yq/pkg/yqlib/operator_length_test.go

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package yqlib
import (
"testing"
)
var lengthOperatorScenarios = []expressionScenario{
{
description: "String length",
subdescription: "returns length of string",
document: `{a: cat}`,
expression: `.a | length`,
expected: []string{
"D0, P[a], (!!int)::3\n",
},
},
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{
description: "null length",
document: `{a: null}`,
expression: `.a | length`,
expected: []string{
"D0, P[a], (!!int)::0\n",
},
},
{
skipDoc: true,
document: `{a: ~}`,
expression: `.a | length`,
expected: []string{
"D0, P[a], (!!int)::0\n",
},
},
{
skipDoc: true,
document: `{a: key no exist}`,
expression: `.b | length`,
expected: []string{
"D0, P[b], (!!int)::0\n",
},
},
{
description: "Map length",
subdescription: "returns number of entries",
document: `{a: cat, c: dog}`,
expression: `length`,
expected: []string{
"D0, P[], (!!int)::2\n",
},
},
{
description: "Array length",
subdescription: "returns number of elements",
document: `[2,4,6,8]`,
expression: `length`,
expected: []string{
"D0, P[], (!!int)::4\n",
},
},
}
func TestLengthOperatorScenarios(t *testing.T) {
for _, tt := range lengthOperatorScenarios {
testScenario(t, &tt)
}
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documentScenarios(t, "length", lengthOperatorScenarios)
}