Added tests for untested symmetric/Hermitian operations

[kshyatt]

Again going by my Coveralls, several methods in base/linalg/symmetric.jl were untested. I added tests for:

• issym
• ishermitian
• full
• transpose, ctranspose
• matrix * vector multiplication
• matrix * matrix when both are Symmetric or Hermitian
• A \ x when A is Symmetric or Hermitian
• Inversion

Again, if any tests are duplicates, I'm happy to remove them.

[tkelman]

This is great, keep up the good work!

Can any of the second block be tested when eltya == BigFloat ?

[kshyatt]

Is my <: Real not catching BigFloat? It should work with that type. Give me a moment to check that it does.

[tkelman]

There's a pre-existing line eltya == BigFloat && continue # Revisit when implemented in julia between the first block you're adding and the second block

[kshyatt]

Apparently not. eigfact doesn't like BigFloat.

[tkelman]

Right, not yet, but full, transpose, and hopefully some or all of the multiplication tests you're adding could be moved to before the eltya == BigFloat && continue so they get run for BigFloat?

[kshyatt]

Ok, I checked and everything below mat * vec doesn't work with BigFloat. I'll update the PR.

[tkelman]

Cool, thanks for checking. May be some FIXMEs here.

[tkelman]

picky whitespace complaint here

[kshyatt]

Ok hopefully that clears it

[ViralBShah]

@kshyatt It may help to have an account on julia.mit.edu for parallel testing - 80 cores. If it would help, email me and I will set it up.