1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System;
using System.Collections.Generic;
using Xunit;
namespace Microsoft.AspNetCore.Routing.DecisionTree
{
public class DecisionTreeBuilderTest
{
[Fact]
public void BuildTree_Empty()
{
// Arrange
var items = new List<Item>();
// Act
var tree = DecisionTreeBuilder<Item>.GenerateTree(items, new ItemClassifier());
// Assert
Assert.Empty(tree.Criteria);
Assert.Empty(tree.Matches);
}
[Fact]
public void BuildTree_TrivialMatch()
{
// Arrange
var items = new List<Item>();
var item = new Item();
items.Add(item);
// Act
var tree = DecisionTreeBuilder<Item>.GenerateTree(items, new ItemClassifier());
// Assert
Assert.Empty(tree.Criteria);
Assert.Same(item, Assert.Single(tree.Matches));
}
[Fact]
public void BuildTree_WithMultipleCriteria()
{
// Arrange
var items = new List<Item>();
var item = new Item();
item.Criteria.Add("area", new DecisionCriterionValue(value: "Admin"));
item.Criteria.Add("controller", new DecisionCriterionValue(value: "Users"));
item.Criteria.Add("action", new DecisionCriterionValue(value: "AddUser"));
items.Add(item);
// Act
var tree = DecisionTreeBuilder<Item>.GenerateTree(items, new ItemClassifier());
// Assert
Assert.Empty(tree.Matches);
var area = Assert.Single(tree.Criteria);
Assert.Equal("area", area.Key);
var admin = Assert.Single(area.Branches);
Assert.Equal("Admin", admin.Key);
Assert.Empty(admin.Value.Matches);
var controller = Assert.Single(admin.Value.Criteria);
Assert.Equal("controller", controller.Key);
var users = Assert.Single(controller.Branches);
Assert.Equal("Users", users.Key);
Assert.Empty(users.Value.Matches);
var action = Assert.Single(users.Value.Criteria);
Assert.Equal("action", action.Key);
var addUser = Assert.Single(action.Branches);
Assert.Equal("AddUser", addUser.Key);
Assert.Empty(addUser.Value.Criteria);
Assert.Same(item, Assert.Single(addUser.Value.Matches));
}
[Fact]
public void BuildTree_WithMultipleItems()
{
// Arrange
var items = new List<Item>();
var item1 = new Item();
item1.Criteria.Add("controller", new DecisionCriterionValue(value: "Store"));
item1.Criteria.Add("action", new DecisionCriterionValue(value: "Buy"));
items.Add(item1);
var item2 = new Item();
item2.Criteria.Add("controller", new DecisionCriterionValue(value: "Store"));
item2.Criteria.Add("action", new DecisionCriterionValue(value: "Checkout"));
items.Add(item2);
// Act
var tree = DecisionTreeBuilder<Item>.GenerateTree(items, new ItemClassifier());
// Assert
Assert.Empty(tree.Matches);
var action = Assert.Single(tree.Criteria);
Assert.Equal("action", action.Key);
var buy = action.Branches["Buy"];
Assert.Empty(buy.Matches);
var controller = Assert.Single(buy.Criteria);
Assert.Equal("controller", controller.Key);
var store = Assert.Single(controller.Branches);
Assert.Equal("Store", store.Key);
Assert.Empty(store.Value.Criteria);
Assert.Same(item1, Assert.Single(store.Value.Matches));
var checkout = action.Branches["Checkout"];
Assert.Empty(checkout.Matches);
controller = Assert.Single(checkout.Criteria);
Assert.Equal("controller", controller.Key);
store = Assert.Single(controller.Branches);
Assert.Equal("Store", store.Key);
Assert.Empty(store.Value.Criteria);
Assert.Same(item2, Assert.Single(store.Value.Matches));
}
[Fact]
public void BuildTree_WithInteriorMatch()
{
// Arrange
var items = new List<Item>();
var item1 = new Item();
item1.Criteria.Add("controller", new DecisionCriterionValue(value: "Store"));
item1.Criteria.Add("action", new DecisionCriterionValue(value: "Buy"));
items.Add(item1);
var item2 = new Item();
item2.Criteria.Add("controller", new DecisionCriterionValue(value: "Store"));
item2.Criteria.Add("action", new DecisionCriterionValue(value: "Checkout"));
items.Add(item2);
var item3 = new Item();
item3.Criteria.Add("action", new DecisionCriterionValue(value: "Buy"));
items.Add(item3);
// Act
var tree = DecisionTreeBuilder<Item>.GenerateTree(items, new ItemClassifier());
// Assert
Assert.Empty(tree.Matches);
var action = Assert.Single(tree.Criteria);
Assert.Equal("action", action.Key);
var buy = action.Branches["Buy"];
Assert.Same(item3, Assert.Single(buy.Matches));
}
[Fact]
public void BuildTree_WithDivergentCriteria()
{
// Arrange
var items = new List<Item>();
var item1 = new Item();
item1.Criteria.Add("controller", new DecisionCriterionValue(value: "Store"));
item1.Criteria.Add("action", new DecisionCriterionValue(value: "Buy"));
items.Add(item1);
var item2 = new Item();
item2.Criteria.Add("controller", new DecisionCriterionValue(value: "Store"));
item2.Criteria.Add("action", new DecisionCriterionValue(value: "Checkout"));
items.Add(item2);
var item3 = new Item();
item3.Criteria.Add("stub", new DecisionCriterionValue(value: "Bleh"));
items.Add(item3);
// Act
var tree = DecisionTreeBuilder<Item>.GenerateTree(items, new ItemClassifier());
// Assert
Assert.Empty(tree.Matches);
var action = tree.Criteria[0];
Assert.Equal("action", action.Key);
var stub = tree.Criteria[1];
Assert.Equal("stub", stub.Key);
}
private class Item
{
public Item()
{
Criteria = new Dictionary<string, DecisionCriterionValue>(StringComparer.OrdinalIgnoreCase);
}
public Dictionary<string, DecisionCriterionValue> Criteria { get; private set; }
}
private class ItemClassifier : IClassifier<Item>
{
public IEqualityComparer<object> ValueComparer => RouteValueEqualityComparer.Default;
public IDictionary<string, DecisionCriterionValue> GetCriteria(Item item)
{
return item.Criteria;
}
}
}
}
|