117 lines
6.5 KiB
Plaintext
117 lines
6.5 KiB
Plaintext
The Elasticsearch docs are in AsciiDoc format and can be built using the
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Elasticsearch documentation build process.
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See: https://github.com/elastic/docs
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Snippets marked with `[source,console]` are automatically annotated with
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"VIEW IN CONSOLE" and "COPY AS CURL" in the documentation and are automatically
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tested by the command `./gradlew -pdocs check`. To test just the docs from a
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single page, use e.g. `./gradlew -ddocs integTestRunner --tests "*rollover*"`.
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By default each `[source,console]` snippet runs as its own isolated test. You
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can manipulate the test execution in the following ways:
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* `// TEST`: Explicitly marks a snippet as a test. Snippets marked this way
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are tests even if they don't have `[source,console]` but usually `// TEST` is
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used for its modifiers:
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* `// TEST[s/foo/bar/]`: Replace `foo` with `bar` in the generated test. This
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should be used sparingly because it makes the snippet "lie". Sometimes,
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though, you can use it to make the snippet more clear. Keep in mind that
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if there are multiple substitutions then they are applied in the order that
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they are defined.
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* `// TEST[catch:foo]`: Used to expect errors in the requests. Replace `foo`
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with `request` to expect a 400 error, for example. If the snippet contains
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multiple requests then only the last request will expect the error.
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* `// TEST[continued]`: Continue the test started in the last snippet. Between
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tests the nodes are cleaned: indexes are removed, etc. This prevents that
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from happening between snippets because the two snippets are a single test.
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This is most useful when you have text and snippets that work together to
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tell the story of some use case because it merges the snippets (and thus the
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use case) into one big test.
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* You can't use `// TEST[continued]` immediately after `// TESTSETUP` or
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`// TEARDOWN`.
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* `// TEST[skip:reason]`: Skip this test. Replace `reason` with the actual
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reason to skip the test. Snippets without `// TEST` or `// CONSOLE` aren't
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considered tests anyway but this is useful for explicitly documenting the
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reason why the test shouldn't be run.
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* `// TEST[setup:name]`: Run some setup code before running the snippet. This
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is useful for creating and populating indexes used in the snippet. The setup
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code is defined in `docs/build.gradle`. See `// TESTSETUP` below for a
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similar feature.
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* `// TEST[warning:some warning]`: Expect the response to include a `Warning`
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header. If the response doesn't include a `Warning` header with the exact
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text then the test fails. If the response includes `Warning` headers that
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aren't expected then the test fails.
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* `[source,console-result]`: Matches this snippet against the body of the
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response of the last test. If the response is JSON then order is ignored. If
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you add `// TEST[continued]` to the snippet after `[source,console-result]`
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it will continue in the same test, allowing you to interleave requests with
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responses to check.
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* `// TESTRESPONSE`: Explicitly marks a snippet as a test response even without
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`[source,console-result]`. Similarly to `// TEST` this is mostly used for
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its modifiers.
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* You can't use `[source,console-result]` immediately after `// TESTSETUP`.
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Instead, consider using `// TEST[continued]` or rearrange your snippets.
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NOTE: Previously we only used `// TESTRESPONSE` instead of
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`[source,console-result]` so you'll see that a lot in older branches but we
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prefer `[source,console-result]` now.
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* `// TESTRESPONSE[s/foo/bar/]`: Substitutions. See `// TEST[s/foo/bar]` for
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how it works. These are much more common than `// TEST[s/foo/bar]` because
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they are useful for eliding portions of the response that are not pertinent
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to the documentation.
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* One interesting difference here is that you often want to match against
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the response from Elasticsearch. To do that you can reference the "body" of
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the response like this: `// TESTRESPONSE[s/"took": 25/"took": $body.took/]`.
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Note the `$body` string. This says "I don't expect that 25 number in the
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response, just match against what is in the response." Instead of writing
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the path into the response after `$body` you can write `$_path` which
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"figures out" the path. This is especially useful for making sweeping
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assertions like "I made up all the numbers in this example, don't compare
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them" which looks like `// TESTRESPONSE[s/\d+/$body.$_path/]`.
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* `// TESTRESPONSE[non_json]`: Add substitutions for testing responses in a
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format other than JSON. Use this after all other substitutions so it doesn't
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make other substitutions difficult.
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* `// TESTRESPONSE[skip:reason]`: Skip the assertions specified by this
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response.
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* `// TESTSETUP`: Marks this snippet as the "setup" for all other snippets in
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this file. This is a somewhat natural way of structuring documentation. You
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say "this is the data we use to explain this feature" then you add the
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snippet that you mark `// TESTSETUP` and then every snippet will turn into
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a test that runs the setup snippet first. See the "painless" docs for a file
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that puts this to good use. This is fairly similar to `// TEST[setup:name]`
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but rather than the setup defined in `docs/build.gradle` the setup is defined
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right in the documentation file. In general, we should prefer `// TESTSETUP`
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over `// TEST[setup:name]` because it makes it more clear what steps have to
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be taken before the examples will work. Tip: `// TESTSETUP` can only be used
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on the first snippet of a document.
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* `// TEARDOWN`: Ends and cleans up a test series started with `// TESTSETUP` or
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`// TEST[setup:name]`. You can use `// TEARDOWN` to set up multiple tests in
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the same file.
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* `// NOTCONSOLE`: Marks this snippet as neither `// CONSOLE` nor
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`// TESTRESPONSE`, excluding it from the list of unconverted snippets. We
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should only use this for snippets that *are* JSON but are *not* responses or
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requests.
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In addition to the standard CONSOLE syntax these snippets can contain blocks
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of yaml surrounded by markers like this:
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```
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startyaml
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- compare_analyzers: {index: thai_example, first: thai, second: rebuilt_thai}
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endyaml
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```
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This allows slightly more expressive testing of the snippets. Since that syntax
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is not supported by `[source,console]` the usual way to incorporate it is with a
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`// TEST[s//]` marker like this:
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```
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// TEST[s/\n$/\nstartyaml\n - compare_analyzers: {index: thai_example, first: thai, second: rebuilt_thai}\nendyaml\n/]
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```
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Any place you can use json you can use elements like `$body.path.to.thing`
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which is replaced on the fly with the contents of the thing at `path.to.thing`
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in the last response.
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