1 files changed, 89 insertions, 0 deletions
diff --git a/spec/helpers/colors_helper_spec.rb b/spec/helpers/colors_helper_spec.rb
new file mode 100644
index 00000000000..ca5cafb7ebe
--- /dev/null
+++ b/spec/helpers/colors_helper_spec.rb
@@ -0,0 +1,89 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe ColorsHelper do
+  using RSpec::Parameterized::TableSyntax
+
+  describe '#hex_color_to_rgb_array' do
+    context 'valid hex color' do
+      where(:hex_color, :rgb_array) do
+        '#000000' | [0, 0, 0]
+        '#aaaaaa' | [170, 170, 170]
+        '#cCcCcC' | [204, 204, 204]
+        '#FFFFFF' | [255, 255, 255]
+        '#000abc' | [0, 10, 188]
+        '#123456' | [18, 52, 86]
+        '#a1b2c3' | [161, 178, 195]
+        '#000'    | [0, 0, 0]
+        '#abc'    | [170, 187, 204]
+        '#321'    | [51, 34, 17]
+        '#7E2'    | [119, 238, 34]
+        '#fFf'    | [255, 255, 255]
+      end
+
+      with_them do
+        it 'returns correct RGB array' do
+          expect(helper.hex_color_to_rgb_array(hex_color)).to eq(rgb_array)
+        end
+      end
+    end
+
+    context 'invalid hex color' do
+      where(:hex_color) { ['', '0', '#00', '#ffff', '#1234567', 'invalid', [], 1, nil] }
+
+      with_them do
+        it 'raise ArgumentError' do
+          expect { helper.hex_color_to_rgb_array(hex_color) }.to raise_error(ArgumentError)
+        end
+      end
+    end
+  end
+
+  describe '#rgb_array_to_hex_color' do
+    context 'valid RGB array' do
+      where(:rgb_array, :hex_color) do
+        [0, 0, 0]       | '#000000'
+        [0, 0, 255]     | '#0000ff'
+        [0, 255, 0]     | '#00ff00'
+        [255, 0, 0]     | '#ff0000'
+        [12, 34, 56]    | '#0c2238'
+        [222, 111, 88]  | '#de6f58'
+        [255, 255, 255] | '#ffffff'
+      end
+
+      with_them do
+        it 'returns correct hex color' do
+          expect(helper.rgb_array_to_hex_color(rgb_array)).to eq(hex_color)
+        end
+      end
+    end
+
+    context 'invalid RGB array' do
+      where(:rgb_array) do
+        [
+          '',
+          '#000000',
+          0,
+          nil,
+          [],
+          [0],
+          [0, 0],
+          [0, 0, 0, 0],
+          [-1, 0, 0],
+          [0, -1, 0],
+          [0, 0, -1],
+          [256, 0, 0],
+          [0, 256, 0],
+          [0, 0, 256]
+        ]
+      end
+
+      with_them do
+        it 'raise ArgumentError' do
+          expect { helper.rgb_array_to_hex_color(rgb_array) }.to raise_error(ArgumentError)
+        end
+      end
+    end
+  end
+end