System test coverage for Cloud Spanner

[stephenplusplus]

From @vkedia on January 19, 2017 7:20

System tests for Cloud Spanner should cover all these scenarios:

1. Basic read,query and writes for all the data types.
2. Read with indexes, read limits, different concurrency options, range reads.
3. Reading back large amount of data (lot of rows, large rows) to exercise the stream resume, flow control and chunking logic.
4. Parameter binding in query for all the data types including nulls, null arrays, arrays containing null, array of structs, special values for double type (Nan, Infinity,-Infinity).
5. Read/modify/write using transactions.
6. Tests for admin operations such as creating/deleting a database, updating database schema, pagination for list operations.

Copied from original issue: GoogleCloudPlatform/google-cloud-node-private#20

[stephenplusplus]

From @callmehiphop on February 2, 2017 23:59

@stephenplusplus is there anything in here that we don't already cover via system tests?

[stephenplusplus]

Bold = needs tests

1. Basic read,query and writes for all the data types. (We're missing null)
2. Read with indexes, read limits, different concurrency options, range reads.
3. Reading back large amount of data (lot of rows, large rows) to exercise the stream resume, flow control and chunking logic. (only tested in unit tests)
4. Parameter binding in query for all the data types including nulls, null arrays, arrays containing null, array of structs, special values for double type (Nan, Infinity,-Infinity).
5. Read/modify/write using transactions. (Not sure about the transactions)
6. Tests for admin operations such as creating/deleting a database, updating database schema, pagination for list operations.

[Chipintoza]

It will be good if you add some tests for this issues #2176