tests

Author: KSemenenko

AGENTS.md

@@ -10,6 +10,7 @@ If I tell you to remember something, you do the same, update
 
 ## Rules to follow
 - MIME handling: always use `ManagedCode.MimeTypes` for MIME constants, lookups, and validation logic.
+- Treat this repository as a high-fidelity port of `microsoft-markitdown`: every test fixture copied from the upstream `tests/test_files/` directory must be referenced by .NET tests (either as positive conversions or explicit unsupported cases). No orphaned fixtures.
 
 # Repository Guidelines
 

tests/MarkItDown.Tests/MarkItDownIntegrationTests.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Text;
@@ -11,6 +12,12 @@ namespace MarkItDown.Tests;
 public class MarkItDownIntegrationTests
 {
     public static IEnumerable<object[]> GeneralVectors => TestVectorsData.General.Select(v => new object[] { v });
+    public static IEnumerable<object[]> UnsupportedVectors => new List<object[]>
+    {
+        new object[] { "random.bin", new StreamInfo(mimeType: "application/octet-stream", extension: ".bin") },
+        new object[] { "test.xls", new StreamInfo(mimeType: "application/vnd.ms-excel", extension: ".xls") },
+        new object[] { "test_outlook_msg.msg", new StreamInfo(mimeType: "application/vnd.ms-outlook", extension: ".msg") },
+    };
 
     [Fact]
     public async Task ConvertAsync_WithValidFile_ReturnsSuccess()
@@ -405,6 +412,49 @@ public Task<DocumentConverterResult> ConvertAsync(Stream stream, StreamInfo stre
         }
     }
 
+    [Theory]
+    [MemberData(nameof(UnsupportedVectors))]
+    public async Task Convert_FilePath_UnsupportedThrows(string fileName, StreamInfo streamInfo)
+    {
+        Assert.NotNull(streamInfo);
+        var markItDown = new global::MarkItDown.MarkItDown();
+        var path = TestAssetLoader.GetAssetPath(fileName);
+
+        await Assert.ThrowsAsync<UnsupportedFormatException>(() => markItDown.ConvertAsync(path));
+    }
+
+    [Theory]
+    [MemberData(nameof(UnsupportedVectors))]
+    public async Task Convert_StreamWithHints_UnsupportedThrows(string fileName, StreamInfo streamInfo)
+    {
+        var markItDown = new global::MarkItDown.MarkItDown();
+        await using var stream = TestAssetLoader.OpenAsset(fileName);
+
+        await Assert.ThrowsAsync<UnsupportedFormatException>(() => markItDown.ConvertAsync(stream, streamInfo));
+    }
+
+    [Theory]
+    [MemberData(nameof(UnsupportedVectors))]
+    public async Task Convert_StreamWithoutHints_UnsupportedThrows(string fileName, StreamInfo streamInfo)
+    {
+        Assert.NotNull(streamInfo);
+        var markItDown = new global::MarkItDown.MarkItDown();
+        await using var stream = TestAssetLoader.OpenAsset(fileName);
+
+        await Assert.ThrowsAsync<UnsupportedFormatException>(() => markItDown.ConvertAsync(stream, new StreamInfo()));
+    }
+
+    [Theory]
+    [MemberData(nameof(UnsupportedVectors))]
+    public async Task Convert_DataUri_UnsupportedThrows(string fileName, StreamInfo streamInfo)
+    {
+        var markItDown = new global::MarkItDown.MarkItDown();
+        var bytes = await File.ReadAllBytesAsync(TestAssetLoader.GetAssetPath(fileName));
+        var dataUri = $"data:{streamInfo.MimeType ?? "application/octet-stream"};base64,{Convert.ToBase64String(bytes)}";
+
+        await Assert.ThrowsAsync<UnsupportedFormatException>(() => markItDown.ConvertUriAsync(dataUri));
+    }
+
     private static void AssertVectorOutput(FileTestVector vector, DocumentConverterResult result)
     {
         Assert.NotNull(result);

tests/MarkItDown.Tests/TestVectorsData.cs

@@ -105,6 +105,18 @@ internal static class TestVectorsData
             MustNotInclude: Array.Empty<string>(),
             SupportsStreamGuess: false
         ),
+        new(
+            FileName: "equations.docx",
+            MimeType: "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
+            Charset: null,
+            Url: null,
+            MustInclude: new[]
+            {
+                "From Eq. 36.1.3",
+            },
+            MustNotInclude: Array.Empty<string>(),
+            SupportsStreamGuess: false
+        ),
         new(
             FileName: "test_serp.html",
             MimeType: "text/html",
@@ -117,6 +129,16 @@ internal static class TestVectorsData
             },
             MustNotInclude: Array.Empty<string>()
         ),
+        new(
+            FileName: "test.epub",
+            MimeType: "application/epub+zip",
+            Charset: null,
+            Url: null,
+            MustInclude: Array.Empty<string>(),
+            MustNotInclude: Array.Empty<string>(),
+            SupportsStreamGuess: false,
+            SupportsDataUri: false
+        ),
         new(
             FileName: "test_mskanji.csv",
             MimeType: "text/csv",
@@ -226,5 +248,17 @@ internal static class TestVectorsData
             },
             MustNotInclude: Array.Empty<string>()
         ),
+        new(
+            FileName: "test.jpg",
+            MimeType: "image/jpeg",
+            Charset: null,
+            Url: null,
+            MustInclude: new[]
+            {
+                "*No image metadata available.*",
+            },
+            MustNotInclude: Array.Empty<string>(),
+            SupportsStreamGuess: false
+        ),
     };
 }