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Demonstrate poor handling of cyclic datastructures #111

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57 changes: 57 additions & 0 deletions query_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,16 @@ import (
"github.com/pmezard/go-difflib/difflib"
)

type CyclicParent struct {
Name string
Child *CyclicChild
}

type CyclicChild struct {
Name string
Parent *CyclicParent
}

// TestMarshalQuery tests the MarshalQuery function.
func TestMarshalQuery(t *testing.T) {
tt := []struct {
Expand Down Expand Up @@ -321,6 +331,53 @@ differentField
testQuery {
overrideName
}
}`,
},
{
Name: "CyclicStructuresWithFields",
Input: struct {
TestQuery struct {
Parent *CyclicParent
}
}{},
Fields: Fields{
"parent": Fields{
"name": true,
"child": Fields{
"name": true,
},
},
},
Option: OptFallbackJSONTag,
ExpectedOutput: `query {
testQuery {
parent {
name
child {
name
}
}
}
}`,
},
{
Name: "CyclicStructuresWithoutFields",
Input: struct {
TestQuery struct {
Parent *CyclicParent
}
}{},
Fields: nil,
Option: OptFallbackJSONTag,
ExpectedOutput: `query {
testQuery {
parent {
name
child {
name
}
}
}
}`,
},
}
Expand Down
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