[Tarantool-patches] [PATCH v2 7/9] box: add SQL settings to _session_settings
imeevma at tarantool.org
imeevma at tarantool.org
Mon Dec 30 19:43:15 MSK 2019
Part of #4511
@TarantoolBot document
Title: _session_settings system space
The _session_settings system space used to view or change session
settings.
This space uses a new engine. This allows us to create tuples on
the fly when the get() or select() methods are called. This
engine does not support the insert(), replace(), and delete()
methods. The only way to change the setting value is update(),
which can only be used with the "=" operation.
Because space creates a tuple on the fly, it allows us to get a
tuple without saving it anywhere. But this means that every time
we get a tuple from this system space, it is a new tuple, even if
they look the same:
tarantool> s = box.space._session_settings
tarantool> name = 'sql_default_engine'
tarantool> s:get({name}) == s:get({name})
---
- false
...
Currently, this space contains only SQL settings, since the only
session settings are SQL settings.
List of currently available session settings:
sql_default_engine
sql_defer_foreign_keys
sql_full_column_names
sql_parser_debug
sql_recursive_triggers
sql_reverse_unordered_selects
sql_select_debug
sql_vdbe_debug
The default values of these settings cannot be changed by the
user.
Debug settings are disabled by default and can only be enabled in
the debug build.
Example of usage:
tarantool> s = box.space._session_settings
-- View session settings values.
tarantool> s:get({'sql_default_engine'})
---
- ['sql_default_engine', 'memtx']
...
tarantool> s:select()
s:select()
---
- - ['sql_default_engine', 'memtx']
- ['sql_defer_foreign_keys', false]
- ['sql_full_column_names', false]
- ['sql_full_metadata', false]
- ['sql_parser_debug', false]
- ['sql_recursive_triggers', true]
- ['sql_reverse_unordered_selects', false]
- ['sql_select_debug', false]
- ['sql_vdbe_debug', false]
...
tarantool> s:select('sql_g', {iterator='LE'})
---
- - ['sql_full_metadata', false]
- ['sql_full_column_names', false]
- ['sql_defer_foreign_keys', false]
- ['sql_default_engine', 'memtx']
...
-- Change session setting value.
tarantool> s:update('sql_default_engine', {{'=', 'value', 'vinyl'}})
---
- ['sql_default_engine', 'vinyl']
...
---
src/box/errcode.h | 1 +
src/box/session_settings.h | 1 +
src/box/sql.c | 5 +
src/box/sql/build.c | 194 +++++++++++++++++
...h-4511-access-settings-from-any-frontend.result | 238 ++++++++++++++++++---
...4511-access-settings-from-any-frontend.test.lua | 105 +++++++--
test/box/misc.result | 1 +
7 files changed, 492 insertions(+), 53 deletions(-)
diff --git a/src/box/errcode.h b/src/box/errcode.h
index ca0cd2d..f1dde91 100644
--- a/src/box/errcode.h
+++ b/src/box/errcode.h
@@ -261,6 +261,7 @@ struct errcode_record {
/*206 */_(ER_SQL_PARSER_GENERIC_WITH_POS,"At line %d at or near position %d: %s") \
/*207 */_(ER_REPLICA_NOT_ANON, "Replica '%s' is not anonymous and cannot register.") \
/*208 */_(ER_CANNOT_REGISTER, "Couldn't find an instance to register this replica on.") \
+ /*209 */_(ER_SESSION_SETTING_INVALID_VALUE, "Session setting %s expected a value of type %s") \
/*
* !IMPORTANT! Please follow instructions at start of the file
diff --git a/src/box/session_settings.h b/src/box/session_settings.h
index 7415e0e..25490a7 100644
--- a/src/box/session_settings.h
+++ b/src/box/session_settings.h
@@ -41,6 +41,7 @@
* type list is used by setting iterators.
*/
enum session_setting_type {
+ SESSION_SETTING_SQL,
session_setting_type_MAX,
};
diff --git a/src/box/sql.c b/src/box/sql.c
index 7c1035c..900c716 100644
--- a/src/box/sql.c
+++ b/src/box/sql.c
@@ -63,9 +63,14 @@ static const uint32_t default_sql_flags = SQL_EnableTrigger
| SQL_AutoIndex
| SQL_RecTriggers;
+extern void
+sql_session_settings_init();
+
void
sql_init()
{
+ sql_session_settings_init();
+
default_flags |= default_sql_flags;
current_session()->sql_flags |= default_sql_flags;
diff --git a/src/box/sql/build.c b/src/box/sql/build.c
index 314651b..bc50ecb 100644
--- a/src/box/sql/build.c
+++ b/src/box/sql/build.c
@@ -58,6 +58,7 @@
#include "box/coll_id_cache.h"
#include "box/user.h"
#include "box/constraint_id.h"
+#include "box/session_settings.h"
void
sql_finish_coding(struct Parse *parse_context)
@@ -3308,3 +3309,196 @@ sql_fieldno_by_name(struct Parse *parse_context, struct Expr *field_name,
*fieldno = i;
return 0;
}
+
+/**
+ * Identifiers of all SQL session setings. The identifier of the
+ * option is equal to its place in the sorted list of session
+ * options of current module.
+ *
+ * It is IMPORTANT that these options are sorted by name. If this
+ * is not the case, the result returned by the _session_settings
+ * space iterator will not be sorted properly.
+ */
+enum {
+ SQL_SESSION_SETTING_DEFAULT_ENGINE = 0,
+ SQL_SESSION_SETTING_DEFER_FOREIGN_KEYS,
+ SQL_SESSION_SETTING_FULL_COLUMN_NAMES,
+ SQL_SESSION_SETTING_FULL_METADATA,
+ SQL_SESSION_SETTING_PARSER_DEBUG,
+ SQL_SESSION_SETTING_RECURSIVE_TRIGGERS,
+ SQL_SESSION_SETTING_REVERSE_UNORDERED_SELECTS,
+ SQL_SESSION_SETTING_SELECT_DEBUG,
+ SQL_SESSION_SETTING_VDBE_DEBUG,
+ sql_session_setting_MAX,
+};
+
+static const char *sql_session_setting_strs[sql_session_setting_MAX] = {
+ "sql_default_engine",
+ "sql_defer_foreign_keys",
+ "sql_full_column_names",
+ "sql_full_metadata",
+ "sql_parser_debug",
+ "sql_recursive_triggers",
+ "sql_reverse_unordered_selects",
+ "sql_select_debug",
+ "sql_vdbe_debug",
+};
+
+/**
+ * A local structure that allows to establish a connection between
+ * parameter and its field type and mask, if it has one.
+ */
+struct sql_option_metadata
+{
+ uint32_t field_type;
+ uint32_t mask;
+};
+
+/**
+ * Variable that contains SQL session option field types and masks
+ * if they have one or 0 if don't have.
+ *
+ * It is IMPORTANT that these options sorted by name.
+ */
+static struct sql_option_metadata sql_session_opts[] = {
+ /** SQL_SESSION_SETTING_DEFAULT_ENGINE */
+ {FIELD_TYPE_STRING, 0},
+ /** SQL_SESSION_SETTING_DEFER_FOREIGN_KEYS */
+ {FIELD_TYPE_BOOLEAN, SQL_DeferFKs},
+ /** SQL_SESSION_SETTING_FULL_COLUMN_NAMES */
+ {FIELD_TYPE_BOOLEAN, SQL_FullColNames},
+ /** SQL_SESSION_SETTING_FULL_METADATA */
+ {FIELD_TYPE_BOOLEAN, SQL_FullMetadata},
+ /** SQL_SESSION_SETTING_PARSER_DEBUG */
+ {FIELD_TYPE_BOOLEAN, SQL_SqlTrace | PARSER_TRACE_FLAG},
+ /** SQL_SESSION_SETTING_RECURSIVE_TRIGGERS */
+ {FIELD_TYPE_BOOLEAN, SQL_RecTriggers},
+ /** SQL_SESSION_SETTING_REVERSE_UNORDERED_SELECTS */
+ {FIELD_TYPE_BOOLEAN, SQL_ReverseOrder},
+ /** SQL_SESSION_SETTING_SELECT_DEBUG */
+ {FIELD_TYPE_BOOLEAN,
+ SQL_SqlTrace | SQL_SelectTrace | SQL_WhereTrace},
+ /** SQL_SESSION_SETTING_VDBE_DEBUG */
+ {FIELD_TYPE_BOOLEAN,
+ SQL_SqlTrace | SQL_VdbeListing | SQL_VdbeTrace},
+};
+
+static void
+sql_session_setting_get(int id, const char **mp_pair, const char **mp_pair_end)
+{
+ assert(id >= 0 && id < sql_session_setting_MAX);
+ struct session *session = current_session();
+ uint32_t flags = session->sql_flags;
+ struct sql_option_metadata *opt = &sql_session_opts[id];
+ uint32_t mask = opt->mask;
+ const char *name = sql_session_setting_strs[id];
+ size_t name_len = strlen(name);
+ size_t engine_len;
+ const char *engine;
+ size_t size = mp_sizeof_array(2) + mp_sizeof_str(name_len);
+ /*
+ * Currently, SQL session settings are of a boolean or
+ * string type.
+ */
+ bool is_bool = opt->field_type == FIELD_TYPE_BOOLEAN;
+ if (is_bool) {
+ size += mp_sizeof_bool(true);
+ } else {
+ assert(id == SQL_SESSION_SETTING_DEFAULT_ENGINE);
+ engine = sql_storage_engine_strs[session->sql_default_engine];
+ engine_len = strlen(engine);
+ size += mp_sizeof_str(engine_len);
+ }
+
+ char *pos = static_alloc(size);
+ assert(pos != NULL);
+ char *pos_end = mp_encode_array(pos, 2);
+ pos_end = mp_encode_str(pos_end, name, name_len);
+ if (is_bool)
+ pos_end = mp_encode_bool(pos_end, (flags & mask) == mask);
+ else
+ pos_end = mp_encode_str(pos_end, engine, engine_len);
+ *mp_pair = pos;
+ *mp_pair_end = pos_end;
+}
+
+static int
+sql_set_boolean_option(int id, bool value)
+{
+ struct session *session = current_session();
+ struct sql_option_metadata *option = &sql_session_opts[id];
+ assert(option->field_type == FIELD_TYPE_BOOLEAN);
+#ifdef NDEBUG
+ if ((session->sql_flags & SQL_SqlTrace) == 0) {
+ if (value)
+ session->sql_flags |= option->mask;
+ else
+ session->sql_flags &= ~option->mask;
+ }
+#else
+ if (value)
+ session->sql_flags |= option->mask;
+ else
+ session->sql_flags &= ~option->mask;
+ if (id == SQL_SESSION_SETTING_PARSER_DEBUG) {
+ if (value)
+ sqlParserTrace(stdout, "parser: ");
+ else
+ sqlParserTrace(NULL, NULL);
+ }
+#endif
+ return 0;
+}
+
+static int
+sql_set_string_option(int id, const char *value)
+{
+ assert(sql_session_opts[id].field_type = FIELD_TYPE_STRING);
+ assert(id == SQL_SESSION_SETTING_DEFAULT_ENGINE);
+ (void)id;
+ enum sql_storage_engine engine = STR2ENUM(sql_storage_engine, value);
+ if (engine == sql_storage_engine_MAX) {
+ diag_set(ClientError, ER_NO_SUCH_ENGINE, value);
+ return -1;
+ }
+ current_session()->sql_default_engine = engine;
+ return 0;
+}
+
+static int
+sql_session_setting_set(int id, const char *mp_value)
+{
+ assert(id >= 0 && id < sql_session_setting_MAX);
+ enum mp_type mtype = mp_typeof(*mp_value);
+ enum field_type stype = sql_session_opts[id].field_type;
+ uint32_t len;
+ const char *tmp;
+ switch(stype) {
+ case FIELD_TYPE_BOOLEAN:
+ if (mtype != MP_BOOL)
+ break;
+ return sql_set_boolean_option(id, mp_decode_bool(&mp_value));
+ case FIELD_TYPE_STRING:
+ if (mtype != MP_STR)
+ break;
+ tmp = mp_decode_str(&mp_value, &len);
+ tmp = tt_cstr(tmp, len);
+ return sql_set_string_option(id, tmp);
+ default:
+ unreachable();
+ }
+ diag_set(ClientError, ER_SESSION_SETTING_INVALID_VALUE,
+ sql_session_setting_strs[id], field_type_strs[stype]);
+ return -1;
+}
+
+void
+sql_session_settings_init()
+{
+ struct session_setting_module *module =
+ &session_setting_modules[SESSION_SETTING_SQL];
+ module->settings = sql_session_setting_strs;
+ module->setting_count = sql_session_setting_MAX;
+ module->get = sql_session_setting_get;
+ module->set = sql_session_setting_set;
+}
diff --git a/test/box/gh-4511-access-settings-from-any-frontend.result b/test/box/gh-4511-access-settings-from-any-frontend.result
index 7acdd95..64532a1 100644
--- a/test/box/gh-4511-access-settings-from-any-frontend.result
+++ b/test/box/gh-4511-access-settings-from-any-frontend.result
@@ -45,72 +45,242 @@ s:replace({'sql_defer_foreign_keys', true})
| - error: Session_settings space does not support replace()
| ...
--- Check get() and select(). They should return nothing for now.
-s:get({'a'})
+--
+-- Check select() method of session_settings space. Should work
+-- the same way as an ordinary space with an index of the type
+-- "TREE".
+--
+s:select()
| ---
+ | - - ['sql_default_engine', 'memtx']
+ | - ['sql_defer_foreign_keys', false]
+ | - ['sql_full_column_names', false]
+ | - ['sql_full_metadata', false]
+ | - ['sql_parser_debug', false]
+ | - ['sql_recursive_triggers', true]
+ | - ['sql_reverse_unordered_selects', false]
+ | - ['sql_select_debug', false]
+ | - ['sql_vdbe_debug', false]
| ...
-s:select()
+
+t = box.schema.space.create('settings', {format = s:format()})
+ | ---
+ | ...
+_ = t:create_index('primary')
+ | ---
+ | ...
+for _,value in s:pairs() do t:insert(value) end
+ | ---
+ | ...
+
+test_run:cmd('setopt delimiter ";"')
+ | ---
+ | - true
+ | ...
+function check_sorting(ss, ts, key)
+ local iterators_list = {'ALL', 'REQ', 'EQ', 'GE', 'GT', 'LE', 'LT'}
+ for _, it in pairs(iterators_list) do
+ local view_space = ss:select({key}, {iterator = it})
+ local test_space = ts:select({key}, {iterator = it})
+ for key, value in pairs(view_space) do
+ if test_space[key].name ~= value.name then
+ return {
+ err = 'bad sorting', type = it,
+ exp = test_space[key].name, got = value.name
+ }
+ end
+ end
+ end
+end;
+ | ---
+ | ...
+test_run:cmd('setopt delimiter ""');
+ | ---
+ | - true
+ | ...
+
+check_sorting(s, t)
+ | ---
+ | ...
+check_sorting(s, t, 'abcde')
+ | ---
+ | ...
+check_sorting(s, t, 'sql_d')
+ | ---
+ | ...
+check_sorting(s, t, 'sql_v')
+ | ---
+ | ...
+check_sorting(s, t, 'sql_defer_foreign_keys')
+ | ---
+ | ...
+
+t:drop()
+ | ---
+ | ...
+
+-- Check get() method of session_settings space.
+s:get({'sql_defer_foreign_keys'})
+ | ---
+ | - ['sql_defer_foreign_keys', false]
+ | ...
+s:get({'sql_recursive_triggers'})
+ | ---
+ | - ['sql_recursive_triggers', true]
+ | ...
+s:get({'sql_reverse_unordered_selects'})
+ | ---
+ | - ['sql_reverse_unordered_selects', false]
+ | ...
+s:get({'sql_default_engine'})
+ | ---
+ | - ['sql_default_engine', 'memtx']
+ | ...
+s:get({'abcd'})
| ---
- | - []
| ...
-s:select({}, {iterator='EQ'})
+
+-- Check pairs() method of session_settings space.
+t = {}
| ---
- | - []
| ...
-s:select({}, {iterator='ALL'})
+for key, value in s:pairs() do table.insert(t, {key, value}) end
| ---
- | - []
| ...
-s:select({}, {iterator='GE'})
+#t == s:count()
| ---
- | - []
+ | - true
| ...
-s:select({}, {iterator='GT'})
+
+-- Check update() method of session_settings space.
+
+-- Correct updates.
+s:update('sql_defer_foreign_keys', {{'=', 'value', true}})
| ---
- | - []
+ | - ['sql_defer_foreign_keys', true]
| ...
-s:select({}, {iterator='REQ'})
+s:update({'sql_defer_foreign_keys'}, {{'=', 2, false}})
| ---
- | - []
+ | - ['sql_defer_foreign_keys', false]
| ...
-s:select({}, {iterator='LE'})
+s:update('sql_default_engine', {{'=', 2, 'vinyl'}})
| ---
- | - []
+ | - ['sql_default_engine', 'vinyl']
| ...
-s:select({}, {iterator='LT'})
+s:update('sql_default_engine', {{':', 'value', 1, 5, 'memtx'}})
| ---
- | - []
+ | - ['sql_default_engine', 'memtx']
| ...
-s:select({'a'}, {iterator='EQ'})
+s:update('a', {{'=', 2, 1}})
| ---
- | - []
| ...
-s:select({'a'}, {iterator='ALL'})
+
+-- Inorrect updates.
+s:update({{'sql_defer_foreign_keys'}}, {{'=', 'value', true}})
| ---
- | - []
+ | - error: 'Supplied key type of part 0 does not match index part type: expected string'
| ...
-s:select({'a'}, {iterator='GE'})
+
+s:update('sql_defer_foreign_keys', {'=', 'value', true})
| ---
- | - []
+ | - error: Illegal parameters, update operation must be an array {op,..}
| ...
-s:select({'a'}, {iterator='GT'})
+s:update('sql_defer_foreign_keys', {{'=', 'value', true}, {'=', 2, true}})
| ---
- | - []
+ | - ['sql_defer_foreign_keys', true]
| ...
-s:select({'a'}, {iterator='REQ'})
+s:update('sql_defer_foreign_keys', {{}})
| ---
- | - []
+ | - error: Illegal parameters, update operation must be an array {op,..}, got empty
+ | array
| ...
-s:select({'a'}, {iterator='LE'})
+s:update('sql_defer_foreign_keys', {{'='}})
| ---
- | - []
+ | - error: Unknown UPDATE operation
| ...
-s:select({'a'}, {iterator='LT'})
+s:update('sql_defer_foreign_keys', {{'=', 'value'}})
| ---
- | - []
+ | - error: Unknown UPDATE operation
+ | ...
+s:update('sql_defer_foreign_keys', {{'=', 'value', true, 1}})
+ | ---
+ | - error: Unknown UPDATE operation
| ...
--- Currently there is nothing to update, but update() should work.
-s:update('some_option', {{'=', 'value', true}})
+s:update('sql_defer_foreign_keys', {{'+', 'value', 2}})
+ | ---
+ | - error: 'Argument type in operation ''+'' on field ''value'' does not match field
+ | type: expected a number'
+ | ...
+s:update('sql_defer_foreign_keys', {{'-', 'value', 2}})
+ | ---
+ | - error: 'Argument type in operation ''-'' on field ''value'' does not match field
+ | type: expected a number'
+ | ...
+s:update('sql_defer_foreign_keys', {{'&', 'value', 2}})
+ | ---
+ | - error: 'Argument type in operation ''&'' on field ''value'' does not match field
+ | type: expected a positive integer'
+ | ...
+s:update('sql_defer_foreign_keys', {{'|', 'value', 2}})
+ | ---
+ | - error: 'Argument type in operation ''|'' on field ''value'' does not match field
+ | type: expected a positive integer'
+ | ...
+s:update('sql_defer_foreign_keys', {{'^', 'value', 2}})
+ | ---
+ | - error: 'Argument type in operation ''^'' on field ''value'' does not match field
+ | type: expected a positive integer'
+ | ...
+s:update('sql_defer_foreign_keys', {{'!', 'value', 2}})
+ | ---
+ | - error: Tuple field count 3 does not match space field count 2
+ | ...
+s:update('sql_defer_foreign_keys', {{'#', 'value', 2}})
+ | ---
+ | - error: Tuple field count 1 does not match space field count 2
+ | ...
+s:update('sql_defer_foreign_keys', {{1, 'value', true}})
+ | ---
+ | - error: Illegal parameters, update operation name must be a string
+ | ...
+s:update('sql_defer_foreign_keys', {{{1}, 'value', true}})
+ | ---
+ | - error: Illegal parameters, update operation name must be a string
+ | ...
+
+s:update('sql_defer_foreign_keys', {{'=', {'value'}, true}})
+ | ---
+ | - error: Illegal parameters, field id must be a number or a string
+ | ...
+s:update('sql_defer_foreign_keys', {{'=', 1, 'new_key'}})
+ | ---
+ | - error: Attempt to modify a tuple field which is part of index 'primary' in space
+ | '_session_settings'
+ | ...
+s:update('sql_defer_foreign_keys', {{'=', 'name', 'new_key'}})
+ | ---
+ | - error: Attempt to modify a tuple field which is part of index 'primary' in space
+ | '_session_settings'
+ | ...
+s:update('sql_defer_foreign_keys', {{'=', 3, true}})
+ | ---
+ | - error: Tuple field count 3 does not match space field count 2
+ | ...
+s:update('sql_defer_foreign_keys', {{'=', 'some text', true}})
+ | ---
+ | - error: Field 'some text' was not found in the tuple
+ | ...
+
+s:update('sql_defer_foreign_keys', {{'=', 'value', 1}})
+ | ---
+ | - error: Session setting sql_defer_foreign_keys expected a value of type boolean
+ | ...
+s:update('sql_defer_foreign_keys', {{'=', 'value', {1}}})
+ | ---
+ | - error: Session setting sql_defer_foreign_keys expected a value of type boolean
+ | ...
+s:update('sql_defer_foreign_keys', {{'=', 'value', '1'}})
| ---
+ | - error: Session setting sql_defer_foreign_keys expected a value of type boolean
| ...
diff --git a/test/box/gh-4511-access-settings-from-any-frontend.test.lua b/test/box/gh-4511-access-settings-from-any-frontend.test.lua
index d27fec3..3668749 100644
--- a/test/box/gh-4511-access-settings-from-any-frontend.test.lua
+++ b/test/box/gh-4511-access-settings-from-any-frontend.test.lua
@@ -19,23 +19,90 @@ s:insert({'a', 1})
s:delete({'b'})
s:replace({'sql_defer_foreign_keys', true})
--- Check get() and select(). They should return nothing for now.
-s:get({'a'})
+--
+-- Check select() method of session_settings space. Should work
+-- the same way as an ordinary space with an index of the type
+-- "TREE".
+--
s:select()
-s:select({}, {iterator='EQ'})
-s:select({}, {iterator='ALL'})
-s:select({}, {iterator='GE'})
-s:select({}, {iterator='GT'})
-s:select({}, {iterator='REQ'})
-s:select({}, {iterator='LE'})
-s:select({}, {iterator='LT'})
-s:select({'a'}, {iterator='EQ'})
-s:select({'a'}, {iterator='ALL'})
-s:select({'a'}, {iterator='GE'})
-s:select({'a'}, {iterator='GT'})
-s:select({'a'}, {iterator='REQ'})
-s:select({'a'}, {iterator='LE'})
-s:select({'a'}, {iterator='LT'})
-
--- Currently there is nothing to update, but update() should work.
-s:update('some_option', {{'=', 'value', true}})
+
+t = box.schema.space.create('settings', {format = s:format()})
+_ = t:create_index('primary')
+for _,value in s:pairs() do t:insert(value) end
+
+test_run:cmd('setopt delimiter ";"')
+function check_sorting(ss, ts, key)
+ local iterators_list = {'ALL', 'REQ', 'EQ', 'GE', 'GT', 'LE', 'LT'}
+ for _, it in pairs(iterators_list) do
+ local view_space = ss:select({key}, {iterator = it})
+ local test_space = ts:select({key}, {iterator = it})
+ for key, value in pairs(view_space) do
+ if test_space[key].name ~= value.name then
+ return {
+ err = 'bad sorting', type = it,
+ exp = test_space[key].name, got = value.name
+ }
+ end
+ end
+ end
+end;
+test_run:cmd('setopt delimiter ""');
+
+check_sorting(s, t)
+check_sorting(s, t, 'abcde')
+check_sorting(s, t, 'sql_d')
+check_sorting(s, t, 'sql_v')
+check_sorting(s, t, 'sql_defer_foreign_keys')
+
+t:drop()
+
+-- Check get() method of session_settings space.
+s:get({'sql_defer_foreign_keys'})
+s:get({'sql_recursive_triggers'})
+s:get({'sql_reverse_unordered_selects'})
+s:get({'sql_default_engine'})
+s:get({'abcd'})
+
+-- Check pairs() method of session_settings space.
+t = {}
+for key, value in s:pairs() do table.insert(t, {key, value}) end
+#t == s:count()
+
+-- Check update() method of session_settings space.
+
+-- Correct updates.
+s:update('sql_defer_foreign_keys', {{'=', 'value', true}})
+s:update({'sql_defer_foreign_keys'}, {{'=', 2, false}})
+s:update('sql_default_engine', {{'=', 2, 'vinyl'}})
+s:update('sql_default_engine', {{':', 'value', 1, 5, 'memtx'}})
+s:update('a', {{'=', 2, 1}})
+
+-- Inorrect updates.
+s:update({{'sql_defer_foreign_keys'}}, {{'=', 'value', true}})
+
+s:update('sql_defer_foreign_keys', {'=', 'value', true})
+s:update('sql_defer_foreign_keys', {{'=', 'value', true}, {'=', 2, true}})
+s:update('sql_defer_foreign_keys', {{}})
+s:update('sql_defer_foreign_keys', {{'='}})
+s:update('sql_defer_foreign_keys', {{'=', 'value'}})
+s:update('sql_defer_foreign_keys', {{'=', 'value', true, 1}})
+
+s:update('sql_defer_foreign_keys', {{'+', 'value', 2}})
+s:update('sql_defer_foreign_keys', {{'-', 'value', 2}})
+s:update('sql_defer_foreign_keys', {{'&', 'value', 2}})
+s:update('sql_defer_foreign_keys', {{'|', 'value', 2}})
+s:update('sql_defer_foreign_keys', {{'^', 'value', 2}})
+s:update('sql_defer_foreign_keys', {{'!', 'value', 2}})
+s:update('sql_defer_foreign_keys', {{'#', 'value', 2}})
+s:update('sql_defer_foreign_keys', {{1, 'value', true}})
+s:update('sql_defer_foreign_keys', {{{1}, 'value', true}})
+
+s:update('sql_defer_foreign_keys', {{'=', {'value'}, true}})
+s:update('sql_defer_foreign_keys', {{'=', 1, 'new_key'}})
+s:update('sql_defer_foreign_keys', {{'=', 'name', 'new_key'}})
+s:update('sql_defer_foreign_keys', {{'=', 3, true}})
+s:update('sql_defer_foreign_keys', {{'=', 'some text', true}})
+
+s:update('sql_defer_foreign_keys', {{'=', 'value', 1}})
+s:update('sql_defer_foreign_keys', {{'=', 'value', {1}}})
+s:update('sql_defer_foreign_keys', {{'=', 'value', '1'}})
diff --git a/test/box/misc.result b/test/box/misc.result
index 705f849..132df37 100644
--- a/test/box/misc.result
+++ b/test/box/misc.result
@@ -557,6 +557,7 @@ t;
206: box.error.SQL_PARSER_GENERIC_WITH_POS
207: box.error.REPLICA_NOT_ANON
208: box.error.CANNOT_REGISTER
+ 209: box.error.SESSION_SETTING_INVALID_VALUE
...
test_run:cmd("setopt delimiter ''");
---
--
2.7.4
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