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execution_result_test.go
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execution_result_test.go
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package bramble
import (
"testing"
"github.com/stretchr/testify/require"
"github.com/vektah/gqlparser/v2"
"github.com/vektah/gqlparser/v2/ast"
"github.com/vektah/gqlparser/v2/gqlerror"
)
func TestMergeExecutionResults(t *testing.T) {
t.Run("merges single map", func(t *testing.T) {
inputMap := jsonToInterfaceMap(`{
"gizmo": {
"_bramble_id": "1",
"id": "1",
"color": "Gizmo A"
}
}`)
result := executionResult{
ServiceURL: "http://service-a",
InsertionPoint: []string{},
Data: inputMap,
}
mergedMap, err := mergeExecutionResults([]executionResult{result})
require.NoError(t, err)
require.Equal(t, inputMap, mergedMap)
})
t.Run("merges two top level results", func(t *testing.T) {
inputMapA := jsonToInterfaceMap(`{
"gizmoA": {
"id": "1",
"color": "Gizmo A"
}
}`)
resultA := executionResult{
ServiceURL: "http://service-a",
InsertionPoint: []string{},
Data: inputMapA,
}
inputMapB := jsonToInterfaceMap(`{
"gizmoB": {
"id": "2",
"color": "Gizmo B"
}
}`)
resultB := executionResult{
ServiceURL: "http://service-b",
InsertionPoint: []string{},
Data: inputMapB,
}
mergedMap, err := mergeExecutionResults([]executionResult{resultA, resultB})
expected := jsonToInterfaceMap(`{
"gizmoA": {
"id": "1",
"color": "Gizmo A"
},
"gizmoB": {
"id": "2",
"color": "Gizmo B"
}
}`)
require.NoError(t, err)
require.Equal(t, expected, mergedMap)
})
t.Run("merges mid level array", func(t *testing.T) {
inputMapA := jsonToInterfaceMap(`{
"gizmo": {
"_bramble_id": "1",
"_bramble__typename": "Gizmo",
"gadgets": [
{"_bramble_id": "GADGET1", "_bramble__typename": "Gadget", "owner": { "_bramble_id": "OWNER1", "_bramble__typename": "Owner" }},
{"_bramble_id": "GADGET3", "_bramble__typename": "Gadget", "owner": { "_bramble_id": "OWNER3", "_bramble__typename": "Owner" }},
{"_bramble_id": "GADGET2", "_bramble__typename": "Gadget", "owner": null}
]
}
}`)
resultA := executionResult{
ServiceURL: "http://service-a",
InsertionPoint: []string{},
Data: inputMapA,
}
inputMapB := jsonToInterfaceSlice(`[
{
"_bramble_id": "OWNER1",
"_bramble__typename": "Owner",
"name": "008"
}
]`)
resultB := executionResult{
ServiceURL: "http://service-b",
InsertionPoint: []string{"gizmo", "gadgets", "owner"},
Data: inputMapB,
}
mergedMap, err := mergeExecutionResults([]executionResult{resultA, resultB})
expected := jsonToInterfaceMap(`
{
"gizmo": {
"gadgets": [
{
"_bramble_id": "GADGET1",
"_bramble__typename": "Gadget",
"owner": {
"_bramble_id": "OWNER1",
"_bramble__typename": "Owner",
"name": "008"
}
},
{
"_bramble_id": "GADGET3",
"_bramble__typename": "Gadget",
"owner": {
"_bramble_id": "OWNER3",
"_bramble__typename": "Owner"
}
},
{
"_bramble_id": "GADGET2",
"_bramble__typename": "Gadget",
"owner": null
}
],
"_bramble_id": "1",
"_bramble__typename": "Gizmo"
}
}`)
require.NoError(t, err)
require.Equal(t, expected, mergedMap)
})
t.Run("merges nested mid-level array", func(t *testing.T) {
inputMapA := jsonToInterfaceMap(`{
"gizmo": {
"_bramble_id": "1",
"_bramble__typename": "Gizmo",
"gadgets": [
[
{"_bramble_id": "GADGET1", "_bramble__typename": "Gadget", "owner": { "_bramble_id": "OWNER1", "_bramble__typename": "Owner" }},
{"_bramble_id": "GADGET3", "_bramble__typename": "Gadget", "owner": { "_bramble_id": "OWNER3", "_bramble__typename": "Owner" }}
],
[
{"_bramble_id": "GADGET2", "_bramble__typename": "Gadget", "owner": null}
]
]
}
}`)
resultA := executionResult{
ServiceURL: "http://service-a",
InsertionPoint: []string{},
Data: inputMapA,
}
inputMapB := jsonToInterfaceSlice(`[
{
"_bramble_id": "OWNER1",
"_bramble__typename": "Owner",
"name": "008"
}
]`)
resultB := executionResult{
ServiceURL: "http://service-b",
InsertionPoint: []string{"gizmo", "gadgets", "owner"},
Data: inputMapB,
}
mergedMap, err := mergeExecutionResults([]executionResult{resultA, resultB})
expected := jsonToInterfaceMap(`
{
"gizmo": {
"gadgets": [
[
{
"_bramble_id": "GADGET1",
"_bramble__typename": "Gadget",
"owner": {
"_bramble_id": "OWNER1",
"_bramble__typename": "Owner",
"name": "008"
}
},
{
"_bramble_id": "GADGET3",
"_bramble__typename": "Gadget",
"owner": {
"_bramble_id": "OWNER3",
"_bramble__typename": "Owner"
}
}
],
[
{
"_bramble_id": "GADGET2",
"_bramble__typename": "Gadget",
"owner": null
}
]
],
"_bramble_id": "1",
"_bramble__typename": "Gizmo"
}
}`)
require.NoError(t, err)
require.Equal(t, expected, mergedMap)
})
t.Run("merges root step with child step (root step returns object, boundary field is non array)", func(t *testing.T) {
inputMapA := jsonToInterfaceMap(`{
"gizmo": {
"id": "1",
"color": "Gizmo A",
"owner": {
"_bramble_id": "1",
"_bramble__typename": "Owner"
}
}
}`)
resultA := executionResult{
ServiceURL: "http://service-a",
InsertionPoint: []string{},
Data: inputMapA,
}
inputSliceB := jsonToInterfaceSlice(`[
{
"_bramble_id": "1",
"_bramble__typename": "Owner",
"name": "Owner A"
}
]`)
resultB := executionResult{
ServiceURL: "http://service-b",
InsertionPoint: []string{"gizmo", "owner"},
Data: inputSliceB,
}
mergedMap, err := mergeExecutionResults([]executionResult{resultA, resultB})
expected := jsonToInterfaceMap(`{
"gizmo": {
"id": "1",
"color": "Gizmo A",
"owner": {
"_bramble_id": "1",
"_bramble__typename": "Owner",
"name": "Owner A"
}
}
}`)
require.NoError(t, err)
require.Equal(t, expected, mergedMap)
})
t.Run("merges root step with child step (root step returns array, boundary field is non array)", func(t *testing.T) {
inputMapA := jsonToInterfaceMap(`{
"gizmos": [
{
"id": "1",
"color": "RED",
"owner": {
"_bramble_id": "4",
"_bramble__typename": "Owner"
}
},
{
"id": "2",
"color": "GREEN",
"owner": {
"_bramble_id": "5",
"_bramble__typename": "Owner"
}
},
{
"id": "3",
"color": "BLUE",
"owner": {
"_bramble_id": "6",
"_bramble__typename": "Owner"
}
}
]
}`)
resultA := executionResult{
ServiceURL: "http://service-a",
InsertionPoint: []string{},
Data: inputMapA,
}
inputSliceB := jsonToInterfaceSlice(`[
{
"_bramble_id": "4",
"_bramble__typename": "Owner",
"name": "Owner A"
},
{
"_bramble_id": "5",
"_bramble__typename": "Owner",
"name": "Owner B"
},
{
"_bramble_id": "6",
"_bramble__typename": "Owner",
"name": "Owner C"
}
]`)
resultB := executionResult{
ServiceURL: "http://service-b",
InsertionPoint: []string{"gizmos", "owner"},
Data: inputSliceB,
}
mergedMap, err := mergeExecutionResults([]executionResult{resultA, resultB})
expected := jsonToInterfaceMap(`{
"gizmos": [
{
"id": "1",
"color": "RED",
"owner": {
"_bramble_id": "4",
"_bramble__typename": "Owner",
"name": "Owner A"
}
},
{
"id": "2",
"color": "GREEN",
"owner": {
"_bramble_id": "5",
"_bramble__typename": "Owner",
"name": "Owner B"
}
},
{
"id": "3",
"color": "BLUE",
"owner": {
"_bramble_id": "6",
"_bramble__typename": "Owner",
"name": "Owner C"
}
}
]
}`)
require.NoError(t, err)
require.Equal(t, expected, mergedMap)
})
t.Run("merges root step with child step (root step returns array, boundary field is array)", func(t *testing.T) {
inputMapA := jsonToInterfaceMap(`{
"gizmos": [
{
"id": "1",
"color": "RED",
"owner": {
"_bramble_id": "4",
"_bramble__typename": "Owner"
}
},
{
"id": "2",
"color": "GREEN",
"owner": {
"_bramble_id": "5",
"_bramble__typename": "Owner"
}
},
{
"id": "3",
"color": "BLUE",
"owner": {
"_bramble_id": "6",
"_bramble__typename": "Owner"
}
}
]
}`)
resultA := executionResult{
ServiceURL: "http://service-a",
InsertionPoint: []string{},
Data: inputMapA,
}
inputSliceB := jsonToInterfaceSlice(`[
{
"_bramble_id": "4",
"_bramble__typename": "Owner",
"name": "Owner A"
},
{
"_bramble_id": "5",
"_bramble__typename": "Owner",
"name": "Owner B"
},
{
"_bramble_id": "6",
"_bramble__typename": "Owner",
"name": "Owner C"
}
]`)
resultB := executionResult{
ServiceURL: "http://service-b",
InsertionPoint: []string{"gizmos", "owner"},
Data: inputSliceB,
}
mergedMap, err := mergeExecutionResults([]executionResult{resultA, resultB})
expected := jsonToInterfaceMap(`{
"gizmos": [
{
"id": "1",
"color": "RED",
"owner": {
"_bramble_id": "4",
"_bramble__typename": "Owner",
"name": "Owner A"
}
},
{
"id": "2",
"color": "GREEN",
"owner": {
"_bramble_id": "5",
"_bramble__typename": "Owner",
"name": "Owner B"
}
},
{
"id": "3",
"color": "BLUE",
"owner": {
"_bramble_id": "6",
"_bramble__typename": "Owner",
"name": "Owner C"
}
}
]
}`)
require.NoError(t, err)
require.Equal(t, expected, mergedMap)
})
t.Run("merges using '_bramble_id'", func(t *testing.T) {
inputMapA := jsonToInterfaceMap(`{
"gizmos": [
{
"_bramble_id": "1",
"_bramble__typename": "Gizmo",
"color": "RED",
"owner": {
"_bramble_id": "4",
"_bramble__typename": "Owner"
}
},
{
"_bramble_id": "2",
"_bramble__typename": "Gizmo",
"color": "GREEN",
"owner": {
"_bramble_id": "5",
"_bramble__typename": "Owner"
}
},
{
"_bramble_id": "3",
"_bramble__typename": "Gizmo",
"color": "BLUE",
"owner": {
"_bramble_id": "6",
"_bramble__typename": "Owner"
}
}
]
}`)
resultA := executionResult{
ServiceURL: "http://service-a",
InsertionPoint: []string{},
Data: inputMapA,
}
inputSliceB := jsonToInterfaceSlice(`[
{
"_bramble_id": "4",
"_bramble__typename": "Owner",
"name": "Owner A"
},
{
"_bramble_id": "5",
"_bramble__typename": "Owner",
"name": "Owner B"
},
{
"_bramble_id": "6",
"_bramble__typename": "Owner",
"name": "Owner C"
}
]`)
resultB := executionResult{
ServiceURL: "http://service-b",
InsertionPoint: []string{"gizmos", "owner"},
Data: inputSliceB,
}
mergedMap, err := mergeExecutionResults([]executionResult{resultA, resultB})
expected := jsonToInterfaceMap(`{
"gizmos": [
{
"_bramble_id": "1",
"_bramble__typename": "Gizmo",
"color": "RED",
"owner": {
"_bramble_id": "4",
"_bramble__typename": "Owner",
"name": "Owner A"
}
},
{
"_bramble_id": "2",
"_bramble__typename": "Gizmo",
"color": "GREEN",
"owner": {
"_bramble_id": "5",
"_bramble__typename": "Owner",
"name": "Owner B"
}
},
{
"_bramble_id": "3",
"_bramble__typename": "Gizmo",
"color": "BLUE",
"owner": {
"_bramble_id": "6",
"_bramble__typename": "Owner",
"name": "Owner C"
}
}
]
}`)
require.NoError(t, err)
require.Equal(t, expected, mergedMap)
})
t.Run("merges with nil destination", func(t *testing.T) {
inputMapA := jsonToInterfaceMap(`{
"gizmo": {
"_bramble_id": "1",
"_bramble__typename": "Gizmo",
"gadgets": [
[
{"_bramble_id": "GADGET1", "_bramble__typename": "Gadget", "details": { "owner": {"_bramble_id": "OWNER1", "_bramble__typename": "Owner" }}}
],
[
{"_bramble_id": "GADGET2", "_bramble__typename": "Gadget", "details": null}
]
]
}
}`)
resultA := executionResult{
ServiceURL: "http://service-a",
InsertionPoint: []string{},
Data: inputMapA,
}
inputMapB := jsonToInterfaceSlice(`[
{
"_bramble_id": "OWNER1",
"_bramble__typename": "Owner",
"name": "Alice"
}
]`)
resultB := executionResult{
ServiceURL: "http://service-b",
InsertionPoint: []string{"gizmo", "gadgets", "details", "owner"},
Data: inputMapB,
}
mergedMap, err := mergeExecutionResults([]executionResult{resultA, resultB})
expected := jsonToInterfaceMap(`
{
"gizmo": {
"gadgets": [
[
{
"_bramble_id": "GADGET1",
"_bramble__typename": "Gadget",
"details": {
"owner": {
"_bramble_id": "OWNER1",
"_bramble__typename": "Owner",
"name": "Alice"
}
}
}
],
[
{
"_bramble_id": "GADGET2",
"_bramble__typename": "Gadget",
"details": null
}
]
],
"_bramble_id": "1",
"_bramble__typename": "Gizmo"
}
}`)
require.NoError(t, err)
require.Equal(t, expected, mergedMap)
})
}
func TestBubbleUpNullValuesInPlace(t *testing.T) {
t.Run("no expected or unexpected nulls", func(t *testing.T) {
ddl := `
type Gizmo {
id: ID!
color: String!
owner: Owner
}
type Owner {
id: ID!
name: String!
}
type Query {
gizmos: [Gizmo!]!
getOwners(ids: [ID!]!): [Owner!]!
}`
result := jsonToInterfaceMap(`
{
"gizmos": [
{ "id": "GIZMO1" },
{ "id": "GIZMO2" },
{ "id": "GIZMO3" }
]
}
`)
schema := gqlparser.MustLoadSchema(&ast.Source{Name: "fixture", Input: ddl})
query := `
{
gizmos {
id
}
}`
document := gqlparser.MustLoadQuery(schema, query)
errs, err := bubbleUpNullValuesInPlace(schema, document.Operations[0].SelectionSet, result)
require.NoError(t, err)
require.Nil(t, errs)
})
t.Run("1 expected null (bubble to root)", func(t *testing.T) {
ddl := `
type Gizmo {
id: ID!
color: String!
owner: Owner
}
type Owner {
id: ID!
name: String!
}
type Query {
gizmos: [Gizmo!]!
getOwners(ids: [ID!]!): [Owner!]!
}`
result := jsonToInterfaceMap(`
{
"gizmos": [
{ "id": "GIZMO1", "color": "RED" },
{ "id": "GIZMO2", "color": "GREEN" },
{ "id": "GIZMO3", "color": null }
]
}
`)
schema := gqlparser.MustLoadSchema(&ast.Source{Name: "fixture", Input: ddl})
query := `
{
gizmos {
id
color
}
}`
document := gqlparser.MustLoadQuery(schema, query)
errs, err := bubbleUpNullValuesInPlace(schema, document.Operations[0].SelectionSet, result)
require.Equal(t, errNullBubbledToRoot, err)
require.Len(t, errs, 1)
})
t.Run("1 expected null (bubble to middle)", func(t *testing.T) {
ddl := `
type Gizmo {
id: ID!
color: String!
owner: Owner
}
type Owner {
id: ID!
name: String!
}
type Query {
gizmos: [Gizmo!]
getOwners(ids: [ID!]!): [Owner!]!
}`
result := jsonToInterfaceMap(`
{
"gizmos": [
{ "id": "GIZMO1", "color": "RED" },
{ "id": "GIZMO2", "color": "GREEN" },
{ "id": "GIZMO3", "color": null }
]
}
`)
schema := gqlparser.MustLoadSchema(&ast.Source{Name: "fixture", Input: ddl})
query := `
{
gizmos {
id
color
}
}`
document := gqlparser.MustLoadQuery(schema, query)
errs, err := bubbleUpNullValuesInPlace(schema, document.Operations[0].SelectionSet, result)
require.NoError(t, err)
require.Equal(t, []*gqlerror.Error([]*gqlerror.Error{
{
Message: `got a null response for non-nullable field "color"`,
Path: ast.Path{ast.PathName("gizmos"), ast.PathIndex(2), ast.PathName("color")},
Extensions: nil,
}}), errs)
require.Equal(t, jsonToInterfaceMap(`{ "gizmos": null }`), result)
})
t.Run("all nulls (bubble to middle)", func(t *testing.T) {
ddl := `
type Gizmo {
id: ID!
color: String!
owner: Owner
}
type Owner {
id: ID!
name: String!
}
type Query {
gizmos: [Gizmo!]
getOwners(ids: [ID!]!): [Owner!]!
}`
result := jsonToInterfaceMap(`
{
"gizmos": [
{ "id": "GIZMO1", "color": null },
{ "id": "GIZMO2", "color": null },
{ "id": "GIZMO3", "color": null }
]
}
`)
schema := gqlparser.MustLoadSchema(&ast.Source{Name: "fixture", Input: ddl})
query := `
{
gizmos {
id
color
}
}`
document := gqlparser.MustLoadQuery(schema, query)
errs, err := bubbleUpNullValuesInPlace(schema, document.Operations[0].SelectionSet, result)
require.NoError(t, err)
require.Equal(t, []*gqlerror.Error([]*gqlerror.Error{
{
Message: `got a null response for non-nullable field "color"`,
Path: ast.Path{ast.PathName("gizmos"), ast.PathIndex(0), ast.PathName("color")},
Extensions: nil,
},
{
Message: `got a null response for non-nullable field "color"`,
Path: ast.Path{ast.PathName("gizmos"), ast.PathIndex(1), ast.PathName("color")},
Extensions: nil,
},
{
Message: `got a null response for non-nullable field "color"`,
Path: ast.Path{ast.PathName("gizmos"), ast.PathIndex(2), ast.PathName("color")},
Extensions: nil,
},
}), errs)
require.Equal(t, jsonToInterfaceMap(`{ "gizmos": null }`), result)
})
t.Run("1 expected null (bubble to middle in array)", func(t *testing.T) {
ddl := `
type Gizmo {
id: ID!
color: String!
owner: Owner
}
type Owner {
id: ID!
name: String!
}
type Query {
gizmos: [Gizmo]!
getOwners(ids: [ID!]!): [Owner!]!
}`
result := jsonToInterfaceMap(`
{
"gizmos": [
{ "id": "GIZMO1", "color": "RED" },
{ "id": "GIZMO3", "color": null },
{ "id": "GIZMO2", "color": "GREEN" }
]
}
`)
schema := gqlparser.MustLoadSchema(&ast.Source{Name: "fixture", Input: ddl})
query := `
{
gizmos {
id
color
}
}`
document := gqlparser.MustLoadQuery(schema, query)
errs, err := bubbleUpNullValuesInPlace(schema, document.Operations[0].SelectionSet, result)
require.NoError(t, err)
require.Equal(t, []*gqlerror.Error([]*gqlerror.Error{
{
Message: `got a null response for non-nullable field "color"`,
Path: ast.Path{ast.PathName("gizmos"), ast.PathIndex(1), ast.PathName("color")},
Extensions: nil,
}}), errs)
require.Equal(t, jsonToInterfaceMap(`{ "gizmos": [ { "id": "GIZMO1", "color": "RED" }, null, { "id": "GIZMO2", "color": "GREEN" } ] }`), result)
})
t.Run("0 expected nulls", func(t *testing.T) {
ddl := `
type Gizmo {
id: ID!
color: String
owner: Owner
}
type Owner {
id: ID!
name: String!
}
type Query {
gizmos: [Gizmo!]!
getOwners(ids: [ID!]!): [Owner!]!
}`
resultJSON := `{
"gizmos": [
{ "id": "GIZMO1", "color": "RED" },
{ "id": "GIZMO2", "color": "GREEN" },
{ "id": "GIZMO3", "color": null }
]
}`
schema := gqlparser.MustLoadSchema(&ast.Source{Name: "fixture", Input: ddl})
query := `
{
gizmos {
id
color
}
}`
document := gqlparser.MustLoadQuery(schema, query)
result := jsonToInterfaceMap(resultJSON)
errs, err := bubbleUpNullValuesInPlace(schema, document.Operations[0].SelectionSet, result)
require.NoError(t, err)
require.Empty(t, errs)
require.Equal(t, jsonToInterfaceMap(resultJSON), result)
})
t.Run("works with fragment spreads", func(t *testing.T) {
ddl := `
type Gizmo {
id: ID!
color: String!
owner: Owner
}
type Owner {
id: ID!
name: String!
}
type Query {
gizmos: [Gizmo]!
getOwners(ids: [ID!]!): [Owner!]!
}`
resultJSON := `{
"gizmos": [
{ "id": "GIZMO1", "color": "RED", "_bramble__typename": "Gizmo" },
{ "id": "GIZMO2", "color": "GREEN", "_bramble__typename": "Gizmo" },
{ "id": "GIZMO3", "color": null, "_bramble__typename": "Gizmo" }
]
}`
schema := gqlparser.MustLoadSchema(&ast.Source{Name: "fixture", Input: ddl})
query := `
fragment GizmoDetails on Gizmo {
id
color
__typename
}
{
gizmos {
...GizmoDetails
}
}
`
document := gqlparser.MustLoadQuery(schema, query)
result := jsonToInterfaceMap(resultJSON)
errs, err := bubbleUpNullValuesInPlace(schema, document.Operations[0].SelectionSet, result)
require.NoError(t, err)
require.Equal(t, []*gqlerror.Error([]*gqlerror.Error{
{
Message: `got a null response for non-nullable field "color"`,
Path: ast.Path{ast.PathName("gizmos"), ast.PathIndex(2), ast.PathName("color")},
Extensions: nil,
}}), errs)
require.Equal(t, jsonToInterfaceMap(`{ "gizmos": [ { "id": "GIZMO1", "color": "RED", "_bramble__typename": "Gizmo" }, { "id": "GIZMO2", "color": "GREEN", "_bramble__typename": "Gizmo" }, null ] }`), result)
})
t.Run("works with inline fragments", func(t *testing.T) {