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// Copyright (C) MongoDB, Inc. 2017-present.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
package unified
import (
"context"
"encoding/hex"
"testing"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/bson/bsontype"
"go.mongodb.org/mongo-driver/internal/testutil/assert"
"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
)
func TestMatches(t *testing.T) {
ctx := context.Background()
unmarshalExtJSONValue := func(t *testing.T, str string) bson.RawValue {
t.Helper()
if str == "" {
return bson.RawValue{}
}
var val bson.RawValue
err := bson.UnmarshalExtJSON([]byte(str), false, &val)
assert.Nil(t, err, "UnmarshalExtJSON error: %v", err)
return val
}
marshalValue := func(t *testing.T, val interface{}) bson.RawValue {
t.Helper()
valType, data, err := bson.MarshalValue(val)
assert.Nil(t, err, "MarshalValue error: %v", err)
return bson.RawValue{
Type: valType,
Value: data,
}
}
assertMatches := func(t *testing.T, expected, actual bson.RawValue, shouldMatch bool) {
t.Helper()
err := verifyValuesMatch(ctx, expected, actual, true)
if shouldMatch {
assert.Nil(t, err, "expected values to match, but got comparison error %v", err)
return
}
assert.NotNil(t, err, "expected values to not match, but got no error")
}
t.Run("documents with extra keys allowed", func(t *testing.T) {
expectedDoc := `{"x": 1, "y": {"a": 1, "b": 2}}`
expectedVal := unmarshalExtJSONValue(t, expectedDoc)
extraKeysAtRoot := `{"x": 1, "y": {"a": 1, "b": 2}, "z": 3}`
extraKeysInEmbedded := `{"x": 1, "y": {"a": 1, "b": 2, "c": 3}}`
testCases := []struct {
name string
actual string
matches bool
}{
{"exact match", expectedDoc, true},
{"extra keys allowed at root-level", extraKeysAtRoot, true},
{"incorrect type for y", `{"x": 1, "y": 2}`, false},
{"extra keys prohibited in embedded documents", extraKeysInEmbedded, false},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
assertMatches(t, expectedVal, unmarshalExtJSONValue(t, tc.actual), tc.matches)
})
}
})
t.Run("documents with extra keys not allowed", func(t *testing.T) {
expected := unmarshalExtJSONValue(t, `{"x": 1}`)
actual := unmarshalExtJSONValue(t, `{"x": 1, "y": 1}`)
err := verifyValuesMatch(ctx, expected, actual, false)
assert.NotNil(t, err, "expected values to not match, but got no error")
})
t.Run("exists operator", func(t *testing.T) {
rootExists := unmarshalExtJSONValue(t, `{"x": {"$$exists": true}}`)
rootNotExists := unmarshalExtJSONValue(t, `{"x": {"$$exists": false}}`)
embeddedExists := unmarshalExtJSONValue(t, `{"x": {"y": {"$$exists": true}}}`)
embeddedNotExists := unmarshalExtJSONValue(t, `{"x": {"y": {"$$exists": false}}}`)
testCases := []struct {
name string
expected bson.RawValue
actual string
matches bool
}{
{"root - should exist and does", rootExists, `{"x": 1}`, true},
{"root - should exist and does not", rootExists, `{"y": 1}`, false},
{"root - should not exist and does", rootNotExists, `{"x": 1}`, false},
{"root - should not exist and does not", rootNotExists, `{"y": 1}`, true},
{"embedded - should exist and does", embeddedExists, `{"x": {"y": 1}}`, true},
{"embedded - should exist and does not", embeddedExists, `{"x": {}}`, false},
{"embedded - should not exist and does", embeddedNotExists, `{"x": {"y": 1}}`, false},
{"embedded - should not exist and does not", embeddedNotExists, `{"x": {}}`, true},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
assertMatches(t, tc.expected, unmarshalExtJSONValue(t, tc.actual), tc.matches)
})
}
})
t.Run("type operator", func(t *testing.T) {
singleType := unmarshalExtJSONValue(t, `{"x": {"$$type": "string"}}`)
arrayTypes := unmarshalExtJSONValue(t, `{"x": {"$$type": ["string", "bool"]}}`)
testCases := []struct {
name string
expected bson.RawValue
actual string
matches bool
}{
{"single type matches", singleType, `{"x": "foo"}`, true},
{"single type does not match", singleType, `{"x": 1}`, false},
{"multiple types matches first", arrayTypes, `{"x": "foo"}`, true},
{"multiple types matches second", arrayTypes, `{"x": true}`, true},
{"multiple types does not match", arrayTypes, `{"x": 1}`, false},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
assertMatches(t, tc.expected, unmarshalExtJSONValue(t, tc.actual), tc.matches)
})
}
})
t.Run("matchesHexBytes operator", func(t *testing.T) {
singleValue := unmarshalExtJSONValue(t, `{"$$matchesHexBytes": "DEADBEEF"}`)
document := unmarshalExtJSONValue(t, `{"x": {"$$matchesHexBytes": "DEADBEEF"}}`)
stringToBinary := func(str string) bson.RawValue {
hexBytes, err := hex.DecodeString(str)
assert.Nil(t, err, "hex.DecodeString error: %v", err)
return bson.RawValue{
Type: bsontype.Binary,
Value: bsoncore.AppendBinary(nil, 0, hexBytes),
}
}
testCases := []struct {
name string
expected bson.RawValue
actual bson.RawValue
matches bool
}{
{"single value matches", singleValue, stringToBinary("DEADBEEF"), true},
{"single value does not match", singleValue, stringToBinary("BEEF"), false},
{"document matches", document, marshalValue(t, bson.M{"x": stringToBinary("DEADBEEF")}), true},
{"document does not match", document, marshalValue(t, bson.M{"x": stringToBinary("BEEF")}), false},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
assertMatches(t, tc.expected, tc.actual, tc.matches)
})
}
})
t.Run("unsetOrMatches operator", func(t *testing.T) {
topLevel := unmarshalExtJSONValue(t, `{"$$unsetOrMatches": {"x": 1}}`)
nested := unmarshalExtJSONValue(t, `{"x": {"$$unsetOrMatches": {"y": 1}}}`)
testCases := []struct {
name string
expected bson.RawValue
actual string
matches bool
}{
{"top-level unset", topLevel, "", true},
{"top-level matches", topLevel, `{"x": 1}`, true},
{"top-level matches with extra keys", topLevel, `{"x": 1, "y": 1}`, true},
{"top-level does not match", topLevel, `{"x": 2}`, false},
{"nested unset", nested, `{}`, true},
{"nested matches", nested, `{"x": {"y": 1}}`, true},
{"nested field exists but is null", nested, `{"x": null}`, false}, // null should not be considered unset
{"nested does not match", nested, `{"x": {"y": 2}}`, false},
{"nested does not match due to extra keys", nested, `{"x": {"y": 1, "z": 1}}`, false},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
assertMatches(t, tc.expected, unmarshalExtJSONValue(t, tc.actual), tc.matches)
})
}
})
}
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