boolean.gno

 1package expect
 2
 3import (
 4	"strconv"
 5
 6	"gno.land/p/nt/ufmt/v0"
 7)
 8
 9// NewBooleanChecker creates a new checker of boolean values
10func NewBooleanChecker(ctx Context, value bool) BooleanChecker {
11	return BooleanChecker{ctx, value}
12}
13
14// BooleanChecker asserts boolean values.
15type BooleanChecker struct {
16	ctx   Context
17	value bool
18}
19
20// Not negates the next called expectation.
21func (c BooleanChecker) Not() BooleanChecker {
22	c.ctx.negated = !c.ctx.negated
23	return c
24}
25
26// ToEqual asserts that current value is equal to an expected value.
27func (c BooleanChecker) ToEqual(v bool) {
28	c.ctx.T().Helper()
29	c.ctx.CheckExpectation(c.value == v, func(ctx Context) string {
30		got := formatBoolean(c.value)
31		if !ctx.IsNegated() {
32			want := formatBoolean(v)
33			return ufmt.Sprintf("Expected values to match\nGot: %s\nWant: %s", got, want)
34		}
35		return ufmt.Sprintf("Expected values to be different\nGot: %s", got)
36	})
37}
38
39// ToBeFalsy asserts that current value is falsy.
40func (c BooleanChecker) ToBeFalsy() {
41	c.ctx.T().Helper()
42	c.ctx.CheckExpectation(!c.value, func(ctx Context) string {
43		if !ctx.IsNegated() {
44			return "Expected value to be falsy"
45		}
46		return "Expected value not to be falsy"
47	})
48}
49
50// ToBeTruthy asserts that current value is truthy.
51func (c BooleanChecker) ToBeTruthy() {
52	c.ctx.T().Helper()
53	c.ctx.CheckExpectation(c.value, func(ctx Context) string {
54		if !ctx.IsNegated() {
55			return "Expected value to be truthy"
56		}
57		return "Expected value not to be truthy"
58	})
59}
60
61func asBoolean(value any) (bool, error) {
62	if value == nil {
63		return false, nil
64	}
65
66	var s string
67	switch v := value.(type) {
68	case bool:
69		return v, nil
70	case string:
71		s = v
72	case []byte:
73		s = string(v)
74	case Stringer:
75		s = v.String()
76	default:
77		return false, ErrIncompatibleType
78	}
79
80	if s != "" {
81		return strconv.ParseBool(s)
82	}
83	return false, nil
84}
85
86func formatBoolean(value bool) string {
87	return strconv.FormatBool(value)
88}