Add some model tests (#9)

Reviewed-on: #9

test/models/credit_card_bill_test.rb

@@ -1,7 +1,9 @@
 require "test_helper"
 
 class CreditCardBillTest < ActiveSupport::TestCase
-  # test "the truth" do
-  #   assert true
-  # end
+  def test_unpaid
+    credit_card_bill = credit_card_bills(:one)
+
+    assert_equal 870.00, credit_card_bill.unpaid
+  end
 end

test/models/expense_test.rb

@@ -1,7 +1,39 @@
 require "test_helper"
 
 class ExpenseTest < ActiveSupport::TestCase
-  # test "the truth" do
-  #   assert true
-  # end
+  def test_monthly_converts_period_for_monthly
+    expense = expenses(:monthly_expense)
+
+    assert_equal 120.00, expense.monthly
+  end
+
+  def test_monthly_converts_period_for_annually
+    expense = expenses(:annual_expense)
+
+    assert_equal 10.00, expense.monthly
+  end
+
+  def test_monthly_converts_period_for_weekly
+    expense = expenses(:weekly_expense)
+
+    assert_equal 520.00, expense.monthly
+  end
+
+  def test_monthly_converts_period_for_quarterly
+    expense = expenses(:quarterly_expense)
+
+    assert_equal 40.00, expense.monthly
+  end
+
+  def test_total_calculates_total_of_expenses
+    assert_equal 480.00, Expense.total
+  end
+
+  def test_total_calculates_monthly_total
+    assert_equal 690.00, Expense.monthly_total
+  end
+
+  def test_total_calculates_credit_card_monthly_total
+    assert_equal 130.00, Expense.credit_card_monthly_total
+  end
 end

test/models/income_test.rb

@@ -1,7 +1,7 @@
 require "test_helper"
 
 class IncomeTest < ActiveSupport::TestCase
-  # test "the truth" do
-  #   assert true
-  # end
+  def test_total
+    assert_equal 110_000.00, Income.total
+  end
 end

test/models/member_test.rb

@@ -1,7 +1,27 @@
 require "test_helper"
 
 class MemberTest < ActiveSupport::TestCase
-  # test "the truth" do
-  #   assert true
-  # end
+  def member
+    members(:one)
+  end
+
+  def test_income
+    assert_equal 110_000.00, member.income
+  end
+
+  def test_included_income
+    assert_equal 100_000.00, member.included_income
+  end
+
+  def test_others_included_income
+    assert_equal 10_000.00, member.others_included_income
+  end
+
+  def test_burden_percent
+    assert_equal 0.91, member.burden_percent
+  end
+
+  def test_burden_amount
+    assert_equal 627.90, member.burden_amount
+  end
 end