tests: adds unit tests to validate terse from settings is being used

Signed-off-by: Vincent Biret <vibiret@microsoft.com>

Author: baywet

test/Microsoft.OpenApi.Tests/Extensions/OpenApiSerializableExtensionsTests.cs

@@ -0,0 +1,93 @@
+using System.IO;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace Microsoft.OpenApi.Tests.Extensions;
+
+public class OpenApiSerializableExtensionsTests
+{
+    [Fact]
+    public async Task UsesTheTerseOutputInformationFromSettingsTrue()
+    {
+        var parameter = new OpenApiParameter
+        {
+            Name = "param1",
+            In = ParameterLocation.Query,
+            Description = "A sample parameter",
+            Required = false,
+            Schema = new OpenApiSchema
+            {
+                Type = JsonSchemaType.String
+            }
+        };
+
+        var settings = new OpenApiJsonWriterSettings
+        {
+            Terse = true
+        };
+
+        using var stream = new MemoryStream();
+        await parameter.SerializeAsync(stream, OpenApiSpecVersion.OpenApi3_1, OpenApiConstants.Json, settings);
+
+        stream.Position = 0;
+        using var reader = new StreamReader(stream);
+        var output = await reader.ReadToEndAsync();
+
+        Assert.Equal("{\"name\":\"param1\",\"in\":\"query\",\"description\":\"A sample parameter\",\"schema\":{\"type\":\"string\"}}", output);
+    }
+
+    [Fact]
+    public async Task UsesTheTerseOutputInformationFromSettingsFalse()
+    {
+        var parameter = new OpenApiParameter
+        {
+            Name = "param1",
+            In = ParameterLocation.Query,
+            Description = "A sample parameter",
+            Required = false,
+            Schema = new OpenApiSchema
+            {
+                Type = JsonSchemaType.String
+            }
+        };
+
+        var settings = new OpenApiJsonWriterSettings
+        {
+            Terse = false
+        };
+
+        using var stream = new MemoryStream();
+        await parameter.SerializeAsync(stream, OpenApiSpecVersion.OpenApi3_1, OpenApiConstants.Json, settings);
+
+        stream.Position = 0;
+        using var reader = new StreamReader(stream);
+        var output = await reader.ReadToEndAsync();
+
+        Assert.Equal("{\n  \"name\": \"param1\",\n  \"in\": \"query\",\n  \"description\": \"A sample parameter\",\n  \"schema\": {\n    \"type\": \"string\"\n  }\n}", output);
+    }
+    
+    [Fact]
+    public async Task UsesTheTerseOutputInformationFromSettingsNoSettings()
+    {
+        var parameter = new OpenApiParameter
+        {
+            Name = "param1",
+            In = ParameterLocation.Query,
+            Description = "A sample parameter",
+            Required = false,
+            Schema = new OpenApiSchema
+            {
+                Type = JsonSchemaType.String
+            }
+        };
+
+        using var stream = new MemoryStream();
+        await parameter.SerializeAsync(stream, OpenApiSpecVersion.OpenApi3_1, OpenApiConstants.Json, null);
+
+        stream.Position = 0;
+        using var reader = new StreamReader(stream);
+        var output = await reader.ReadToEndAsync();
+
+        Assert.Equal("{\n  \"name\": \"param1\",\n  \"in\": \"query\",\n  \"description\": \"A sample parameter\",\n  \"schema\": {\n    \"type\": \"string\"\n  }\n}", output);
+    }
+}