Adds basic test suite.

Fixes #3, spent @1h

tests/test/dir/collatz.py

@@ -0,0 +1,16 @@
+
+def nextInSequence(number):
+    if isinstance(number, int):
+        if number % 2 == 0:
+            return number // 2
+        else:
+            return 3*number+1
+    else:
+        raise TypeError('input must be int!')
+
+def seqenceLength(number):
+    length = 0
+    while number != 1:
+        number = nextInSequence(number)
+        length += 1
+    return length

tests/test/dir/subdir/linked.adoc

@@ -0,0 +1,17 @@
+= relatively linked doc
+Gabe Venberg
+:imagesdir: ../../images/
+:reproducible:
+:giturl: git.venberg.xyz/Gabe/adocStaticSiteGen
+
+[#test-pattern]
+.Technical Difficulties
+[link={giturl}]
+image::test_patern.jpg[Stand By]
+
+https://git.venberg.xyz/Gabe/adocStaticSiteGen
+
+.A mechanical marvel
+video::IvUU8joBb1Q[youtube]
+
+<<../../landing_page.adoc#_link_tests,back to where you came!>>