yq/pkg/yqlib/operator_traverse_path_test.go

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package yqlib
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import (
"testing"
)
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var mergeDocSample = `
foo: &foo
a: foo_a
thing: foo_thing
c: foo_c
bar: &bar
b: bar_b
thing: bar_thing
c: bar_c
foobarList:
b: foobarList_b
<<: [*foo,*bar]
c: foobarList_c
foobar:
c: foobar_c
<<: *foo
thing: foobar_thing
`
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var traversePathOperatorScenarios = []expressionScenario{
{
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description: "Simple map navigation",
document: `{a: {b: apple}}`,
expression: `.a`,
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expected: []string{
"D0, P[a], (!!map)::{b: apple}\n",
},
},
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{
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description: "Splat",
subdescription: "Often used to pipe children into other operators",
document: `[{b: apple}, {c: banana}]`,
expression: `.[]`,
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expected: []string{
"D0, P[0], (!!map)::{b: apple}\n",
"D0, P[1], (!!map)::{c: banana}\n",
},
},
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{
description: "Special characters",
subdescription: "Use quotes around path elements with special characters",
document: `{"{}": frog}`,
expression: `."{}"`,
expected: []string{
"D0, P[{}], (!!str)::frog\n",
},
},
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{
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description: "Children don't exist",
subdescription: "Nodes are added dynamically while traversing",
document: `{c: banana}`,
expression: `.a.b`,
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expected: []string{
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"D0, P[a b], (!!null)::null\n",
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},
},
{
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skipDoc: true,
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document: `{}`,
expression: `.[1].a`,
expected: []string{
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"D0, P[1 a], (!!null)::null\n",
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},
},
{
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skipDoc: true,
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document: `{}`,
expression: `.a.[1]`,
expected: []string{
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"D0, P[a 1], (!!null)::null\n",
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},
},
{
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description: "Wildcard matching",
document: `{a: {cat: apple, mad: things}}`,
expression: `.a."*a*"`,
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expected: []string{
"D0, P[a cat], (!!str)::apple\n",
"D0, P[a mad], (!!str)::things\n",
},
},
{
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skipDoc: true,
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document: `{a: {cat: {b: 3}, mad: {b: 4}, fad: {c: t}}}`,
expression: `.a."*a*".b`,
expected: []string{
"D0, P[a cat b], (!!int)::3\n",
"D0, P[a mad b], (!!int)::4\n",
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"D0, P[a fad b], (!!null)::null\n",
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},
},
{
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skipDoc: true,
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document: `{a: {cat: apple, mad: things}}`,
expression: `.a | (.cat, .mad)`,
expected: []string{
"D0, P[a cat], (!!str)::apple\n",
"D0, P[a mad], (!!str)::things\n",
},
},
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{
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skipDoc: true,
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document: `{a: {cat: apple, mad: things}}`,
expression: `.a | (.cat, .mad, .fad)`,
expected: []string{
"D0, P[a cat], (!!str)::apple\n",
"D0, P[a mad], (!!str)::things\n",
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"D0, P[a fad], (!!null)::null\n",
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},
},
{
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skipDoc: true,
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document: `{a: {cat: apple, mad: things}}`,
expression: `.a | (.cat, .mad, .fad) | select( (. == null) | not)`,
expected: []string{
"D0, P[a cat], (!!str)::apple\n",
"D0, P[a mad], (!!str)::things\n",
},
},
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{
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description: "Aliases",
document: `{a: &cat {c: frog}, b: *cat}`,
expression: `.b`,
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expected: []string{
"D0, P[b], (alias)::*cat\n",
},
},
{
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description: "Traversing aliases with splat",
document: `{a: &cat {c: frog}, b: *cat}`,
expression: `.b.[]`,
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expected: []string{
"D0, P[b c], (!!str)::frog\n",
},
},
{
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description: "Traversing aliases explicitly",
document: `{a: &cat {c: frog}, b: *cat}`,
expression: `.b.c`,
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expected: []string{
"D0, P[b c], (!!str)::frog\n",
},
},
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{
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skipDoc: true,
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document: `[1,2,3]`,
expression: `.b`,
expected: []string{},
},
{
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description: "Traversing arrays by index",
document: `[1,2,3]`,
expression: `.[0]`,
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expected: []string{
"D0, P[0], (!!int)::1\n",
},
},
{
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description: "Maps with numeric keys",
document: `{2: cat}`,
expression: `.[2]`,
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expected: []string{
"D0, P[2], (!!str)::cat\n",
},
},
{
description: "Maps with non existing numeric keys",
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document: `{a: b}`,
expression: `.[0]`,
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expected: []string{
"D0, P[0], (!!null)::null\n",
},
},
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{
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skipDoc: true,
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document: mergeDocSample,
expression: `.foobar`,
expected: []string{
"D0, P[foobar], (!!map)::c: foobar_c\n!!merge <<: *foo\nthing: foobar_thing\n",
},
},
{
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description: "Traversing merge anchors",
document: mergeDocSample,
expression: `.foobar.a`,
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expected: []string{
"D0, P[foobar a], (!!str)::foo_a\n",
},
},
{
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description: "Traversing merge anchors with override",
document: mergeDocSample,
expression: `.foobar.c`,
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expected: []string{
"D0, P[foobar c], (!!str)::foo_c\n",
},
},
{
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description: "Traversing merge anchors with local override",
document: mergeDocSample,
expression: `.foobar.thing`,
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expected: []string{
"D0, P[foobar thing], (!!str)::foobar_thing\n",
},
},
{
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description: "Splatting merge anchors",
document: mergeDocSample,
expression: `.foobar.[]`,
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expected: []string{
"D0, P[foobar c], (!!str)::foo_c\n",
"D0, P[foobar a], (!!str)::foo_a\n",
"D0, P[foobar thing], (!!str)::foobar_thing\n",
},
},
{
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skipDoc: true,
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document: mergeDocSample,
expression: `.foobarList`,
expected: []string{
"D0, P[foobarList], (!!map)::b: foobarList_b\n!!merge <<: [*foo, *bar]\nc: foobarList_c\n",
},
},
{
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skipDoc: true,
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document: mergeDocSample,
expression: `.foobarList.a`,
expected: []string{
"D0, P[foobarList a], (!!str)::foo_a\n",
},
},
{
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description: "Traversing merge anchor lists",
subdescription: "Note that the later merge anchors override previous",
document: mergeDocSample,
expression: `.foobarList.thing`,
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expected: []string{
"D0, P[foobarList thing], (!!str)::bar_thing\n",
},
},
{
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skipDoc: true,
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document: mergeDocSample,
expression: `.foobarList.c`,
expected: []string{
"D0, P[foobarList c], (!!str)::foobarList_c\n",
},
},
{
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skipDoc: true,
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document: mergeDocSample,
expression: `.foobarList.b`,
expected: []string{
"D0, P[foobarList b], (!!str)::bar_b\n",
},
},
{
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description: "Splatting merge anchor lists",
document: mergeDocSample,
expression: `.foobarList.[]`,
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expected: []string{
"D0, P[foobarList b], (!!str)::bar_b\n",
"D0, P[foobarList a], (!!str)::foo_a\n",
"D0, P[foobarList thing], (!!str)::bar_thing\n",
"D0, P[foobarList c], (!!str)::foobarList_c\n",
},
},
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}
func TestTraversePathOperatorScenarios(t *testing.T) {
for _, tt := range traversePathOperatorScenarios {
testScenario(t, &tt)
}
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documentScenarios(t, "Traverse", traversePathOperatorScenarios)
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}