Add some tests

test/cast_bool_value_test.rb

@@ -0,0 +1,31 @@
+require 'test_helper'
+require 'sensu-plugin/utils'
+
+class TestCastBoolInt < MiniTest::Test
+  include SensuPluginTestHelper
+  include Sensu::Plugin::Utils
+
+  def test_integer
+    assert_equal 567.89, cast_bool_values_int(567.89)
+  end
+
+  def test_false_boolean
+    assert_equal 0, cast_bool_values_int(false)
+  end
+
+  def test_true_boolean
+    assert_equal 1, cast_bool_values_int(true)
+  end
+
+  def test_false_string
+    assert_equal 0, cast_bool_values_int('false')
+  end
+
+  def test_true_string
+    assert_equal 1, cast_bool_values_int('true')
+  end
+
+  def test_arbirtrary_string
+    assert_equal 'foo', cast_bool_values_int('foo')
+  end
+end