Add HealthCheck E2E tests

Author: jviau

test/WebJobs.Script.Tests.Integration/WebHostEndToEnd/SamplesEndToEndTests_CSharp.cs

@@ -316,6 +316,37 @@ public async Task HostPing_Succeeds(string method)
             Assert.Equal("no-store, no-cache", cacheHeader);
         }
 
+        [Theory]
+        [InlineData("/runtime/health")]
+        [InlineData("/runtime/health/live")]
+        [InlineData("/runtime/health/ready")]
+        public async Task HealthCheck_AdminToken_Succeeds(string uri)
+        {
+            // token specified as bearer token
+            HttpRequestMessage request = new(HttpMethod.Get, uri);
+            string token = _fixture.Host.GenerateAdminJwtToken();
+            request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", token);
+            HttpResponseMessage response = await _fixture.Host.HttpClient.SendAsync(request);
+            Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+            
+            string body = await response.Content.ReadAsStringAsync();
+            Assert.Equal("{\"status\":\"Healthy\"}", body);
+        }
+
+        [Theory]
+        [InlineData("/runtime/health")]
+        [InlineData("/runtime/health/live")]
+        [InlineData("/runtime/health/ready")]
+        public async Task HealthCheck_NoAdminToken_Fail(string uri)
+        {
+            // token specified as bearer token
+            HttpRequestMessage request = new(HttpMethod.Get, uri);
+            string token = _fixture.Host.GenerateAdminJwtToken();
+            request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", token);
+            HttpResponseMessage response = await _fixture.Host.HttpClient.SendAsync(request);
+            Assert.Equal(HttpStatusCode.Unauthorized, response.StatusCode);
+        }
+
         [Fact]
         public async Task InstallExtensionsEnsureOldPathReturns404()
         {