Finished phase005

spec/models/fuel_entry_spec.rb

@@ -35,4 +35,26 @@ RSpec.describe FuelEntry do
     expect(entry).not_to be_valid
     expect(entry.errors[:date]).to be_present
   end
+
+  it "rejects odometer readings below the vehicle current odometer" do
+    vehicle = build(:vehicle, current_odometer: 10_000)
+    entry = build(:fuel_entry, vehicle: vehicle, odometer: 9_999)
+
+    expect(entry).not_to be_valid
+    expect(entry.errors[:odometer]).to be_present
+  end
+
+  it "allows odometer readings equal to the vehicle current odometer" do
+    vehicle = build(:vehicle, current_odometer: 10_000)
+    entry = build(:fuel_entry, vehicle: vehicle, odometer: 10_000)
+
+    expect(entry).to be_valid
+  end
+
+  it "allows odometer readings above the vehicle current odometer" do
+    vehicle = build(:vehicle, current_odometer: 10_000)
+    entry = build(:fuel_entry, vehicle: vehicle, odometer: 10_001)
+
+    expect(entry).to be_valid
+  end
 end