dolt/integration-tests/bats/sql-charsets-collations.bats

#!/usr/bin/env bats
load $BATS_TEST_DIRNAME/helper/common.bash
load $BATS_TEST_DIRNAME/helper/query-server-common.bash

setup() {
    setup_common
}

teardown() {
    teardown_common
}

@test "sql-charsets-collations: show character set" {
    run dolt sql -q "show character set";
    [ $status -eq 0 ]
    [[ $output =~ "utf8mb4 " ]] || false
    [[ $output =~ "ascii " ]] || false
    [[ $output =~ "utf8mb4_0900_ai_ci" ]] || false
    [[ $output =~ "ascii_general_ci" ]] || false
}

@test "sql-charsets-collations: define charset and collation on a column" {
    dolt sql -q "create table german1 (c char(10) CHARACTER SET latin1 COLLATE latin1_german1_ci)"
    run dolt sql -q "show create table german1";
    [ $status -eq 0 ]
    [[ $output =~ "CHARACTER SET latin1" ]] || false
    [[ $output =~ "COLLATE latin1_german1_ci" ]] || false

    # check information_schema.COLUMNS table
    run dolt sql -q "select table_name, column_name, character_set_name, collation_name from information_schema.COLUMNS;" -r csv
    [[ "$output" =~ "german1,c,latin1,latin1_german1_ci" ]] || false
}

@test "sql-charsets-collations: define charset and collation on a table" {
    dolt sql -q "create table german1 (c char(10)) CHARACTER SET latin1 COLLATE latin1_german1_ci"
    run dolt sql -q "show create table german1";
    [ $status -eq 0 ]
    [[ $output =~ "CHARACTER SET latin1" ]] || false
    [[ $output =~ "COLLATE latin1_german1_ci" ]] || false

    # check information_schema.TABLES table
    run dolt sql -q "select table_name, table_type, table_collation from information_schema.TABLES where table_name = 'german1';" -r csv
    [[ "$output" =~ "german1,BASE TABLE,latin1_german1_ci" ]] || false
}

@test "sql-charsets-collations: define charset and collation on a database" {
    start_sql_server
    dolt sql-client -u dolt --use-db '' -P $PORT -q "CREATE DATABASE test CHARACTER SET latin1 COLLATE latin1_swedish_ci;"
    dolt sql-client -u dolt --use-db test -P $PORT -q "SELECT @@character_set_database" ";@@SESSION.character_set_database\nlatin1"
    dolt sql-client -u dolt --use-db test -P $PORT -q "SELECT @@character_set_database" ";@@SESSION.collation_database\nlatin1_swedish_ci"
    stop_sql_server
    sleep 0.5
}

@test "sql-charsets-collations: define and use a collation and charset" {
    dolt sql -q "create table german1 (c char(10) CHARACTER SET latin1 COLLATE latin1_german1_ci)"
    dolt sql -q "insert into german1 values ('Bar'), ('Bär')"
    run dolt sql -q "SELECT * FROM german1 WHERE c = 'Bär'"
    [ $status -eq 0 ]
    [[ $output =~ 'Bar' ]] || false
    [[ $output =~ 'Bär' ]] || false
    [ ${#lines[@]} -eq 6 ]

    dolt sql -q	"create table german2 (c char(10) CHARACTER SET latin1 COLLATE latin1_german2_ci)"
    dolt sql -q	"insert into german2 values ('Bar'), ('Bär')"
    run dolt sql -q "SELECT * FROM german2 WHERE c = 'Bär'"
    [ $status -eq 0 ]
    [[ $output =~ 'Bär' ]] || false
    [[ ! $output =~ 'Bar' ]] || false
    [ ${#lines[@]} -eq 5 ]
}

@test "sql-charsets-collations: modify a charset on a column" {
    dolt sql -q "create table german1 (c char(10) CHARACTER SET latin1 COLLATE latin1_german1_ci)"
    dolt sql -q	"insert into german1 values ('Bar'), ('Bär')"
    dolt sql -q "alter table german1 modify column c char(10) CHARACTER SET utf8mb4"
    run dolt sql -q "show create table german1"
    [ $status -eq 0 ]
    [[ $output =~ 'utf8mb4' ]] || false
    [[ $output =~ 'utf8mb4_0900_ai_ci' ]] || false
    [[ ! $output =~ 'latin1_german1_ci' ]] || false
    [[ ! $output =~ 'latin1' ]] || false
}

@test "sql-charsets-collations: modify a collation on a column" {
    dolt sql -q "create table german1 (c char(10) CHARACTER SET latin1 COLLATE latin1_german1_ci)"
    dolt sql -q	"insert into german1 values ('Bar'), ('Bär')"
    dolt sql -q "alter table german1 modify column c char(10) COLLATE latin1_german2_ci"
    run dolt sql -q "show create table german1"
    [ $status -eq 0 ]
    [[ $output =~ 'latin1_german2_ci' ]] || false
    [[ ! $output =~ 'latin1_german1_ci' ]] || false

    run dolt sql -q "SELECT * FROM german1 WHERE c = 'Bär'"
    [ $status -eq 0 ]
    [[ ! $output =~ 'Bar' ]] || false
    [[ $output =~ 'Bär' ]] || false
    [ ${#lines[@]} -eq 5 ]
}

@test "sql-charsets-collations: collations respected in regexes" {
    # Simple case insensitive matches in utf8mb4 do the right thing
    dolt sql -q "create table t (c char(10) character set utf8mb4 collate utf8mb4_0900_ai_ci)"
    dolt sql -q "insert into t values ('A'), ('a')"
    run dolt sql -q "select c from t where c like '%A%'"
    [ $status -eq 0 ]
    [[ $output =~ "a" ]] || false
    [[ $output =~ "A" ]] || false

    dolt sql -q "alter table t modify column c char(10) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_bin"
    run	dolt sql -q "select c from t where c like '%A%'"
    [[ ! $output =~ "a" ]] || false
    [[ $output =~ "A" ]] || false
    
    dolt sql -q "drop table t"
    
    # Outside of ascii, no such luck
    dolt sql -q "create table t (c varchar(100) character set utf8mb4 collate utf8mb4_unicode_ci)"
    dolt sql -q "insert into t values ('schön'), ('schon')"
    run	dolt sql -q "select c from t where c like '%o%'"
    [ $status -eq 0 ]
    [[ $output =~ "schon" ]] || false
    [[ $output =~ "schön" ]] || false
}