Reorganize Settings sections + add LLM model/prompt configs (#116)

* Reshuffle/organize settings UI
* Settings: AI prompt display/minor touch-ups
* API key settings tests
* Moved import/export together
* Collapsible LLM prompt DIVs
* Add export tests

test/models/family_export_test.rb

@@ -1,7 +1,131 @@
 require "test_helper"
 
 class FamilyExportTest < ActiveSupport::TestCase
-  # test "the truth" do
-  #   assert true
-  # end
+  setup do
+    @family = families(:dylan_family)
+    @export = @family.family_exports.create!
+  end
+
+  test "belongs to family" do
+    assert_equal @family, @export.family
+  end
+
+  test "has default status of pending" do
+    assert_equal "pending", @export.status
+  end
+
+  test "can have export file attached" do
+    @export.export_file.attach(
+      io: StringIO.new("test content"),
+      filename: "test.zip",
+      content_type: "application/zip"
+    )
+
+    assert @export.export_file.attached?
+    assert_equal "test.zip", @export.export_file.filename.to_s
+    assert_equal "application/zip", @export.export_file.content_type
+  end
+
+  test "filename is generated correctly" do
+    travel_to Time.zone.local(2024, 1, 15, 14, 30, 0) do
+      export = @family.family_exports.create!
+      expected_filename = "maybe_export_20240115_143000.zip"
+      assert_equal expected_filename, export.filename
+    end
+  end
+
+  test "downloadable? returns true for completed export with file" do
+    @export.update!(status: "completed")
+    @export.export_file.attach(
+      io: StringIO.new("test content"),
+      filename: "test.zip",
+      content_type: "application/zip"
+    )
+
+    assert @export.downloadable?
+  end
+
+  test "downloadable? returns false for pending export" do
+    @export.update!(status: "pending")
+    @export.export_file.attach(
+      io: StringIO.new("test content"),
+      filename: "test.zip",
+      content_type: "application/zip"
+    )
+
+    assert_not @export.downloadable?
+  end
+
+  test "downloadable? returns false for completed export without file" do
+    @export.update!(status: "completed")
+
+    assert_not @export.downloadable?
+  end
+
+  test "downloadable? returns false for failed export with file" do
+    @export.update!(status: "failed")
+    @export.export_file.attach(
+      io: StringIO.new("test content"),
+      filename: "test.zip",
+      content_type: "application/zip"
+    )
+
+    assert_not @export.downloadable?
+  end
+
+  test "export file is purged when export is destroyed" do
+    @export.export_file.attach(
+      io: StringIO.new("test content"),
+      filename: "test.zip",
+      content_type: "application/zip"
+    )
+
+    # Verify file is attached
+    assert @export.export_file.attached?
+    file_id = @export.export_file.id
+    blob_id = @export.export_file.blob.id
+
+    # Destroy the export
+    @export.destroy!
+
+    # Verify the export record is gone
+    assert_not FamilyExport.exists?(@export.id)
+
+    # Verify the Active Storage attachment is gone
+    assert_not ActiveStorage::Attachment.exists?(file_id)
+
+    # Note: Active Storage purges blobs asynchronously with dependent: :purge_later
+    # In tests, we can verify the attachment is gone, which is the immediate effect
+    # The blob will be purged in the background
+  end
+
+  test "can transition through statuses" do
+    assert_equal "pending", @export.status
+
+    @export.processing!
+    assert_equal "processing", @export.status
+
+    @export.completed!
+    assert_equal "completed", @export.status
+
+    @export.failed!
+    assert_equal "failed", @export.status
+  end
+
+  test "ordered scope returns exports in descending order" do
+    # Clear existing exports to avoid interference
+    @family.family_exports.destroy_all
+
+    # Create exports with specific timestamps
+    old_export = @family.family_exports.create!
+    old_export.update_column(:created_at, 2.days.ago)
+
+    new_export = @family.family_exports.create!
+    new_export.update_column(:created_at, 1.day.ago)
+
+    ordered_exports = @family.family_exports.ordered.to_a
+    assert_equal 2, ordered_exports.length
+    assert_equal new_export.id, ordered_exports.first.id
+    assert_equal old_export.id, ordered_exports.last.id
+  end
 end