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bsrikanth-mariadb a4ae3f23fd MDEV-36986: Support tracing array of primitive types
Json_writer had two separate code paths: add_unquoted_str() for
numbers/bool/null, and add_escaped_str() which added the surrounding
quotes itself for strings. Single_line_formatting_helper, which
buffers consecutive array/object elements to decide if they fit on
one line, assumed only strings could ever be buffered and always
wrapped the flushed values in quotes. As a result, arrays of numbers
(e.g. "depends_on_map_bits", "rec_per_key") were incorrectly rendered
with their elements quoted as strings.

Unify both paths into add_escaped_quoted_str(): the caller now hands
over bytes that are already in their final on-the-wire form. String
escaping (json_escape_to_string) writes its own surrounding quotes,
while numbers/bool/null are passed through unquoted, so the one-line
helper just concatenates the buffered payloads on flush instead of
adding quotes itself. A DBUG_ASSERT in add_escaped_quoted_str() now
checks that every payload is already a quoted string or a bare
number/bool/null token, so a caller that violates the contract trips
an assertion in debug builds instead of silently producing invalid
JSON.

Also:
- Fix Json_writer_array::add(ulonglong)/(size_t), which went through
  add_ll() with a cast to longlong and corrupted large unsigned
  values (e.g. ULLONG_MAX); route them through add_ull() instead.
- Fix mysql-test/include/opt_context_schema.inc: "subquery_runs" was
  nested inside the preceding object instead of being a sibling
  member, and "rec_per_key" items are now declared as "number" to
  match the corrected output.
- Update recorded .result files for opt_trace, opt_context_*, and
  subselect_mat_analyze_json to reflect numbers/booleans no longer
  being quoted inside JSON arrays.
- Extend unittest/sql/my_json_writer-t.cc with coverage for arrays
  of primitives: plain integers, mixed types, sizes, multi-line
  arrays, values flushed before a nested object, strings that were
  already escaped by the one-line buffer, and invalid utf8mb4 input
  through add_str().
- Rewrite the "multi-line array of integers" test to actually
  overflow the one-line buffer (9 seven-digit numbers instead of 7),
  since the previous version fit on one line and never exercised the
  element-per-line flush path it claimed to test.
- Drop the now-redundant single-argument add_escaped_quoted_str()
  overload; all call sites already know their length.
- Update json_escape_to_string()'s doc comments (my_json_writer.h,
  sql_json_lib.h) to state that it quotes its output, not just
  escapes it.
2026-10-01 13:36:14 +05:30
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2026-08-12 14:31:57 +03:00
2026-08-20 08:27:14 +02:00
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This directory contains test suites for the MariaDB server. To run
currently existing test cases, execute ./mysql-test-run in this directory.

Some tests are known to fail on some platforms or be otherwise unreliable.
In the file collections/smoke_test there is a list of tests that are
expected to be stable.

In general you do not have to do "make install", and you can have
a co-existing MariaDB installation, the tests will not conflict with it.
To run the tests in a source directory, you must do "make" first.

In Red Hat distributions, you should run the script as user "mysql".
The user is created with nologin shell, so the best bet is something like
  # su -
  # cd /usr/share/mariadb-test
  # su -s /bin/bash mysql -c ./mysql-test-run

This will use the installed MariaDB executables, but will run a private
copy of the server process (using data files within /usr/share/mariadb-test),
so you need not start the mysqld service beforehand.

You can omit --skip-test-list option if you want to check whether
the listed failures occur for you.

To clean up afterwards, remove the created "var" subdirectory, e.g.
  # su -s /bin/bash - mysql -c "rm -rf /usr/share/mariadb-test/var"

If tests fail on your system, please read the following manual section
for instructions on how to report the problem:

https://mariadb.com/docs/general-resources/community/community/bug-tracking/reporting-bugs

If you want to use an already running MySQL server for specific tests,
use the --extern option to mysql-test-run. Please note that in this mode,
you are expected to provide names of the tests to run.

For example, here is the command to run the "alias" and "analyze" tests
with an external server:

  # mariadb-test-run --extern socket=/tmp/mysql.sock alias analyze

To match your setup, you might need to provide other relevant options.

With no test names on the command line, mysql-test-run will attempt
to execute the default set of tests, which will certainly fail, because
many tests cannot run with an external server (they need to control the
options with which the server is started, restart the server during
execution, etc.)

You can create your own test cases. To create a test case, create a new
file in the main subdirectory using a text editor. The file should have a .test
extension. For example:

  # xemacs t/test_case_name.test

In the file, put a set of SQL statements that create some tables,
load test data, and run some queries to manipulate it.

Your test should begin by dropping the tables you are going to create and
end by dropping them again. This ensures that you can run the test over
and over again.

If you are using mysqltest commands in your test case, you should create
the result file as follows:

  # mariadb-test-run --record test_case_name

  or

  # mariadb-test --record < t/test_case_name.test

If you only have a simple test case consisting of SQL statements and
comments, you can create the result file in one of the following ways:

  # mariadb-test-run --record test_case_name

  # mariadb test < t/test_case_name.test > r/test_case_name.result

  # mariadb-test --record --database test --result-file=r/test_case_name.result < t/test_case_name.test

When this is done, take a look at r/test_case_name.result.
If the result is incorrect, you have found a bug. In this case, you should
edit the test result to the correct results so that we can verify that
the bug is corrected in future releases.

If you want to submit your test case you can send it
to developers@lists.mariadb.org or attach it to a bug report on
http://mariadb.org/jira/.

If the test case is really big or if it contains 'not public' data,
then put your .test file and .result file(s) into a tar.gz archive,
add a README that explains the problem, ftp the archive to
ftp://ftp.mariadb.org/private and submit a report to
https://mariadb.org/jira about it.

The latest information about mysql-test-run can be found at:
https://mariadb.com/docs/server/clients-and-utilities/testing-tools/mariadb-test

If you want to create .rdiff files, check
https://mariadb.com/docs/server/clients-and-utilities/testing-tools/mariadb-test/mariadb-test-auxiliary-files