feat(notifications): EmailTransport enum + parser for the EWS transport discriminator

2026-08-10 06:07:14 -04:00
parent 9f4d7d4bcb
commit d21b7a5a48
2 changed files with 90 additions and 0 deletions
@@ -0,0 +1,40 @@
+namespace ZB.MOM.WW.ScadaBridge.NotificationService.Tests;
+
+/// <summary>
+/// Tests for parsing the configured email transport discriminator into the two-state enum.
+/// </summary>
+public class EmailTransportParserTests
+{
+    [Theory]
+    [InlineData("Smtp", EmailTransport.Smtp)]
+    [InlineData("smtp", EmailTransport.Smtp)]
+    [InlineData("SMTP", EmailTransport.Smtp)]
+    [InlineData("Ews", EmailTransport.Ews)]
+    [InlineData("ews", EmailTransport.Ews)]
+    [InlineData("EWS", EmailTransport.Ews)]
+    [InlineData("  ews  ", EmailTransport.Ews)]
+    public void Parse_KnownTransports_ReturnsExpected(string input, EmailTransport expected)
+    {
+        Assert.Equal(expected, EmailTransportParser.Parse(input));
+    }
+
+    [Theory]
+    [InlineData(null)]
+    [InlineData("")]
+    [InlineData("   ")]
+    public void Parse_NullOrEmpty_DefaultsToSmtp(string? input)
+    {
+        // Every pre-EWS SmtpConfiguration row stores no transport; those rows are SMTP rows.
+        Assert.Equal(EmailTransport.Smtp, EmailTransportParser.Parse(input));
+    }
+
+    [Theory]
+    [InlineData("Graph")]
+    [InlineData("smtps")]
+    public void Parse_UnknownTransport_Throws(string input)
+    {
+        // An unknown transport must be rejected, not silently treated as SMTP.
+        var ex = Assert.Throws<ArgumentException>(() => EmailTransportParser.Parse(input));
+        Assert.Contains(input, ex.Message);
+    }
+}