wine-cellar

elixir/wine-cellar/test/test_helper.exs

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+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true, seed: 0)

elixir/wine-cellar/test/wine_cellar_test.exs

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+defmodule WineCellarTest do
+  use ExUnit.Case
+
+  describe "explain_colors/0" do
+    @tag task_id: 1
+    test "returns a keyword list" do
+      assert WineCellar.explain_colors() == [
+               white: "Fermented without skin contact.",
+               red: "Fermented with skin contact using dark-colored grapes.",
+               rose: "Fermented with some skin contact, but not enough to qualify as a red wine."
+             ]
+    end
+  end
+
+  describe "filter/3" do
+    @tag task_id: 2
+    test "works for empty cellar" do
+      assert WineCellar.filter([], :rose) == []
+    end
+
+    @tag task_id: 2
+    test "returns all wines of a chosen color" do
+      cellar = [
+        white: {"Chardonnay", 2015, "Italy"},
+        white: {"Chardonnay", 2014, "France"},
+        rose: {"Dornfelder", 2018, "Germany"},
+        red: {"Merlot", 2015, "France"},
+        white: {"Riesling ", 2017, "Germany"},
+        white: {"Pinot grigio", 2015, "Germany"},
+        red: {"Pinot noir", 2016, "France"},
+        red: {"Pinot noir", 2013, "Italy"}
+      ]
+
+      assert WineCellar.filter(cellar, :white) == [
+               {"Chardonnay", 2015, "Italy"},
+               {"Chardonnay", 2014, "France"},
+               {"Riesling ", 2017, "Germany"},
+               {"Pinot grigio", 2015, "Germany"}
+             ]
+
+      assert WineCellar.filter(cellar, :rose) == [{"Dornfelder", 2018, "Germany"}]
+    end
+
+    @tag task_id: 3
+    test "filters wines of chosen color by year" do
+      cellar = [
+        white: {"Chardonnay", 2015, "Italy"},
+        white: {"Chardonnay", 2014, "France"},
+        rose: {"Dornfelder", 2018, "Germany"},
+        red: {"Merlot", 2015, "France"},
+        white: {"Riesling ", 2017, "Germany"},
+        white: {"Pinot grigio", 2015, "Germany"},
+        red: {"Pinot noir", 2016, "France"},
+        red: {"Pinot noir", 2013, "Italy"}
+      ]
+
+      assert WineCellar.filter(cellar, :white, year: 2015) == [
+               {"Chardonnay", 2015, "Italy"},
+               {"Pinot grigio", 2015, "Germany"}
+             ]
+    end
+
+    @tag task_id: 4
+    test "filters wines of chosen color by country" do
+      cellar = [
+        white: {"Chardonnay", 2015, "Italy"},
+        white: {"Chardonnay", 2014, "France"},
+        rose: {"Dornfelder", 2018, "Germany"},
+        red: {"Merlot", 2015, "France"},
+        white: {"Riesling ", 2017, "Germany"},
+        white: {"Pinot grigio", 2015, "Germany"},
+        red: {"Pinot noir", 2016, "France"},
+        red: {"Pinot noir", 2013, "Italy"}
+      ]
+
+      assert WineCellar.filter(cellar, :red, country: "France") == [
+               {"Merlot", 2015, "France"},
+               {"Pinot noir", 2016, "France"}
+             ]
+    end
+
+    @tag task_id: 4
+    test "filters wines of chosen color by year and country" do
+      cellar = [
+        white: {"Chardonnay", 2015, "Italy"},
+        white: {"Chardonnay", 2014, "France"},
+        rose: {"Dornfelder", 2018, "Germany"},
+        red: {"Merlot", 2015, "France"},
+        white: {"Riesling ", 2017, "Germany"},
+        white: {"Pinot grigio", 2015, "Germany"},
+        red: {"Pinot noir", 2016, "France"},
+        red: {"Pinot noir", 2013, "Italy"}
+      ]
+
+      assert WineCellar.filter(cellar, :white, year: 2015, country: "Germany") == [
+               {"Pinot grigio", 2015, "Germany"}
+             ]
+    end
+
+    @tag task_id: 4
+    test "filters wines of chosen color by country and year" do
+      cellar = [
+        white: {"Chardonnay", 2015, "Italy"},
+        white: {"Chardonnay", 2014, "France"},
+        rose: {"Dornfelder", 2018, "Germany"},
+        red: {"Merlot", 2015, "France"},
+        white: {"Riesling ", 2017, "Germany"},
+        white: {"Pinot grigio", 2015, "Germany"},
+        red: {"Pinot noir", 2016, "France"},
+        red: {"Pinot noir", 2013, "Italy"}
+      ]
+
+      assert WineCellar.filter(cellar, :red, country: "France", year: 2015) == [
+               {"Merlot", 2015, "France"}
+             ]
+    end
+  end
+end