1 files changed, 45 insertions, 0 deletions
diff --git a/test/cepis/health_test.exs b/test/cepis/health_test.exs
new file mode 100644
index 0000000..47a49c2
--- /dev/null
+++ b/test/cepis/health_test.exs
@@ -0,0 +1,45 @@
+defmodule Cepis.HealthTest do
+  use Cepis.ServerCase
+
+  test "reads the live database identifier", %{server: server, client: client} do
+    body =
+      json(%{
+        "status" => "ok",
+        "dne" => "26071",
+        "ceps" => 1_596_168,
+        "geo" => 894_489,
+        "base_gerada_em" => "2026-07-24T03:48:28Z"
+      })
+
+    FakeServer.respond(server, "/health", {200, body, []})
+
+    assert {:ok, health} = Cepis.health(client)
+    assert Cepis.Health.ok?(health)
+    assert health.dne == "26071"
+    assert health.ceps == 1_596_168
+    assert health.geo == 894_489
+    assert health.base_gerada_em == "2026-07-24T03:48:28Z"
+  end
+
+  test "a degraded API is a diagnosis, not a failure", %{server: server, client: client} do
+    body = json(%{"status" => "degradado", "dne" => "", "ceps" => 0, "geo" => 0})
+    FakeServer.respond(server, "/health", {503, body, []})
+
+    assert {:ok, health} = Cepis.health(client)
+    refute Cepis.Health.ok?(health)
+    assert health.status == "degradado"
+  end
+
+  test "a 503 on /health is not retried", %{server: server, client: client} do
+    FakeServer.respond(server, "/health", {503, json(%{"status" => "degradado"}), []})
+
+    assert {:ok, _health} = Cepis.health(client)
+    assert FakeServer.count(server, "/health") == 1
+  end
+
+  test "the bang variant returns the struct", %{server: server, client: client} do
+    FakeServer.respond(server, "/health", {200, json(%{"status" => "ok"}), []})
+
+    assert %Cepis.Health{status: "ok"} = Cepis.health!(client)
+  end
+end