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Compare json object values instead of byte streams when matching bodi…
…es that are content-type `json` (#8860)
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tools/test-proxy/Azure.Sdk.Tools.TestProxy/Common/JsonComparer.cs
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using System; | ||
using System.Collections.Generic; | ||
using System.Linq.Expressions; | ||
using System.Text; | ||
using System.Text.Json; | ||
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namespace Azure.Sdk.Tools.TestProxy.Common | ||
{ | ||
public class JsonComparer | ||
{ | ||
public static List<string> CompareJson(byte[] json1, byte[] json2) | ||
{ | ||
var differences = new List<string>(); | ||
JsonDocument doc1; | ||
JsonDocument doc2; | ||
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// Deserialize the byte arrays to JsonDocument | ||
try | ||
{ | ||
doc1 = JsonDocument.Parse(json1); | ||
} | ||
catch(Exception ex) | ||
{ | ||
differences.Add($"Unable to parse the request json body. Content \"{Encoding.UTF8.GetString(json1)}.\" Exception: {ex.Message}"); | ||
return differences; | ||
} | ||
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try | ||
{ | ||
doc2 = JsonDocument.Parse(json2); | ||
} | ||
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catch (Exception ex) | ||
{ | ||
differences.Add($"Unable to parse the record json body. Content \"{Encoding.UTF8.GetString(json2)}.\" Exception: {ex.Message}"); | ||
return differences; | ||
} | ||
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CompareElements(doc1.RootElement, doc2.RootElement, differences, ""); | ||
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return differences; | ||
} | ||
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private static void CompareElements(JsonElement element1, JsonElement element2, List<string> differences, string path) | ||
{ | ||
if (element1.ValueKind != element2.ValueKind) | ||
{ | ||
differences.Add($"{path}: Request and record have different types."); | ||
return; | ||
} | ||
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switch (element1.ValueKind) | ||
{ | ||
case JsonValueKind.Object: | ||
{ | ||
var properties1 = element1.EnumerateObject(); | ||
var properties2 = element2.EnumerateObject(); | ||
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var propDict1 = new Dictionary<string, JsonElement>(); | ||
var propDict2 = new Dictionary<string, JsonElement>(); | ||
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foreach (var prop in properties1) | ||
propDict1[prop.Name] = prop.Value; | ||
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foreach (var prop in properties2) | ||
propDict2[prop.Name] = prop.Value; | ||
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foreach (var key in propDict1.Keys) | ||
{ | ||
if (propDict2.ContainsKey(key)) | ||
{ | ||
CompareElements(propDict1[key], propDict2[key], differences, $"{path}.{key}"); | ||
} | ||
else | ||
{ | ||
differences.Add($"{path}.{key}: Missing in request JSON"); | ||
} | ||
} | ||
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foreach (var key in propDict2.Keys) | ||
{ | ||
if (!propDict1.ContainsKey(key)) | ||
{ | ||
differences.Add($"{path}.{key}: Missing in record JSON"); | ||
} | ||
} | ||
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break; | ||
} | ||
case JsonValueKind.Array: | ||
{ | ||
var array1 = element1.EnumerateArray(); | ||
var array2 = element2.EnumerateArray(); | ||
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int index = 0; | ||
var enum1 = array1.GetEnumerator(); | ||
var enum2 = array2.GetEnumerator(); | ||
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while (enum1.MoveNext() && enum2.MoveNext()) | ||
{ | ||
CompareElements(enum1.Current, enum2.Current, differences, $"{path}[{index}]"); | ||
index++; | ||
} | ||
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while (enum1.MoveNext()) | ||
{ | ||
differences.Add($"{path}[{index}]: Extra element in request JSON"); | ||
index++; | ||
} | ||
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while (enum2.MoveNext()) | ||
{ | ||
differences.Add($"{path}[{index}]: Extra element in record JSON"); | ||
index++; | ||
} | ||
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break; | ||
} | ||
case JsonValueKind.String: | ||
{ | ||
if (element1.GetString() != element2.GetString()) | ||
{ | ||
differences.Add($"{path}: \"{element1.GetString()}\" != \"{element2.GetString()}\""); | ||
} | ||
break; | ||
} | ||
case JsonValueKind.Number: | ||
{ | ||
if (element1.GetDecimal() != element2.GetDecimal()) | ||
{ | ||
differences.Add($"{path}: {element1.GetDecimal()} != {element2.GetDecimal()}"); | ||
} | ||
break; | ||
} | ||
case JsonValueKind.True: | ||
case JsonValueKind.False: | ||
{ | ||
if (element1.GetBoolean() != element2.GetBoolean()) | ||
{ | ||
differences.Add($"{path}: {element1.GetBoolean()} != {element2.GetBoolean()}"); | ||
} | ||
break; | ||
} | ||
case JsonValueKind.Null: | ||
{ | ||
// Both are null, nothing to compare | ||
break; | ||
} | ||
default: | ||
{ | ||
differences.Add($"{path}: Unhandled value kind {element1.ValueKind}"); | ||
break; | ||
} | ||
} | ||
} | ||
} | ||
} |
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