Added: type name output when exception raised from unittest

[7sDream]

code for test

import unittest

suite "throw exception":
  test "show exception type":
    raise newException(ValueError, "a value error")

before

[Suite] throw exception
test1.nim(5)             test1

    Unhandled exception: a value error
  [FAILED] show exception type

after

[Suite] throw exception
test1.nim(5)             test1

    Unhandled exception: a value error [ValueError]
  [FAILED] show exception type

---

Change the parameter name of template test to testDesc because we will e.name to get the type and testName is a property of TestResult type and used in this template too.

Test added, I create a new file instead of add it into tunittest.nim, because the exitcode need to be 1, don‘t want change exit code check for tests in tunittest.nim.

[cooldome]

typedesc is a valid standard type so it is rather confusing, can we make it test_name instead

[data-man]

Change the parameter name of template test to typeDesc

No, it's name of a test. Revert, please.

Otherwise, on this logic should be template suite*(suiteDesc, body) instead of template suite*(name, body) ?

The rest is fine, thanks!

[7sDream]

@cooldome

test_name is same as testName so conflict with TestResult.testName.

@data-man

use name as parameter name will make e.name be expanded to e."show exception type" so:

in expression 'e."show exception type"': identifier expected, but found '"show exception type""'

How can we make a template parameter name not expanded temporarily in this line?

[7sDream]

@cooldome @data-man

I added a help template to bypass the name conflicts, but it will lead to a useless template be exported, is this an acceptable way?

[7sDream]

Oh, I noticed the bind stmt and then read the doc, now exceptionTypeName don't need to be exported.

But I wonder why the doc says:

But a bind is rarely useful because symbol binding from the definition scope is the default.

[data-man]

LGTM.

@7sDream
Nice!
Please, add entry to the changelog (to the "Library changes" section).