System tests for low angle analysis

[Steve Williams]

In the past we've had unexpected knock on effects from changes to we made to SANS scripts. Martyn said that we need system tests that cover:

batch mode, we have LOQ batch mode scrips some work required for SANS centre find 1D reduction 2D reduction

[Steve Williams]

Create tests with different mask files, including an empty mask file.

[Steve Williams]

(In [4887]) Insert a line that had gone absent without leave re #1251

[Steve Williams]

(In [4895]) Systems tests that test many of the options supported by the SANS analysis. Todo add tests that analyse front detector data re #1251

[Steve Williams]

(In [4908]) Fix system test failures (by specifying relative paths not those on my machine) re #1251

[Steve Williams]

(In [4913]) Fix a system test with a faulty path that I missed re #1251

[Steve Williams]

(In [5394]) SANS system test left some temporary files behind, add delete commands to remove them re #1251

[Steve Williams]

(In [5653]) Allow LoadNexusProcessed to load workspaces with no detector information and missing process algorithm history re #1251

[Martyn Gigg]

Tests currently pass on the test machine and on my local machine. Verified working in #5869

[Stuart Campbell]

This ticket has been transferred to github issue ​2098