tests: minitest + rack-test suite, bin/test with ephemeral Postgres

test/invoice_test.rb

@@ -0,0 +1,115 @@
+require_relative 'test_helper'
+
+class InvoiceTest < Minitest::Test
+  def setup
+    skip 'TEST_DATABASE_URL not set' unless TestDb.available?
+    TestDb.clean!
+    @year = Date.today.year
+  end
+
+  def insert_number(num)
+    DB.connection[:invoices].insert(
+      uuid: SecureRandom.uuid, number: num, client_name: 'c', client_email: 'c@example.com',
+      currency: 'EUR', gel_rate: 3, subtotal: 1,
+      items: [{ 'description' => 'x', 'qty' => '1', 'unit_price' => '1' }].to_json,
+      issued_on: Date.today, due_on: Date.today + 14, pdf_key: 'k', created_at: Time.now.utc
+    )
+  end
+
+  def test_allocate_number_starts_at_one
+    assert_equal "INV-#{@year}-0001", Invoice.allocate_number
+  end
+
+  def test_allocate_number_increments
+    insert_number("INV-#{@year}-0001")
+    insert_number("INV-#{@year}-0002")
+    assert_equal "INV-#{@year}-0003", Invoice.allocate_number
+  end
+
+  def test_allocate_number_sorts_numerically_past_9999
+    insert_number("INV-#{@year}-9999")
+    insert_number("INV-#{@year}-10000")
+    assert_equal "INV-#{@year}-10001", Invoice.allocate_number
+  end
+
+  def test_allocate_number_ignores_other_years
+    insert_number("INV-#{@year - 1}-0500")
+    assert_equal "INV-#{@year}-0001", Invoice.allocate_number
+  end
+
+  def test_duplicate_number_raises_unique_violation
+    insert_number("INV-#{@year}-0001")
+    assert_raises(Sequel::UniqueConstraintViolation) { insert_number("INV-#{@year}-0001") }
+  end
+
+  def test_build_round_trip
+    inv = Invoice.build(
+      client_name: 'ACME', client_email: 'billing@example.com', client_address: '',
+      currency: 'EUR', gel_rate: '3.05', issued_on: '', due_on: '', notes: '',
+      items: [{ 'description' => 'work', 'qty' => '2', 'unit_price' => '100.50' }]
+    )
+    inv.pdf_key = "invoices/#{inv.number}-#{inv.uuid}.pdf"
+    inv.save_changes
+
+    saved = Invoice[uuid: inv.uuid]
+    assert_equal BigDecimal('201'), saved.total
+    assert_equal BigDecimal('613.05'), saved.total_gel
+    assert_equal 'pending', saved.status
+    refute saved.ltc?
+  end
+
+  def test_build_derives_ltc_amount_from_rate
+    inv = Invoice.build(
+      client_name: 'ACME', client_email: 'billing@example.com',
+      currency: 'EUR', gel_rate: '3.05',
+      items: [{ 'description' => 'work', 'qty' => '1', 'unit_price' => '100' }],
+      ltc_address: 'ltc1qexampleexampleexampleexample', ltc_rate: '80', ltc_amount: ''
+    )
+    assert inv.ltc?
+    assert_equal BigDecimal('1.25'), inv.ltc_amount_due
+  end
+end
+
+class InvoiceValidationTest < Minitest::Test
+  BASE = {
+    client_name: 'ACME', client_email: 'billing@example.com', currency: 'EUR',
+    gel_rate: '3.05', ltc_address: '', ltc_rate: '', ltc_amount: '',
+    items: [{ 'description' => 'work', 'qty' => '1', 'unit_price' => '100' }]
+  }.freeze
+
+  def setup
+    skip 'TEST_DATABASE_URL not set' unless TestDb.available?
+    @app = AsxpioWeb.new!
+  end
+
+  def validate(over = {})
+    @app.send(:validate_invoice_params, BASE.merge(over).dup)
+  end
+
+  def test_valid_params_pass
+    assert_empty validate
+  end
+
+  def test_gel_rate_must_be_positive
+    assert_includes validate(gel_rate: '0'), :gel_rate
+    assert_includes validate(gel_rate: '-2.9'), :gel_rate
+    refute_includes validate(gel_rate: '2.95'), :gel_rate
+  end
+
+  def test_item_numbers_must_parse
+    assert_includes validate(items: [{ 'description' => 'w', 'qty' => '1,5', 'unit_price' => '100' }]), :items
+    assert_includes validate(items: [{ 'description' => 'w', 'qty' => '1', 'unit_price' => 'abc' }]), :items
+  end
+
+  def test_blank_item_numbers_allowed
+    assert_empty validate(items: [{ 'description' => 'w', 'qty' => '', 'unit_price' => '' }])
+  end
+
+  def test_at_least_one_item_required
+    assert_includes validate(items: [{ 'description' => '', 'qty' => '1', 'unit_price' => '1' }]), :items
+  end
+
+  def test_ltc_address_format
+    assert_includes validate(ltc_address: 'not-an-address'), :ltc_address
+  end
+end