Add test scripts

[t3t5u]

Test conditions:

Branches/tags:

• Before Fix: https://github.com/embulk/embulk-output-jdbc/tree/v0.10.5
• After Fix: https://github.com/trocco-io/embulk-output-jdbc/tree/fix/nstring_to_json_to_origin

Plugin types:

• embulk-output-mysql
• embulk-output-postgresql
• embulk-output-redshift
• embulk-output-sqlserver

JDBC driver versions:

• Plugin's default
• Latest version of each database (See test scripts for actual version)

Test results:

Before Fix:

In mysql, postgresql, redshift, and sqlserver, if the input as json and set value_type of column_options to nstring, the column will be null.

{"test_boolean":true,"test_long":123,"test_double":1.23,"test_string":"あいうえお","test_timestamp":"1999-12-31 23:59:59.000000 +0000","test_json":{"キー":"値"},"test_json_text":{"キー":"値"},"test_json_string":{"キー":"値"},"test_json_nstring":null}
{"test_boolean":false,"test_long":456,"test_double":4.56,"test_string":"かきくけこ","test_timestamp":"2000-01-01 00:00:00.000000 +0000","test_json":[{"キー1":"値1"},{"キー2":"値2"}],"test_json_text":[{"キー1":"値1"},{"キー2":"値2"}],"test_json_string":[{"キー1":"値1"},{"キー2":"値2"}],"test_json_nstring":null}
{"test_boolean":null,"test_long":null,"test_double":null,"test_string":null,"test_timestamp":null,"test_json":null,"test_json_text":null,"test_json_string":null,"test_json_nstring":null}
{"test_boolean":null,"test_long":null,"test_double":null,"test_string":null,"test_timestamp":null,"test_json":12345,"test_json_text":12345,"test_json_string":12345,"test_json_nstring":null}
{"test_boolean":null,"test_long":null,"test_double":null,"test_string":null,"test_timestamp":null,"test_json":123.45,"test_json_text":123.45,"test_json_string":123.45,"test_json_nstring":null}
{"test_boolean":null,"test_long":null,"test_double":null,"test_string":null,"test_timestamp":null,"test_json":"hoge","test_json_text":"hoge","test_json_string":"hoge","test_json_nstring":null}

Also, in sqlserver, if the input as json, the column will be null as default, even if value_type is not set.

Additionally, in sqlserver, Unicode or Multibyte strings are garbled, if the column type is TEXT or VARCHAR (this is a SQL Server specification).
UPDATE: If VARCHAR with COLLATE Latin1_General_100_CI_AS_SC_UTF8, strings will not be garbled.

{"test_boolean":true,"test_long":123,"test_double":1.23,"test_string":"あいうえお","test_timestamp":"1999-12-31 23:59:59.000000 +0000","test_json":null,"test_json_text":{"??":"?"},"test_json_string":{"キー":"値"},"test_json_nstring":null}
{"test_boolean":false,"test_long":456,"test_double":4.56,"test_string":"かきくけこ","test_timestamp":"2000-01-01 00:00:00.000000 +0000","test_json":null,"test_json_text":[{"??1":"?1"},{"??2":"?2"}],"test_json_string":[{"キー1":"値1"},{"キー2":"値2"}],"test_json_nstring":null}
{"test_boolean":null,"test_long":null,"test_double":null,"test_string":null,"test_timestamp":null,"test_json":null,"test_json_text":null,"test_json_string":null,"test_json_nstring":null}
{"test_boolean":null,"test_long":null,"test_double":null,"test_string":null,"test_timestamp":null,"test_json":null,"test_json_text":12345,"test_json_string":12345,"test_json_nstring":null}
{"test_boolean":null,"test_long":null,"test_double":null,"test_string":null,"test_timestamp":null,"test_json":null,"test_json_text":123.45,"test_json_string":123.45,"test_json_nstring":null}
{"test_boolean":null,"test_long":null,"test_double":null,"test_string":null,"test_timestamp":null,"test_json":null,"test_json_text":"hoge","test_json_string":"hoge","test_json_nstring":null}

After Fix:

If the input as json, the column will not be null, even if set value_type of column_options to nstring.

{"test_boolean":true,"test_long":123,"test_double":1.23,"test_string":"あいうえお","test_timestamp":"1999-12-31 23:59:59.000000 +0000","test_json":{"キー":"値"},"test_json_text":{"キー":"値"},"test_json_string":{"キー":"値"},"test_json_nstring":{"キー":"値"}}
{"test_boolean":false,"test_long":456,"test_double":4.56,"test_string":"かきくけこ","test_timestamp":"2000-01-01 00:00:00.000000 +0000","test_json":[{"キー1":"値1"},{"キー2":"値2"}],"test_json_text":[{"キー1":"値1"},{"キー2":"値2"}],"test_json_string":[{"キー1":"値1"},{"キー2":"値2"}],"test_json_nstring":[{"キー1":"値1"},{"キー2":"値2"}]}
{"test_boolean":null,"test_long":null,"test_double":null,"test_string":null,"test_timestamp":null,"test_json":null,"test_json_text":null,"test_json_string":null,"test_json_nstring":null}
{"test_boolean":null,"test_long":null,"test_double":null,"test_string":null,"test_timestamp":null,"test_json":12345,"test_json_text":12345,"test_json_string":12345,"test_json_nstring":12345}
{"test_boolean":null,"test_long":null,"test_double":null,"test_string":null,"test_timestamp":null,"test_json":123.45,"test_json_text":123.45,"test_json_string":123.45,"test_json_nstring":123.45}
{"test_boolean":null,"test_long":null,"test_double":null,"test_string":null,"test_timestamp":null,"test_json":"hoge","test_json_text":"hoge","test_json_string":"hoge","test_json_nstring":"hoge"}

However, in sqlserver, Unicode or Multibyte strings are still garbled, if the column type is TEXT or VARCHAR.
UPDATE: If VARCHAR with COLLATE Latin1_General_100_CI_AS_SC_UTF8, strings will not be garbled.

{"test_boolean":true,"test_long":123,"test_double":1.23,"test_string":"あいうえお","test_timestamp":"1999-12-31 23:59:59.000000 +0000","test_json":{"キー":"値"},"test_json_text":{"??":"?"},"test_json_string":{"キー":"値"},"test_json_nstring":{"キー":"値"}}
{"test_boolean":false,"test_long":456,"test_double":4.56,"test_string":"かきくけこ","test_timestamp":"2000-01-01 00:00:00.000000 +0000","test_json":[{"キー1":"値1"},{"キー2":"値2"}],"test_json_text":[{"??1":"?1"},{"??2":"?2"}],"test_json_string":[{"キー1":"値1"},{"キー2":"値2"}],"test_json_nstring":[{"キー1":"値1"},{"キー2":"値2"}]}
{"test_boolean":null,"test_long":null,"test_double":null,"test_string":null,"test_timestamp":null,"test_json":null,"test_json_text":null,"test_json_string":null,"test_json_nstring":null}
{"test_boolean":null,"test_long":null,"test_double":null,"test_string":null,"test_timestamp":null,"test_json":12345,"test_json_text":12345,"test_json_string":12345,"test_json_nstring":12345}
{"test_boolean":null,"test_long":null,"test_double":null,"test_string":null,"test_timestamp":null,"test_json":123.45,"test_json_text":123.45,"test_json_string":123.45,"test_json_nstring":123.45}
{"test_boolean":null,"test_long":null,"test_double":null,"test_string":null,"test_timestamp":null,"test_json":"hoge","test_json_text":"hoge","test_json_string":"hoge","test_json_nstring":"hoge"}