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
|
// Tests for the New...Execute API.
package interp_test
import (
"bytes"
"context"
"errors"
"math"
"strings"
"testing"
"time"
"github.com/benhoyt/goawk/interp"
"github.com/benhoyt/goawk/parser"
)
// This definitely doesn't test that everything was reset, but it's a good start.
func TestNewExecute(t *testing.T) {
source := `{ print NR, OFMT, x, y, a["k"], $1, $3; OFMT="%g"; x++; y++; a["k"]++ }`
interpreter := newInterp(t, source)
// First execution.
var output bytes.Buffer
status, err := interpreter.Execute(&interp.Config{
Stdin: strings.NewReader("one two three\nfour five six\n"),
Output: &output,
})
if err != nil {
t.Fatalf("error executing: %v", err)
}
if status != 0 {
t.Fatalf("expected status 0, got %d", status)
}
normalized := normalizeNewlines(output.String())
expected := "1 %.6g one three\n2 %g 1 1 1 four six\n"
if normalized != expected {
t.Fatalf("expected %q, got %q", expected, normalized)
}
// Second execution, with ResetVars.
output.Reset()
interpreter.ResetVars()
status, err = interpreter.Execute(&interp.Config{
Stdin: strings.NewReader("ONE TWO THREE\nFOUR FIVE SIX\n"),
Output: &output,
Vars: []string{"x", "10"},
})
if err != nil {
t.Fatalf("error executing: %v", err)
}
if status != 0 {
t.Fatalf("expected status 0, got %d", status)
}
normalized = normalizeNewlines(output.String())
expected = "1 %.6g 10 ONE THREE\n2 %g 11 1 1 FOUR SIX\n"
if normalized != expected {
t.Fatalf("expected %q, got %q", expected, normalized)
}
// Third execution, without ResetVars.
output.Reset()
status, err = interpreter.Execute(&interp.Config{
Stdin: strings.NewReader("1 2 3\n4 5 6\n"),
Output: &output,
Vars: []string{"x", "100"},
})
if err != nil {
t.Fatalf("error executing: %v", err)
}
if status != 0 {
t.Fatalf("expected status 0, got %d", status)
}
normalized = normalizeNewlines(output.String())
expected = "1 %g 100 2 2 1 3\n2 %g 101 3 3 4 6\n"
if normalized != expected {
t.Fatalf("expected %q, got %q", expected, normalized)
}
}
func TestResetRand(t *testing.T) {
source := `BEGIN { print rand(), rand(), rand() }`
interpreter := newInterp(t, source)
var output bytes.Buffer
_, err := interpreter.Execute(&interp.Config{Output: &output})
if err != nil {
t.Fatalf("error executing: %v", err)
}
original := output.String()
output.Reset()
_, err = interpreter.Execute(&interp.Config{Output: &output})
if err != nil {
t.Fatalf("error executing: %v", err)
}
noResetRand := output.String()
if original == noResetRand {
t.Fatalf("expected different random numbers, got %q both times", original)
}
output.Reset()
interpreter.ResetRand()
_, err = interpreter.Execute(&interp.Config{Output: &output})
if err != nil {
t.Fatalf("error executing: %v", err)
}
withResetRand := output.String()
if original != withResetRand {
t.Fatalf("expected same random numbers (%q) as original (%q)", withResetRand, original)
}
}
func TestGetArrayValue(t *testing.T) {
interpreter := newInterp(t, `
BEGIN { Arr["key"]; f(); g(Arr) }
function f() { Arr["hello"]="world" }
function g(arr) { arr["a"]=1.23 }`)
_, err := interpreter.Execute(nil)
if err != nil {
t.Fatalf("error executing: %v", err)
}
arr := interpreter.Array("Arr")
if len(arr) != 3 {
t.Errorf("expected length 3, got %d", len(arr))
}
if arr["key"] != "" {
t.Errorf("expected value \"\", got %q", arr["key"])
}
if arr["hello"] != "world" {
t.Errorf("expected value \"world\", got %q", arr["hello"])
}
if math.Abs(arr["a"].(float64)-1.23) > 1e-9 {
t.Errorf("expected value 1.23, got %f", arr["a"])
}
if interpreter.Array("NonExistent") != nil {
t.Errorf("non existent name must resolve to nil")
}
}
func TestExecuteContextNoError(t *testing.T) {
interpreter := newInterp(t, `BEGIN {}`)
_, err := interpreter.ExecuteContext(context.Background(), nil)
if err != nil {
t.Fatalf("execute error: %v", err)
}
}
func TestExecuteContextTimeout(t *testing.T) {
interpreter := newInterp(t, `BEGIN { for (i=0; i<100000000; i++) s+=i }`) // would take about 4s
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Millisecond)
defer cancel()
_, err := interpreter.ExecuteContext(ctx, nil)
if !errors.Is(err, context.DeadlineExceeded) {
t.Fatalf("expected DeadlineExceeded error, got: %v", err)
}
}
func TestExecuteContextCancel(t *testing.T) {
interpreter := newInterp(t, `BEGIN { for (i=0; i<100000000; i++) s+=i }`) // would take about 4s
ctx, cancel := context.WithCancel(context.Background())
cancel() // cancel it right away
_, err := interpreter.ExecuteContext(ctx, nil)
if !errors.Is(err, context.Canceled) {
t.Fatalf("expected Canceled error, got: %v", err)
}
}
func TestExecuteContextSystemTimeout(t *testing.T) {
t.Skip("TODO: skipping for now due to #122")
interpreter := newInterp(t, `BEGIN { print system("sleep 4") }`)
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Millisecond)
defer cancel()
_, err := interpreter.ExecuteContext(ctx, nil)
if !errors.Is(err, context.DeadlineExceeded) {
t.Fatalf("expected DeadlineExceeded error, got: %v", err)
}
}
func newInterp(t *testing.T, src string) *interp.Interpreter {
t.Helper()
prog, err := parser.ParseProgram([]byte(src), nil)
if err != nil {
t.Fatalf("parse error: %v", err)
}
interpreter, err := interp.New(prog)
if err != nil {
t.Fatalf("interp.New error: %v", err)
}
return interpreter
}
|
