C-lisp-parser-and-interpreter-in-golang/sexpr_test.go at main · Mukta13/C-lisp-parser-and-interpreter-in-golang · GitHub

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
package sexpr

import (
	"math/big"
	"testing"
)

func TestSExprNil(t *testing.T) {
	se := mkNil()
	if !se.isNil() {
		t.Errorf("expected isNil() to return true")
	}
	if !se.isAtom() {
		t.Errorf("expected isAtom() to return true")
	}
	if !se.isConsCell() {
		t.Errorf("expected isConsCell() to return true")
	}
	if se.isNumber() {
		t.Errorf("expected isNumber() to return false")
	}
	if se.isSymbol() {
		t.Errorf("expected isSymbol() to return false")
	}
	if se.SExprString() != "NIL" {
		t.Errorf("incorrect SExprString()")
	}
}

func TestSExprAtom(t *testing.T) {
	se := mkAtom(mkTokenSymbol("A"))
	if se.isNil() {
		t.Errorf("expected isNil() to return false")
	}
	if !se.isAtom() {
		t.Errorf("expected isAtom() to return true")
	}
	if se.isConsCell() {
		t.Errorf("expected isConsCell() to return false")
	}
	if se.SExprString() != "A" {
		t.Errorf("incorrect SExprString()")
	}
}

func TestSExprNumber(t *testing.T) {
	se := mkNumber(big.NewInt(100))
	if se.isNil() {
		t.Errorf("expected isNil() to return false")
	}
	if !se.isAtom() {
		t.Errorf("expected isAtom() to return true")
	}
	if se.isConsCell() {
		t.Errorf("expected isConsCell() to return false")
	}
	if !se.isNumber() {
		t.Errorf("expected isNumber() to return true")
	}
	if se.isSymbol() {
		t.Errorf("expected isSymbol() to return false")
	}
	if se.SExprString() != "100" {
		t.Errorf("incorrect SExprString()")
	}
}

func TestSExprSymbol(t *testing.T) {
	se := mkSymbol("+")
	if se.isNil() {
		t.Errorf("expected isNil() to return false")
	}
	if !se.isAtom() {
		t.Errorf("expected isAtom() to return true")
	}
	if se.isConsCell() {
		t.Errorf("expected isConsCell() to return false")
	}
	if se.isNumber() {
		t.Errorf("expected isNumber() to return false")
	}
	if !se.isSymbol() {
		t.Errorf("expected isSymbol() to return true")
	}
	if se.SExprString() != "+" {
		t.Errorf("incorrect SExprString()")
	}
}

func TestSExprSymbolTrue(t *testing.T) {
	se := mkSymbolTrue()
	if se.isNil() {
		t.Errorf("expected isNil() to return false")
	}
	if !se.isAtom() {
		t.Errorf("expected isAtom() to return true")
	}
	if se.isConsCell() {
		t.Errorf("expected isConsCell() to return false")
	}
	if se.isNumber() {
		t.Errorf("expected isNumber() to return false")
	}
	if !se.isSymbol() {
		t.Errorf("expected isSymbol() to return true")
	}
	if se.SExprString() != "T" {
		t.Errorf("incorrect SExprString()")
	}
}

func TestSExprConsCell(t *testing.T) {
	se := mkConsCell(mkSymbol("A"), mkSymbol("B"))
	if se.isNil() {
		t.Errorf("expected isNil() to return false")
	}
	if se.isAtom() {
		t.Errorf("expected isAtom() to return false")
	}
	if !se.isConsCell() {
		t.Errorf("expected isConsCell() to return true")
	}
	if se.isNumber() {
		t.Errorf("expected isNumber() to return false")
	}
	if se.isSymbol() {
		t.Errorf("expected isSymbol() to return false")
	}
	if se.SExprString() != "(A . B)" {
		t.Errorf("incorrect SExprString()")
	}
}