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package util
import (
"fmt"
"testing"
"github.com/stretchr/testify/assert"
)
func TestParseConcurrency(t *testing.T) {
cases := []struct {
Input string
Expected int
}{
{
"12",
12,
},
{
"200%",
20,
},
{
"100%",
10,
},
{
"50%",
5,
},
{
"25%",
2,
},
{
"1%",
1,
},
{
"0644", // we parse in base 10
644,
},
}
// mock runtime.NumCPU() to 10
runtimeNumCPU = func() int {
return 10
}
for i, tc := range cases {
t.Run(fmt.Sprintf("%d) '%s' should be parsed at '%d'", i, tc.Input, tc.Expected), func(t *testing.T) {
if result, err := ParseConcurrency(tc.Input); err != nil {
t.Fatalf("invalid parse: %#v", err)
} else {
assert.EqualValues(t, tc.Expected, result)
}
})
}
}
func TestInvalidPercents(t *testing.T) {
inputs := []string{
"asdf",
"-1",
"-l%",
"infinity%",
"-infinity%",
"nan%",
"0b01",
"0o644",
"0xFF",
}
for _, tc := range inputs {
t.Run(tc, func(t *testing.T) {
val, err := ParseConcurrency(tc)
assert.Error(t, err, "input %v got %v", tc, val)
})
}
}
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