From ac769e656b122ff569c3f1534701b71e00fed586 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 27 Oct 2020 19:21:35 +0800
Subject: Split front and back end.

---
 .../Timeline.Tests/UsernameValidatorUnitTest.cs    | 78 ++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 BackEnd/Timeline.Tests/UsernameValidatorUnitTest.cs

(limited to 'BackEnd/Timeline.Tests/UsernameValidatorUnitTest.cs')

diff --git a/BackEnd/Timeline.Tests/UsernameValidatorUnitTest.cs b/BackEnd/Timeline.Tests/UsernameValidatorUnitTest.cs
new file mode 100644
index 00000000..5b568adf
--- /dev/null
+++ b/BackEnd/Timeline.Tests/UsernameValidatorUnitTest.cs
@@ -0,0 +1,78 @@
+using FluentAssertions;
+using Timeline.Models.Validation;
+using Timeline.Tests.Helpers;
+using Xunit;
+
+namespace Timeline.Tests
+{
+    public class UsernameValidatorUnitTest : IClassFixture<UsernameValidator>
+    {
+        private readonly UsernameValidator _validator;
+
+        public UsernameValidatorUnitTest(UsernameValidator validator)
+        {
+            _validator = validator;
+        }
+
+        private string FailAndMessage(string username)
+        {
+            var (result, message) = _validator.Validate(username);
+            result.Should().BeFalse();
+            return message;
+        }
+
+        [Fact]
+        public void NotString()
+        {
+            var (result, message) = _validator.Validate(123);
+            result.Should().BeFalse();
+            message.Should().ContainEquivalentOf("type");
+        }
+
+        [Fact]
+        public void Empty()
+        {
+            FailAndMessage("").Should().ContainEquivalentOf("empty");
+        }
+
+        [Theory]
+        [InlineData("!")]
+        [InlineData("!abc")]
+        [InlineData("ab c")]
+        [InlineData("ab c！")] // This is a chinese ! .
+        public void BadCharactor(string value)
+        {
+            FailAndMessage(value).Should().ContainEquivalentOf("invalid")
+                .And.ContainEquivalentOf("character");
+        }
+
+        [Fact]
+        public void TooLong()
+        {
+            FailAndMessage(new string('a', 40)).Should().ContainEquivalentOf("long");
+        }
+
+        [Fact(Skip = "Currently name can't be longer than 26. So this will print message of too long.")]
+        public void UniqueId()
+        {
+            FailAndMessage("e4c80127d092d9b2fc19c5e04612d4c0").Should().ContainEquivalentOf("unique id");
+        }
+
+        [Theory]
+        [InlineData(null)]
+        [InlineData("abc")]
+        [InlineData("-abc")]
+        [InlineData("_abc")]
+        [InlineData("abc-")]
+        [InlineData("abc_")]
+        [InlineData("a-bc")]
+        [InlineData("a-b-c")]
+        [InlineData("a-b_c")]
+        [InlineData("a-你好_c")]
+        public void Success(string value)
+        {
+            var (result, _) = _validator.Validate(value);
+            result.Should().BeTrue();
+        }
+    }
+}
-- 
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