+ Penlight

1 files changed, 98 insertions, 0 deletions

diff --git a/Data/Libraries/Penlight/tests/test-orderedmap.lua b/Data/Libraries/Penlight/tests/test-orderedmap.lua
new file mode 100644
index 0000000..1d0fc67
--- /dev/null
+++ b/Data/Libraries/Penlight/tests/test-orderedmap.lua
@@ -0,0 +1,98 @@
+local List = require 'pl.List'
+
+local asserteq = require 'pl.test' . asserteq
+local asserteq2 = require 'pl.test' . asserteq2
+local OrderedMap = require 'pl.OrderedMap'
+
+
+m = OrderedMap()
+m:set('one',1)
+m:set('two',2)
+m:set('three',3)
+
+asserteq(m:values(),List{1,2,3})
+
+-- usually exercized like this:
+--for k,v in m:iter() do print(k,v) end
+
+local fn = m:iter()
+asserteq2 ('one',1,fn())
+asserteq2 ('two',2,fn())
+asserteq2 ('three',3,fn())
+
+-- Keys overriding methods can be used.
+m:set('set', 4)
+asserteq(m:values(),List{1,2,3,4})
+
+local o1 = OrderedMap  {{z=2},{beta=1},{name='fred'}}
+asserteq(tostring(o1),'{z=2,beta=1,name="fred"}')
+
+-- order of keys is not preserved here!
+local o2 = OrderedMap   {z=4,beta=1.1,name='alice',extra='dolly'}
+
+o1:update(o2)
+asserteq(tostring(o1),'{z=4,beta=1.1,name="alice",extra="dolly"}')
+
+o1:set('beta',nil)
+asserteq(o1,OrderedMap{{z=4},{name='alice'},{extra='dolly'}})
+
+local o3 = OrderedMap()
+o3:set('dog',10)
+o3:set('cat',20)
+o3:set('mouse',30)
+
+asserteq(o3:keys(),{'dog','cat','mouse'})
+
+o3:set('dog',nil)
+
+asserteq(o3:keys(),{'cat','mouse'})
+
+-- Vadim found a problem when clearing a key which did not exist already.
+-- The keys list would then contain the key, although the map would not
+o3:set('lizard',nil)
+
+asserteq(o3:keys(),{'cat','mouse'})
+asserteq(o3:values(), {20,30})
+asserteq(tostring(o3),'{cat=20,mouse=30}')
+
+-- copy constructor
+local o4 = OrderedMap(o3)
+
+asserteq(o4,o3)
+
+-- constructor throws an error if the argument is bad
+-- (errors same as OrderedMap:update)
+asserteq(false,pcall(function()
+    m = OrderedMap('string')
+end))
+
+---- changing order of key/value pairs ----
+
+o3 = OrderedMap{{cat=20},{mouse=30}}
+
+o3:insert(1,'bird',5) -- adds key/value before specified position
+o3:insert(1,'mouse') -- moves key keeping old value
+asserteq(o3:keys(),{'mouse','bird','cat'})
+asserteq(tostring(o3),'{mouse=30,bird=5,cat=20}')
+o3:insert(2,'cat',21) -- moves key and sets new value
+asserteq(tostring(o3),'{mouse=30,cat=21,bird=5}')
+-- if you don't specify a value for an unknown key, nothing happens to the map
+o3:insert(3,'alligator')
+asserteq(tostring(o3),'{mouse=30,cat=21,bird=5}')
+
+---- short-cut notation
+
+local o5 = OrderedMap()
+o5.alpha = 1
+o5.beta = 2
+o5.gamma = 3
+
+asserteq(o5,OrderedMap{{alpha=1},{beta=2},{gamma=3}})
+
+o5.alpha = 10
+o5.beta = 20
+o5.gamma = 30
+o5.delta = 40
+o5.checked = false
+
+asserteq(o5,OrderedMap{{alpha=10},{beta=20},{gamma=30},{delta=40},{checked=false}})