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
|
require_relative '../../spec_helper'
describe "Kernel.Complex()" do
describe "when passed [Complex, Complex]" do
it "returns a new Complex number based on the two given numbers" do
Complex(Complex(3, 4), Complex(5, 6)).should == Complex(3 - 6, 4 + 5)
Complex(Complex(1.5, 2), Complex(-5, 6.3)).should == Complex(1.5 - 6.3, 2 - 5)
end
end
describe "when passed [Complex]" do
it "returns the passed Complex number" do
Complex(Complex(1, 2)).should == Complex(1, 2)
Complex(Complex(-3.4, bignum_value)).should == Complex(-3.4, bignum_value)
end
end
describe "when passed [Integer, Integer]" do
it "returns a new Complex number" do
Complex(1, 2).should be_an_instance_of(Complex)
Complex(1, 2).real.should == 1
Complex(1, 2).imag.should == 2
Complex(-3, -5).should be_an_instance_of(Complex)
Complex(-3, -5).real.should == -3
Complex(-3, -5).imag.should == -5
Complex(3.5, -4.5).should be_an_instance_of(Complex)
Complex(3.5, -4.5).real.should == 3.5
Complex(3.5, -4.5).imag.should == -4.5
Complex(bignum_value, 30).should be_an_instance_of(Complex)
Complex(bignum_value, 30).real.should == bignum_value
Complex(bignum_value, 30).imag.should == 30
end
end
describe "when passed [Integer/Float]" do
it "returns a new Complex number with 0 as the imaginary component" do
# Guard against the Mathn library
guard -> { !defined?(Math.rsqrt) } do
Complex(1).should be_an_instance_of(Complex)
Complex(1).imag.should == 0
Complex(1).real.should == 1
Complex(-3).should be_an_instance_of(Complex)
Complex(-3).imag.should == 0
Complex(-3).real.should == -3
Complex(-4.5).should be_an_instance_of(Complex)
Complex(-4.5).imag.should == 0
Complex(-4.5).real.should == -4.5
Complex(bignum_value).should be_an_instance_of(Complex)
Complex(bignum_value).imag.should == 0
Complex(bignum_value).real.should == bignum_value
end
end
end
describe "when passed a String" do
it "needs to be reviewed for spec completeness"
end
describe "when passed an Object which responds to #to_c" do
it "returns the passed argument" do
obj = Object.new; def obj.to_c; 1i end
Complex(obj).should == Complex(0, 1)
end
end
describe "when passed a Numeric which responds to #real? with false" do
it "returns the passed argument" do
n = mock_numeric("unreal")
n.should_receive(:real?).any_number_of_times.and_return(false)
Complex(n).should equal(n)
end
end
describe "when passed a Numeric which responds to #real? with true" do
it "returns a Complex with the passed argument as the real component and 0 as the imaginary component" do
n = mock_numeric("real")
n.should_receive(:real?).any_number_of_times.and_return(true)
result = Complex(n)
result.real.should equal(n)
result.imag.should equal(0)
end
end
describe "when passed Numerics n1 and n2 and at least one responds to #real? with false" do
[[false, false], [false, true], [true, false]].each do |r1, r2|
it "returns n1 + n2 * Complex(0, 1)" do
n1 = mock_numeric("n1")
n2 = mock_numeric("n2")
n3 = mock_numeric("n3")
n4 = mock_numeric("n4")
n1.should_receive(:real?).any_number_of_times.and_return(r1)
n2.should_receive(:real?).any_number_of_times.and_return(r2)
n2.should_receive(:*).with(Complex(0, 1)).and_return(n3)
n1.should_receive(:+).with(n3).and_return(n4)
Complex(n1, n2).should equal(n4)
end
end
end
describe "when passed two Numerics and both respond to #real? with true" do
it "returns a Complex with the passed arguments as real and imaginary components respectively" do
n1 = mock_numeric("n1")
n2 = mock_numeric("n2")
n1.should_receive(:real?).any_number_of_times.and_return(true)
n2.should_receive(:real?).any_number_of_times.and_return(true)
result = Complex(n1, n2)
result.real.should equal(n1)
result.imag.should equal(n2)
end
end
describe "when passed a single non-Numeric" do
it "coerces the passed argument using #to_c" do
n = mock("n")
c = Complex(0, 0)
n.should_receive(:to_c).and_return(c)
Complex(n).should equal(c)
end
end
describe "when passed a non-Numeric second argument" do
it "raises TypeError" do
-> { Complex(:sym, :sym) }.should raise_error(TypeError)
-> { Complex(0, :sym) }.should raise_error(TypeError)
end
end
describe "when passed nil" do
it "raises TypeError" do
-> { Complex(nil) }.should raise_error(TypeError, "can't convert nil into Complex")
-> { Complex(0, nil) }.should raise_error(TypeError, "can't convert nil into Complex")
-> { Complex(nil, 0) }.should raise_error(TypeError, "can't convert nil into Complex")
end
end
ruby_version_is "2.6" do
describe "when passed exception: false" do
describe "and [Numeric]" do
it "returns a complex number" do
Complex("123", exception: false).should == Complex(123)
end
end
describe "and [non-Numeric]" do
it "swallows an error" do
Complex(:sym, exception: false).should == nil
end
end
describe "and [non-Numeric, Numeric] argument" do
it "throws a TypeError" do
-> { Complex(:sym, 0, exception: false) }.should raise_error(TypeError, "not a real")
end
end
describe "and [anything, non-Numeric] argument" do
it "swallows an error" do
Complex("a", :sym, exception: false).should == nil
Complex(:sym, :sym, exception: false).should == nil
Complex(0, :sym, exception: false).should == nil
end
end
describe "and non-numeric String arguments" do
it "swallows an error" do
Complex("a", "b", exception: false).should == nil
Complex("a", 0, exception: false).should == nil
Complex(0, "b", exception: false).should == nil
end
end
describe "and nil arguments" do
it "swallows an error" do
Complex(nil, exception: false).should == nil
Complex(0, nil, exception: false).should == nil
Complex(nil, 0, exception: false).should == nil
end
end
end
end
end
|
