(maint) Add checks for aggregate exception and check them in unit tests

Author: AdmiringWorm

Source/GitReleaseManager.Cli/Program.cs

@@ -55,6 +55,16 @@ private static async Task<int> Main(string[] args)
                     (LabelSubOptions opts) => CreateLabelsAsync(opts),
                     errs => Task.FromResult(1)).ConfigureAwait(false);
             }
+            catch (AggregateException ex)
+            {
+                Log.Fatal("{Message}", ex.Message);
+                foreach (var innerException in ex.InnerExceptions)
+                {
+                    Log.Fatal(ex, "{Message}", ex.Message);
+                }
+
+                return 1;
+            }
             catch (Exception ex)
             {
                 Log.Fatal(ex, "{Message}", ex.Message);

Source/GitReleaseManager.Tests/ReleaseNotesBuilderTests.cs

@@ -21,7 +21,8 @@ public class ReleaseNotesBuilderTests
         [Test]
         public void NoCommitsNoIssues()
         {
-            Assert.Throws<AggregateException>(() => AcceptTest(0));
+            var exception = Assert.Throws<AggregateException>(() => AcceptTest(0));
+            Assert.That(exception.InnerException, Is.Not.Null.And.TypeOf<InvalidOperationException>());
         }
 
         [Test]
@@ -34,7 +35,8 @@ public void NoCommitsSomeIssues()
         [Test]
         public void SomeCommitsNoIssues()
         {
-            Assert.Throws<AggregateException>(() => AcceptTest(5));
+            var exception = Assert.Throws<AggregateException>(() => AcceptTest(5));
+            Assert.That(exception.InnerException, Is.Not.Null.And.TypeOf<InvalidOperationException>());
         }
 
         [Test]
@@ -47,7 +49,8 @@ public void SomeCommitsSomeIssues()
         [Test]
         public void SingularCommitsNoIssues()
         {
-            Assert.Throws<AggregateException>(() => AcceptTest(1));
+            var exception = Assert.Throws<AggregateException>(() => AcceptTest(1));
+            Assert.That(exception.InnerException, Is.Not.Null.And.TypeOf<InvalidOperationException>());
         }
 
         [Test]
@@ -116,13 +119,15 @@ public void SomeCommitsWithoutPluralizedLabelAlias()
         [Test]
         public void NoCommitsWrongIssueLabel()
         {
-            Assert.Throws<AggregateException>(() => AcceptTest(0, CreateIssue(1, "Test")));
+            var exception = Assert.Throws<AggregateException>(() => AcceptTest(0, CreateIssue(1, "Test")));
+            Assert.That(exception.InnerException, Is.Not.Null.And.TypeOf<InvalidOperationException>());
         }
 
         [Test]
         public void SomeCommitsWrongIssueLabel()
         {
-            Assert.Throws<AggregateException>(() => AcceptTest(5, CreateIssue(1, "Test")));
+            var exception = Assert.Throws<AggregateException>(() => AcceptTest(5, CreateIssue(1, "Test")));
+            Assert.That(exception.InnerException, Is.Not.Null.And.TypeOf<InvalidOperationException>());
         }
 
         [Test]