fix: property type for '$.Benchmarks[].Measurements[].Nanoseconds'

Author: NelsonBN

.vscode/launch.json

@@ -13,7 +13,7 @@
         //"compare", "-f", "console", "-b", "../tests/test-data/report-02/Benchmark-report-full.json", "-t", "../tests/test-data/report-01/Benchmark-report-full.json", "-tm", "4%", "-ta", "5%"
         //"compare", "-f", "console", "-b", "../tests/test-data/report-01/Benchmark-report-full.json", "-t", "../tests/test-data/report-04/Benchmark-report-full.json"
         //"compare", "-f", "markdown", "-b", "../tests/test-data/report-01/Benchmark-report-full.json", "-t", "../tests/test-data/report-02/Benchmark-report-full.json", "-tm", "12ns", "-ta", "5%"
-        "compare", "-f", "console", "-f", "markdown", "-b", "../tests/test-data/report-10", "-t", "../tests/test-data/report-11"
+        "compare", "-f", "console", "-f", "markdown", "-b", "../tests/test-data/report-12", "-t", "../tests/test-data/report-11"
       ],
       "cwd": "${workspaceFolder}/src",
       "console": "internalConsole",

docs/test-data.md

@@ -115,6 +115,21 @@ Each test data folder typically contains the following files:
 
 **Best for**: Testing complex comparisons, multi-file scenarios, memory allocation changes
 
+---
+
+### 📊 `report-12` - Multi-Benchmark Classes (Comparison)
+- **Files**:
+  - `Demo.Benchmarks.ArrayProcessorBenchmarks-report-full.json`
+  - `Demo.Benchmarks.StringProcessorBenchmarks-report-full.json`
+- **Environment**: Linux Ubuntu 24.04.2 LTS (Noble Numbat)
+
+| Method         | Mean      | Allocated |
+|----------------|-----------|-----------|
+| GenerateArray  | 11.266 μs | 21.516 KB |
+| GenerateString | 1.915 ms  | 35.19 MB  |
+
+**Best for**: Testing decimal precision for $.Benchmarks[].Measurements[].Nanoseconds
+
 
 
 ## Sample Comparisons

src/Helpers/IOHelpers.cs

@@ -38,8 +38,17 @@ public static BenchmarkFullJsonResport[] ReadFullJsonReport(string? path)
         {
             var content = File.ReadAllText(paths[i]);
 
-            reports[i] = JsonSerializer.Deserialize<BenchmarkFullJsonResport>(content)
-                ?? throw new InvalidOperationException($"Failed to deserialize the {paths[i]} file.");
+            try
+            {
+                reports[i] = JsonSerializer.Deserialize<BenchmarkFullJsonResport>(content)
+                    ?? throw new InvalidOperationException($"Failed to deserialize the {paths[i]} file.");
+            }
+            catch (JsonException jsonException)
+            {
+                throw new InvalidOperationException(
+                    $"Failed to deserialize the file '{paths[i]}'. {jsonException.Message}",
+                    jsonException);
+            }
 
             reports[i].FilePath = Path.GetFullPath(paths[i]);
             reports[i].FileName = Path.GetFileName(paths[i]);

src/Models/FullJsonResport.cs

@@ -127,7 +127,7 @@ public sealed class MeasurementRecord
             public int LaunchIndex { get; set; }
             public int IterationIndex { get; set; }
             public int Operations { get; set; }
-            public int Nanoseconds { get; set; }
+            public decimal Nanoseconds { get; set; }
         }
 
         public sealed class MetricRecord

tests/PowerUtils.BenchmarkDotnet.Reporter.Tests/Helpers/IOHelpersTests/ReadFullJsonReportTest.cs

@@ -1,11 +1,30 @@
+using System;
 using System.IO;
 using System.Linq;
 using PowerUtils.BenchmarkDotnet.Reporter.Helpers;
+using PowerUtils.BenchmarkDotnet.Reporter.Models;
 
 namespace PowerUtils.BenchmarkDotnet.Reporter.Tests.Helpers.IOHelpersTests;
 
-public sealed class ReadFullJsonReportTest
+public sealed class ReadFullJsonReportTest : IDisposable
 {
+    private readonly string _tempDirectory;
+
+
+    public ReadFullJsonReportTest()
+    {
+        _tempDirectory = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString());
+        Directory.CreateDirectory(_tempDirectory);
+    }
+
+    public void Dispose()
+    {
+        if(Directory.Exists(_tempDirectory))
+        {
+            Directory.Delete(_tempDirectory, true);
+        }
+    }
+
     [Fact]
     public void When_Pass_Valid_File_Should_Return_Report()
     {
@@ -37,4 +56,31 @@ public void When_Read_Report_Should_Contain_FilePath_And_FileName()
         act.FilePath.ShouldBe(path);
         act.FileName.ShouldBe(fileName);
     }
+
+    [Fact]
+    public void When_File_With_Invalid_PropertyType_Should_Throw_InvalidOperationException_With_InnerException_JsonException()
+    {
+        // Arrange
+        var filePath = Path.Combine(_tempDirectory, $"{Guid.NewGuid()}{IOHelpers.REPORT_FILE_ENDS}");
+        File.WriteAllText(
+            filePath,
+            """
+            {
+                "HostEnvironmentInfo":{
+                    "ChronometerFrequency":{
+                        "Hertz":"1000000000"
+                    }
+                }
+            }
+            """);
+
+
+        // Act
+        BenchmarkFullJsonResport[] act() => IOHelpers.ReadFullJsonReport(filePath);
+
+
+        // Assert
+        Should.Throw<InvalidOperationException>(act)
+            .Message.ShouldStartWith($"Failed to deserialize the file '{filePath}'. ");
+    }
 }