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Reverts r1476 that is no longer needed after r3582....
Reverts r1476 that is no longer needed after r3582. git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3583 e93f8b46-1217-0410-a6f0-8f06a7374b81
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test_tree.rb
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Eric Davis
Converted Menus to a Tree structure to allow submenus....
 r2976 #!/usr/bin/env ruby
# testtree.rb
#
# $Revision: 1.6 $ by $Author: anupamsg $
# $Name: $
#
# Copyright (c) 2006, 2007 Anupam Sengupta
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# - Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
#
# - Redistributions in binary form must reproduce the above copyright notice, this
# list of conditions and the following disclaimer in the documentation and/or
# other materials provided with the distribution.
#
# - Neither the name of the organization nor the names of its contributors may
# be used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
require 'test/unit'
require 'tree'
module TestTree
# Test class for the Tree node.
class TestTreeNode < Test::Unit::TestCase
Person = Struct::new(:First, :last)
def setup
@root = Tree::TreeNode.new("ROOT", "Root Node")
@child1 = Tree::TreeNode.new("Child1", "Child Node 1")
@child2 = Tree::TreeNode.new("Child2", "Child Node 2")
@child3 = Tree::TreeNode.new("Child3", "Child Node 3")
@child4 = Tree::TreeNode.new("Child31", "Grand Child 1")
end
# Create this structure for the tests
#
# +----------+
# | ROOT |
# +-+--------+
# |
# | +---------------+
# +----+ CHILD1 |
# | +---------------+
# |
# | +---------------+
# +----+ CHILD2 |
# | +---------------+
# |
# | +---------------+ +------------------+
# +----+ CHILD3 +---+ CHILD4 |
# +---------------+ +------------------+
#
def loadChildren
@root << @child1
@root << @child2
@root << @child3 << @child4
end
def teardown
@root = nil
end
def test_root_setup
assert_not_nil(@root, "Root cannot be nil")
assert_nil(@root.parent, "Parent of root node should be nil")
assert_not_nil(@root.name, "Name should not be nil")
assert_equal("ROOT", @root.name, "Name should be 'ROOT'")
assert_equal("Root Node", @root.content, "Content should be 'Root Node'")
assert(@root.isRoot?, "Should identify as root")
assert(!@root.hasChildren?, "Cannot have any children")
assert(@root.hasContent?, "This root should have content")
assert_equal(1, @root.size, "Number of nodes should be one")
assert_nil(@root.siblings, "Root cannot have any children")
assert_raise(RuntimeError) { Tree::TreeNode.new(nil) }
end
def test_root
loadChildren
assert_same(@root, @root.root, "Root's root is self")
assert_same(@root, @child1.root, "Root should be ROOT")
assert_same(@root, @child4.root, "Root should be ROOT")
end
def test_hasContent_eh
aNode = Tree::TreeNode.new("A Node")
assert_nil(aNode.content, "The node should not have content")
assert(!aNode.hasContent?, "The node should not have content")
aNode.content = "Something"
assert_not_nil(aNode.content, "The node should now have content")
assert(aNode.hasContent?, "The node should now have content")
end
def test_length
loadChildren
assert_equal(@root.size, @root.length, "Length and size methods should return the same result")
end
def test_spaceship # Test the <=> operator.
firstNode = Tree::TreeNode.new(1)
secondNode = Tree::TreeNode.new(2)
assert_equal(firstNode <=> nil, +1)
assert_equal(firstNode <=> secondNode, -1)
secondNode = Tree::TreeNode.new(1)
assert_equal(firstNode <=> secondNode, 0)
firstNode = Tree::TreeNode.new("ABC")
secondNode = Tree::TreeNode.new("XYZ")
assert_equal(firstNode <=> nil, +1)
assert_equal(firstNode <=> secondNode, -1)
secondNode = Tree::TreeNode.new("ABC")
assert_equal(firstNode <=> secondNode, 0)
end
def test_to_s
aNode = Tree::TreeNode.new("A Node", "Some Content")
expectedString = "Node Name: A Node Content: Some Content Parent: <None> Children: 0 Total Nodes: 1"
assert_equal(expectedString, aNode.to_s, "The string representation should be same")
end
def test_firstSibling
loadChildren
assert_same(@root, @root.firstSibling, "Root's first sibling is itself")
assert_same(@child1, @child1.firstSibling, "Child1's first sibling is itself")
assert_same(@child1, @child2.firstSibling, "Child2's first sibling should be child1")
assert_same(@child1, @child3.firstSibling, "Child3's first sibling should be child1")
assert_not_same(@child1, @child4.firstSibling, "Child4's first sibling is itself")
end
def test_isFirstSibling_eh
loadChildren
assert(@root.isFirstSibling?, "Root's first sibling is itself")
assert( @child1.isFirstSibling?, "Child1's first sibling is itself")
assert(!@child2.isFirstSibling?, "Child2 is not the first sibling")
assert(!@child3.isFirstSibling?, "Child3 is not the first sibling")
assert( @child4.isFirstSibling?, "Child4's first sibling is itself")
end
def test_isLastSibling_eh
loadChildren
assert(@root.isLastSibling?, "Root's last sibling is itself")
assert(!@child1.isLastSibling?, "Child1 is not the last sibling")
assert(!@child2.isLastSibling?, "Child2 is not the last sibling")
assert( @child3.isLastSibling?, "Child3's last sibling is itself")
assert( @child4.isLastSibling?, "Child4's last sibling is itself")
end
def test_lastSibling
loadChildren
assert_same(@root, @root.lastSibling, "Root's last sibling is itself")
assert_same(@child3, @child1.lastSibling, "Child1's last sibling should be child3")
assert_same(@child3, @child2.lastSibling, "Child2's last sibling should be child3")
assert_same(@child3, @child3.lastSibling, "Child3's last sibling should be itself")
assert_not_same(@child3, @child4.lastSibling, "Child4's last sibling is itself")
end
def test_siblings
loadChildren
siblings = []
@child1.siblings { |sibling| siblings << sibling}
assert_equal(2, siblings.length, "Should have two siblings")
assert(siblings.include?(@child2), "Should have 2nd child as sibling")
assert(siblings.include?(@child3), "Should have 3rd child as sibling")
siblings.clear
siblings = @child1.siblings
assert_equal(2, siblings.length, "Should have two siblings")
siblings.clear
@child4.siblings {|sibling| siblings << sibling}
assert(siblings.empty?, "Should not have any children")
end
def test_isOnlyChild_eh
loadChildren
assert(!@child1.isOnlyChild?, "Child1 is not the only child")
assert(!@child2.isOnlyChild?, "Child2 is not the only child")
assert(!@child3.isOnlyChild?, "Child3 is not the only child")
assert( @child4.isOnlyChild?, "Child4 is not the only child")
end
def test_nextSibling
loadChildren
assert_equal(@child2, @child1.nextSibling, "Child1's next sibling is Child2")
assert_equal(@child3, @child2.nextSibling, "Child2's next sibling is Child3")
assert_nil(@child3.nextSibling, "Child3 does not have a next sibling")
assert_nil(@child4.nextSibling, "Child4 does not have a next sibling")
end
def test_previousSibling
loadChildren
assert_nil(@child1.previousSibling, "Child1 does not have previous sibling")
assert_equal(@child1, @child2.previousSibling, "Child2's previous sibling is Child1")
assert_equal(@child2, @child3.previousSibling, "Child3's previous sibling is Child2")
assert_nil(@child4.previousSibling, "Child4 does not have a previous sibling")
end
def test_add
assert(!@root.hasChildren?, "Should not have any children")
@root.add(@child1)
@root << @child2
assert(@root.hasChildren?, "Should have children")
assert_equal(3, @root.size, "Should have three nodes")
@root << @child3 << @child4
assert_equal(5, @root.size, "Should have five nodes")
assert_equal(2, @child3.size, "Should have two nodes")
assert_raise(RuntimeError) { @root.add(Tree::TreeNode.new(@child1.name)) }
end
def test_remove_bang
@root << @child1
@root << @child2
assert(@root.hasChildren?, "Should have children")
assert_equal(3, @root.size, "Should have three nodes")
@root.remove!(@child1)
assert_equal(2, @root.size, "Should have two nodes")
@root.remove!(@child2)
assert(!@root.hasChildren?, "Should have no children")
assert_equal(1, @root.size, "Should have one node")
@root << @child1
@root << @child2
assert(@root.hasChildren?, "Should have children")
assert_equal(3, @root.size, "Should have three nodes")
@root.removeAll!
assert(!@root.hasChildren?, "Should have no children")
assert_equal(1, @root.size, "Should have one node")
end
def test_removeAll_bang
loadChildren
assert(@root.hasChildren?, "Should have children")
@root.removeAll!
assert(!@root.hasChildren?, "Should have no children")
assert_equal(1, @root.size, "Should have one node")
end
def test_removeFromParent_bang
loadChildren
assert(@root.hasChildren?, "Should have children")
assert(!@root.isLeaf?, "Root is not a leaf here")
child1 = @root[0]
assert_not_nil(child1, "Child 1 should exist")
assert_same(@root, child1.root, "Child 1's root should be ROOT")
assert(@root.include?(child1), "root should have child1")
child1.removeFromParent!
assert_same(child1, child1.root, "Child 1's root should be self")
assert(!@root.include?(child1), "root should not have child1")
child1.removeFromParent!
assert_same(child1, child1.root, "Child 1's root should still be self")
end
def test_children
loadChildren
assert(@root.hasChildren?, "Should have children")
assert_equal(5, @root.size, "Should have four nodes")
assert(@child3.hasChildren?, "Should have children")
assert(!@child3.isLeaf?, "Should not be a leaf")
children = []
for child in @root.children
children << child
end
assert_equal(3, children.length, "Should have three direct children")
assert(!children.include?(@root), "Should not have root")
assert(children.include?(@child1), "Should have child 1")
assert(children.include?(@child2), "Should have child 2")
assert(children.include?(@child3), "Should have child 3")
assert(!children.include?(@child4), "Should not have child 4")
children.clear
children = @root.children
assert_equal(3, children.length, "Should have three children")
end
def test_firstChild
loadChildren
assert_equal(@child1, @root.firstChild, "Root's first child is Child1")
assert_nil(@child1.firstChild, "Child1 does not have any children")
assert_equal(@child4, @child3.firstChild, "Child3's first child is Child4")
end
def test_lastChild
loadChildren
assert_equal(@child3, @root.lastChild, "Root's last child is Child3")
assert_nil(@child1.lastChild, "Child1 does not have any children")
assert_equal(@child4, @child3.lastChild, "Child3's last child is Child4")
end
def test_find
loadChildren
foundNode = @root.find { |node| node == @child2}
assert_same(@child2, foundNode, "The node should be Child 2")
foundNode = @root.find { |node| node == @child4}
assert_same(@child4, foundNode, "The node should be Child 4")
foundNode = @root.find { |node| node.name == "Child31" }
assert_same(@child4, foundNode, "The node should be Child 4")
foundNode = @root.find { |node| node.name == "NOT PRESENT" }
assert_nil(foundNode, "The node should not be found")
end
def test_parentage
loadChildren
assert_nil(@root.parentage, "Root does not have any parentage")
assert_equal([@root], @child1.parentage, "Child1 has Root as its parent")
assert_equal([@child3, @root], @child4.parentage, "Child4 has Child3 and Root as ancestors")
end
def test_each
loadChildren
assert(@root.hasChildren?, "Should have children")
assert_equal(5, @root.size, "Should have five nodes")
assert(@child3.hasChildren?, "Should have children")
nodes = []
@root.each { |node| nodes << node }
assert_equal(5, nodes.length, "Should have FIVE NODES")
assert(nodes.include?(@root), "Should have root")
assert(nodes.include?(@child1), "Should have child 1")
assert(nodes.include?(@child2), "Should have child 2")
assert(nodes.include?(@child3), "Should have child 3")
assert(nodes.include?(@child4), "Should have child 4")
end
def test_each_leaf
loadChildren
nodes = []
@root.each_leaf { |node| nodes << node }
assert_equal(3, nodes.length, "Should have THREE LEAF NODES")
assert(!nodes.include?(@root), "Should not have root")
assert(nodes.include?(@child1), "Should have child 1")
assert(nodes.include?(@child2), "Should have child 2")
assert(!nodes.include?(@child3), "Should not have child 3")
assert(nodes.include?(@child4), "Should have child 4")
end
def test_parent
loadChildren
assert_nil(@root.parent, "Root's parent should be nil")
assert_equal(@root, @child1.parent, "Parent should be root")
assert_equal(@root, @child3.parent, "Parent should be root")
assert_equal(@child3, @child4.parent, "Parent should be child3")
assert_equal(@root, @child4.parent.parent, "Parent should be root")
end
def test_indexed_access
loadChildren
assert_equal(@child1, @root[0], "Should be the first child")
assert_equal(@child4, @root[2][0], "Should be the grandchild")
assert_nil(@root["TEST"], "Should be nil")
assert_raise(RuntimeError) { @root[nil] }
end
def test_printTree
loadChildren
#puts
#@root.printTree
end
# Tests the binary dumping mechanism with an Object content node
def test_marshal_dump
# Setup Test Data
test_root = Tree::TreeNode.new("ROOT", "Root Node")
test_content = {"KEY1" => "Value1", "KEY2" => "Value2" }
test_child = Tree::TreeNode.new("Child", test_content)
test_content2 = ["AValue1", "AValue2", "AValue3"]
test_grand_child = Tree::TreeNode.new("Grand Child 1", test_content2)
test_root << test_child << test_grand_child
# Perform the test operation
data = Marshal.dump(test_root) # Marshal
new_root = Marshal.load(data) # And unmarshal
# Test the root node
assert_equal(test_root.name, new_root.name, "Must identify as ROOT")
assert_equal(test_root.content, new_root.content, "Must have root's content")
assert(new_root.isRoot?, "Must be the ROOT node")
assert(new_root.hasChildren?, "Must have a child node")
# Test the child node
new_child = new_root[test_child.name]
assert_equal(test_child.name, new_child.name, "Must have child 1")
assert(new_child.hasContent?, "Child must have content")
assert(new_child.isOnlyChild?, "Child must be the only child")
new_child_content = new_child.content
assert_equal(Hash, new_child_content.class, "Class of child's content should be a hash")
assert_equal(test_child.content.size, new_child_content.size, "The content should have same size")
# Test the grand-child node
new_grand_child = new_child[test_grand_child.name]
assert_equal(test_grand_child.name, new_grand_child.name, "Must have grand child")
assert(new_grand_child.hasContent?, "Grand-child must have content")
assert(new_grand_child.isOnlyChild?, "Grand-child must be the only child")
new_grand_child_content = new_grand_child.content
assert_equal(Array, new_grand_child_content.class, "Class of grand-child's content should be an Array")
assert_equal(test_grand_child.content.size, new_grand_child_content.size, "The content should have same size")
end
# marshal_load and marshal_dump are symmetric methods
# This alias is for satisfying ZenTest
alias test_marshal_load test_marshal_dump
# Test the collect method from the mixed-in Enumerable functionality.
def test_collect
loadChildren
collectArray = @root.collect do |node|
node.content = "abc"
node
end
collectArray.each {|node| assert_equal("abc", node.content, "Should be 'abc'")}
end
# Test freezing the tree
def test_freezeTree_bang
loadChildren
@root.content = "ABC"
assert_equal("ABC", @root.content, "Content should be 'ABC'")
@root.freezeTree!
assert_raise(TypeError) {@root.content = "123"}
assert_raise(TypeError) {@root[0].content = "123"}
end
# Test whether the content is accesible
def test_content
pers = Person::new("John", "Doe")
@root.content = pers
assert_same(pers, @root.content, "Content should be the same")
end
# Test the depth computation algorithm
def test_depth
assert_equal(1, @root.depth, "A single node's depth is 1")
@root << @child1
assert_equal(2, @root.depth, "This should be of depth 2")
@root << @child2
assert_equal(2, @root.depth, "This should be of depth 2")
@child2 << @child3
assert_equal(3, @root.depth, "This should be of depth 3")
assert_equal(2, @child2.depth, "This should be of depth 2")
@child3 << @child4
assert_equal(4, @root.depth, "This should be of depth 4")
end
# Test the breadth computation algorithm
def test_breadth
assert_equal(1, @root.breadth, "A single node's breadth is 1")
@root << @child1
assert_equal(1, @root.breadth, "This should be of breadth 1")
@root << @child2
assert_equal(2, @child1.breadth, "This should be of breadth 2")
assert_equal(2, @child2.breadth, "This should be of breadth 2")
@root << @child3
assert_equal(3, @child1.breadth, "This should be of breadth 3")
assert_equal(3, @child2.breadth, "This should be of breadth 3")
@child3 << @child4
assert_equal(1, @child4.breadth, "This should be of breadth 1")
end
# Test the breadth for each
def test_breadth_each
j = Tree::TreeNode.new("j")
f = Tree::TreeNode.new("f")
k = Tree::TreeNode.new("k")
a = Tree::TreeNode.new("a")
d = Tree::TreeNode.new("d")
h = Tree::TreeNode.new("h")
z = Tree::TreeNode.new("z")
# The expected order of response
expected_array = [j,
f, k,
a, h, z,
d]
# Create the following Tree
# j <-- level 0 (Root)
# / \
# f k <-- level 1
# / \ \
# a h z <-- level 2
# \
# d <-- level 3
j << f << a << d
f << h
j << k << z
# Create the response
result_array = Array.new
j.breadth_each { |node| result_array << node.detached_copy }
expected_array.each_index do |i|
assert_equal(expected_array[i].name, result_array[i].name) # Match only the names.
end
end
def test_preordered_each
j = Tree::TreeNode.new("j")
f = Tree::TreeNode.new("f")
k = Tree::TreeNode.new("k")
a = Tree::TreeNode.new("a")
d = Tree::TreeNode.new("d")
h = Tree::TreeNode.new("h")
z = Tree::TreeNode.new("z")
# The expected order of response
expected_array = [j, f, a, d, h, k, z]
# Create the following Tree
# j <-- level 0 (Root)
# / \
# f k <-- level 1
# / \ \
# a h z <-- level 2
# \
# d <-- level 3
j << f << a << d
f << h
j << k << z
result_array = []
j.preordered_each { |node| result_array << node.detached_copy}
expected_array.each_index do |i|
# Match only the names.
assert_equal(expected_array[i].name, result_array[i].name)
end
end
def test_detached_copy
loadChildren
assert(@root.hasChildren?, "The root should have children")
copy_of_root = @root.detached_copy
assert(!copy_of_root.hasChildren?, "The copy should not have children")
assert_equal(@root.name, copy_of_root.name, "The names should be equal")
# Try the same test with a child node
assert(!@child3.isRoot?, "Child 3 is not a root")
assert(@child3.hasChildren?, "Child 3 has children")
copy_of_child3 = @child3.detached_copy
assert(copy_of_child3.isRoot?, "Child 3's copy is a root")
assert(!copy_of_child3.hasChildren?, "Child 3's copy does not have children")
end
def test_hasChildren_eh
loadChildren
assert(@root.hasChildren?, "The Root node MUST have children")
end
def test_isLeaf_eh
loadChildren
assert(!@child3.isLeaf?, "Child 3 is not a leaf node")
assert(@child4.isLeaf?, "Child 4 is a leaf node")
end
def test_isRoot_eh
loadChildren
assert(@root.isRoot?, "The ROOT node must respond as the root node")
end
def test_content_equals
@root.content = nil
assert_nil(@root.content, "Root's content should be nil")
@root.content = "ABCD"
assert_equal("ABCD", @root.content, "Root's content should now be 'ABCD'")
end
def test_size
assert_equal(1, @root.size, "Root's size should be 1")
loadChildren
assert_equal(5, @root.size, "Root's size should be 5")
assert_equal(2, @child3.size, "Child 3's size should be 2")
end
def test_lt2 # Test the << method
@root << @child1
@root << @child2
@root << @child3 << @child4
assert_not_nil(@root['Child1'], "Child 1 should have been added to Root")
assert_not_nil(@root['Child2'], "Child 2 should have been added to Root")
assert_not_nil(@root['Child3'], "Child 3 should have been added to Root")
assert_not_nil(@child3['Child31'], "Child 31 should have been added to Child3")
end
def test_index # Test the [] method
assert_raise(RuntimeError) {@root[nil]}
@root << @child1
@root << @child2
assert_equal(@child1.name, @root['Child1'].name, "Child 1 should be returned")
assert_equal(@child1.name, @root[0].name, "Child 1 should be returned")
assert_equal(@child2.name, @root['Child2'].name, "Child 2 should be returned")
assert_equal(@child2.name, @root[1].name, "Child 2 should be returned")
assert_nil(@root['Some Random Name'], "Should return nil")
assert_nil(@root[99], "Should return nil")
end
end
end
__END__
# $Log: test_tree.rb,v $
# Revision 1.6 2007/12/22 00:28:59 anupamsg
# Added more test cases, and enabled ZenTest compatibility.
#
# Revision 1.5 2007/12/19 02:24:18 anupamsg
# Updated the marshalling logic to handle non-string contents on the nodes.
#
# Revision 1.4 2007/10/02 03:38:11 anupamsg
# Removed dependency on the redundant "Person" class.
# (TC_TreeTest::test_comparator): Added a new test for the spaceship operator.
# (TC_TreeTest::test_hasContent): Added tests for hasContent? and length methods.
#
# Revision 1.3 2007/10/02 03:07:30 anupamsg
# * Rakefile: Added an optional task for rcov code coverage.
#
# * test/test_binarytree.rb: Removed the unnecessary dependency on "Person" class.
#
# * test/test_tree.rb: Removed dependency on the redundant "Person" class.
#
# Revision 1.2 2007/08/31 01:16:28 anupamsg
# Added breadth and pre-order traversals for the tree. Also added a method
# to return the detached copy of a node from the tree.
#
# Revision 1.1 2007/07/21 04:52:38 anupamsg
# Renamed the test files.
#
# Revision 1.13 2007/07/18 22:11:50 anupamsg
# Added depth and breadth methods for the TreeNode.
#
# Revision 1.12 2007/07/18 07:17:34 anupamsg
# Fixed a issue where TreeNode.ancestors was shadowing Module.ancestors. This method
# has been renamed to TreeNode.parentage.
#
# Revision 1.11 2007/07/17 03:39:29 anupamsg
# Moved the CVS Log keyword to end of the files.
#