp=table}}', 'align="right"|0.16\n|align="right"|0.61' },
{ '{{age in days|2007|5|24|2008|4|23}}', '335' },
{ '{{convert|12|m|lk=on}}', '12 [[meter|metres]] (39 [[Foot|ft]])' },
{ '{{convert/sandbox|1|-|5|in|mm|lk=on}}' },
}
local p = require('Module:Convert/tester')
p.tests = tests
return p
This example provides the same results as the multiline string at "Mixed tests" above.
Running tests from any page
Entering either of the following lines of wikitext in a sandbox or talk page would run the tests found at the specified location. The first line would show all tests on page "Template talk:Example", while the second would show only those tests on that page that are in the "Mixed tests" section.
{{#invoke:convert/tester|run_tests|page=Template talk:Example}}
{{#invoke:convert/tester|run_tests|page=Template talk:Example|section=Mixed tests}}
As a demonstration, the following line is used to produce the table shown below.
{{#invoke:convert/tester|run_tests|page=Module:Convert/tester/doc|section=Specifying tests}}
2 tests failed, 1 test ignored because expected text is blank.
| Template | Expected | Actual, if different | Status |
|---|---|---|---|
| {{convert|12|m}} | 12 metres (39 ft) | Pass | |
| {{convert/sandbox|0.16|/l|2|disp=table}} | align="right"|0.16 |align="right"|0.61 |
style="text-align:right;"|0.16 |style="text-align:right;"|0.61 |
Fail |
| (above, nowiki) | align="right"|0.16 |align="right"|0.61 |
style="text-align:right;"|0.16 |style="text-align:right;"|0.61 |
|
| {{age in days|2007|5|24|2008|4|23}} | 335 | Pass | |
| {{convert|12|m|lk=on}} | 12 metres (39 ft) | 12 metres (39 ft) | Fail |
| (above, nowiki) | 12 [[meter|metres]] (39 [[Foot|ft]]) | 12 [[metre]]s (39 [[Foot (unit)|ft]]) | |
| {{convert/sandbox|1|-|5|in|mm|lk=on}} | 1–5 inches (25–127 mm) |
Making expected results
Function make_tests can be used to create tests in the format expected by run_tests. For example, previewing the following in a sandbox would show the results from expanding each template found on the specified page.
{{#invoke:convert/tester|make_tests|page=Template talk:Example}}
When using make_tests, any expected results in the input are ignored. Instead, the module shows each template and its actual output as plain text which can be copied to make a testcases page. The templates to be processed can be specified by setting p.tests or by specifying a page with an optional section.
As a demonstration, the following line is used to produce the text shown below.
{{#invoke:convert/tester|make_tests|page=Module:Convert/tester/doc|section=Specifying tests}}
{{convert|12|m}} 12 metres (39 ft)
{{convert/sandbox|0.16|/l|2|disp=table}} style="text-align:right;"|0.16\n|style="text-align:right;"|0.61
{{age in days|2007|5|24|2008|4|23}} 335
{{convert|12|m|lk=on}} 12 [[metre]]s (39 [[Foot (unit)|ft]])
{{convert/sandbox|1|-|5|in|mm|lk=on}} 1–5 [[inch|inches]] (25–127 [[Millimetre|mm]])
Comparing a module with its sandbox
When working in a module's sandbox, it would be convenient to easily check whether the content of the module and its sandbox are the same. The tester module provides a check_sandbox function which checks pairs of page titles specified in p.pairs (a table). This documentation is not yet complete, but the default for p.pairs lists the convert modules, and previewing the following generates a list showing the results.
{{#invoke:convert/sandbox/testcases|check_sandbox}}
The following text is a sample showing output that may result from the above.
- Module:Convert • Module:Convert/sandbox • different (diff)
- Module:Convert/data • Module:Convert/data/sandbox • same content
- Module:Convert/text • Module:Convert/text/sandbox • different (diff)
- Module:Convert/extra • Module:Convert/extra/sandbox • different (diff)