write tests for the delete logs form object

spec/models/forms/delete_logs_form_spec.rb

@@ -0,0 +1,89 @@
+require "rails_helper"
+
+RSpec.describe Forms::DeleteLogsForm do
+  let(:delete_logs_form) { described_class.new(attributes) }
+
+  let(:attributes) do
+    {
+      log_type:,
+      search_term:,
+      current_user:,
+      log_filters:,
+      selected_ids:,
+      delete_confirmation_path:,
+      back_to_logs_path:,
+      delete_path:,
+    }
+  end
+  let(:log_type) { :lettings }
+  let(:search_term) { "meaning" }
+  let(:current_user) { create(:user) }
+  let(:log_filters) do
+    {
+      "years" => [""],
+      "status" => ["", "completed"],
+      "user" => "yours",
+    }
+  end
+  let(:selected_ids) { [visible_logs.first.id] }
+  let(:delete_confirmation_path) { "/lettings-logs/delete-logs-confirmation" }
+  let(:back_to_logs_path) { "/lettings-logs?search=meaning" }
+  let(:delete_path) { "/lettings-logs/delete-logs" }
+
+  let(:visible_logs) { create_list(:lettings_log, 3, created_by: current_user) }
+
+  before do
+    allow(FilterManager).to receive(:filter_logs).and_return visible_logs
+  end
+
+  it "exposes the log type" do
+    expect(delete_logs_form.log_type).to be log_type
+  end
+
+  it "exposes the search term" do
+    expect(delete_logs_form.search_term).to be search_term
+  end
+
+  it "exposes the paths" do
+    expect(delete_logs_form.delete_confirmation_path).to be delete_confirmation_path
+    expect(delete_logs_form.back_to_logs_path).to be back_to_logs_path
+    expect(delete_logs_form.delete_path).to be delete_path
+  end
+
+  it "exposes the logs returned by the filter manager" do
+    expect(delete_logs_form.logs).to be visible_logs
+  end
+
+  it "exposes the selected ids" do
+    expect(delete_logs_form.selected_ids).to be selected_ids
+  end
+
+  context "when selected ids are not provided to the initializer" do
+    let(:selected_ids) { nil }
+
+    it "sets the selected ids to be all logs" do
+      expect(delete_logs_form.selected_ids).to match_array visible_logs.map(&:id)
+    end
+  end
+
+  it "calls the filter manager with the correct arguments" do
+    create(:lettings_log)
+
+    expect(FilterManager).to receive(:filter_logs) { |arg1, arg2, arg3, arg4, arg5|
+      expect(arg1).to contain_exactly(*visible_logs)
+      expect(arg2).to eq search_term
+      expect(arg3).to eq log_filters
+      expect(arg4).to be nil
+      expect(arg5).to be current_user
+    }.and_return visible_logs
+    delete_logs_form
+  end
+
+  it "exposes the number of logs" do
+    expect(delete_logs_form.log_count).to be visible_logs.count
+  end
+
+  it "provides the name of the table partial relevant to the log type" do
+    expect(delete_logs_form.table_partial_name).to eq "logs/delete_logs_table_lettings"
+  end
+end