From 3bf95ba352f2506cf13204ee35740fe78aeac2f0 Mon Sep 17 00:00:00 2001
From: OlexanderVanzuriak <sashavanzuriak@gmail.com>
Date: Wed, 27 Nov 2024 13:24:59 +0200
Subject: [PATCH] Added calculation service helper test

---
 .../calculation_service_helper_spec.rb        | 45 +++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 spec/helpers/calculators/calculation_service_helper_spec.rb

diff --git a/spec/helpers/calculators/calculation_service_helper_spec.rb b/spec/helpers/calculators/calculation_service_helper_spec.rb
new file mode 100644
index 000000000..d095e2bb3
--- /dev/null
+++ b/spec/helpers/calculators/calculation_service_helper_spec.rb
@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+RSpec.describe Calculators::CalculationService, type: :helper do
+    let(:calculator) { instance_double("Calculator", formulas: formulas) }
+    let(:formulas) do
+      [
+        instance_double("Formula", expression: "x + y", en_label: "Addition", en_unit: "units", uk_label: "Додавання", uk_unit: "одиниці"),
+        instance_double("Formula", expression: "x * y", en_label: "Multiplication", en_unit: "units", uk_label: "Множення", uk_unit: "одиниці")
+      ]
+    end
+    let(:inputs) { ActionController::Parameters.new({ x: 5, y: 3 }) }
+    
+    before do
+      allow_any_instance_of(ApplicationHelper).to receive(:current_locale?).with(:en).and_return(locale_en)
+    end
+  
+    describe "#perform" do
+      subject { described_class.new(calculator, inputs).perform }
+  
+      context "when locale is English" do
+        let(:locale_en) { true }
+  
+        it "returns results with English labels and units" do
+          expect(subject).to eq([
+            { label: "Addition", result: 8, en_unit: "units" },
+            { label: "Multiplication", result: 15, en_unit: "units" }
+          ])
+        end
+      end
+  
+      context "when locale is Ukrainian" do
+        let(:locale_en) { false }
+  
+        it "returns results with Ukrainian labels and units" do
+          expect(subject).to eq([
+            { label: "Додавання", result: 8, en_unit: "одиниці" },
+            { label: "Множення", result: 15, en_unit: "одиниці" }
+          ])
+        end
+      end
+    end
+  end
+  
\ No newline at end of file