tests-sample-svgbob: adding sample set

Signed-off-by: James Knight <[email protected]>

Author: jdknight

tests/sample-sets/svgbob/conf.py

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+extensions = [
+    'sphinxcontrib.confluencebuilder',
+    'sphinxcontrib.svgbob',
+]

tests/sample-sets/svgbob/index.rst

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+Svgbob
+======
+
+.. svgbob::
+    :font-family: Arial
+    :font-size: 12
+
+    +-------+       +--------+
+    | Hello |------>| World! |
+    +-------+       +--------+
+
+Hamming distance between two strings of equal length is the number of
+positions at which the corresponding symbols are different. For instance,
+Hamming distance for a 3-bit string can be computed visually using a
+3-bit binary cube:
+
+.. svgbob::
+    :align: center
+
+        110              111
+           *-----------*
+          /|          /|
+         / |     011 / |
+    010 *--+--------*  |
+        |  | 100    |  |
+        |  *--------+--* 101
+        | /         | /
+        |/          |/
+    000 *-----------*  001
+
+The minimum distance between any two vertices is the Hamming distance
+between the two bit vectors (e.g. 100→011 has distance 3).

tests/sample-sets/svgbob/tox.ini

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+[tox]
+package_root={toxinidir}{/}..{/}..{/}..
+
+[testenv]
+deps =
+    sphinxcontrib-svgbob
+commands =
+    {envpython} -m tests.test_sample {posargs}
+setenv =
+    PYTHONDONTWRITEBYTECODE=1
+    TOX_INI_DIR={toxinidir}
+passenv = *
+use_develop = true