test: Coverage schema statuses/0 + eirp_dbm + location helpers

test/towerops/coverages/coverage_test.exs

@@ -220,6 +220,44 @@ defmodule Towerops.Coverages.CoverageTest do
     end
   end
 
+  describe "statuses/0" do
+    test "returns the canonical list of valid status values" do
+      list = Coverage.statuses()
+      assert is_list(list)
+      assert "draft" in list
+      assert "computing" in list
+    end
+  end
+
+  describe "eirp_dbm/2" do
+    test "returns tx_power + antenna_gain - cable_loss" do
+      coverage = %Coverage{tx_power_dbm: 23.0, cable_loss_db: 0.5}
+      assert Coverage.eirp_dbm(coverage, 16.0) == 23.0 + 16.0 - 0.5
+    end
+
+    test "treats nil tx_power and cable_loss as zero" do
+      coverage = %Coverage{tx_power_dbm: nil, cable_loss_db: nil}
+      assert Coverage.eirp_dbm(coverage, 10.5) == 10.5
+    end
+  end
+
+  describe "location/1" do
+    test "returns the per-coverage override when set" do
+      coverage = %Coverage{latitude_override: 30.27, longitude_override: -97.74}
+      assert Coverage.location(coverage) == {30.27, -97.74}
+    end
+
+    test "falls back to site coordinates when override is unset" do
+      coverage = %Coverage{site: %{latitude: 32.0, longitude: -96.5}}
+      assert Coverage.location(coverage) == {32.0, -96.5}
+    end
+
+    test "returns nil when neither override nor site coordinates are present" do
+      assert Coverage.location(%Coverage{}) == nil
+      assert Coverage.location(%Coverage{site: %{latitude: nil, longitude: nil}}) == nil
+    end
+  end
+
   defp changeset_error?(changeset, field) do
     Keyword.has_key?(changeset.errors, field)
   end