Add tests

Author: Enkidu93

src/Serval/test/Serval.E2ETests/ServalApiTests.cs

@@ -292,6 +292,7 @@ public async Task Nmt_Paratext(bool withAdditionalFiles)
         string buildId = await _helperClient.BuildEngineAsync(engineId);
         TranslationBuild build = await _helperClient.TranslationEnginesClient.GetBuildAsync(engineId, buildId);
         Assert.That(build.State, Is.EqualTo(JobState.Completed), JsonSerializer.Serialize(build));
+        Assert.That(build.ExecutionData.AveragePretranslationConfidence, Is.GreaterThan(0.3));
 
         IList<Pretranslation> translations = await _helperClient.TranslationEnginesClient.GetAllPretranslationsAsync(
             engineId,

src/Serval/test/Serval.Translation.Tests/Services/PlatformServiceTests.cs

@@ -56,6 +56,10 @@ await env.Builds.InsertAsync(
         await env.PlatformService.InsertPretranslationsAsync("e0", "b0", GetTestPretranslations());
         await env.PlatformService.BuildCompletedAsync("b0", 0, 0.0);
         Assert.That(env.Pretranslations.Count, Is.EqualTo(1));
+        Assert.That(
+            (await env.Builds.GetAsync(b => b.Id == "b0"))?.ExecutionData.AveragePretranslationConfidence,
+            Is.Zero
+        );
     }
 
     [Test]