From 37a4d0dbeb9a92b959edfb9b1aceba4eaacf9f78 Mon Sep 17 00:00:00 2001
From: Alex Panov <thealexpanov@gmail.com>
Date: Sun, 15 May 2016 23:36:18 -0400
Subject: [PATCH] Add boolean matchers

---
 README.rst                                         |  5 ++++
 src/hamcrest/library/__init__.py                   |  3 ++
 src/hamcrest/library/bool/__init__.py              |  1 +
 src/hamcrest/library/bool/bool_comparison.py       | 22 ++++++++++++++
 tests/hamcrest_unit_test/bool/__init__.py          |  0
 .../bool/bool_comparison_test.py                   | 34 ++++++++++++++++++++++
 6 files changed, 65 insertions(+)
 create mode 100644 src/hamcrest/library/bool/__init__.py
 create mode 100644 src/hamcrest/library/bool/bool_comparison.py
 create mode 100644 tests/hamcrest_unit_test/bool/__init__.py
 create mode 100644 tests/hamcrest_unit_test/bool/bool_comparison_test.py

diff --git a/README.rst b/README.rst
index 8ef46bb..d2200f8 100644
--- a/README.rst
+++ b/README.rst
@@ -148,6 +148,11 @@ PyHamcrest comes with a library of useful matchers:
   * ``greater_than``, ``greater_than_or_equal_to``, ``less_than``,
     ``less_than_or_equal_to`` - match numeric ordering
 
+* Boolean
+
+  * ``is_true`` - verify the value is True
+  * ``is_false`` - verify the value is False
+
 * Text
 
   * ``contains_string`` - match part of a string
diff --git a/src/hamcrest/library/__init__.py b/src/hamcrest/library/__init__.py
index a5a7963..55dfcda 100644
--- a/src/hamcrest/library/__init__.py
+++ b/src/hamcrest/library/__init__.py
@@ -7,6 +7,7 @@ from hamcrest.library.integration import *
 from hamcrest.library.number import *
 from hamcrest.library.object import *
 from hamcrest.library.text import *
+from hamcrest.library.bool import *
 
 __author__ = "Jon Reid"
 __copyright__ = "Copyright 2011 hamcrest.org"
@@ -41,4 +42,6 @@ __all__ = [
     'ends_with',
     'starts_with',
     'string_contains_in_order',
+    'is_true',
+    'is_false'
 ]
diff --git a/src/hamcrest/library/bool/__init__.py b/src/hamcrest/library/bool/__init__.py
new file mode 100644
index 0000000..7cf13a3
--- /dev/null
+++ b/src/hamcrest/library/bool/__init__.py
@@ -0,0 +1 @@
+from .bool_comparison import is_true, is_false
diff --git a/src/hamcrest/library/bool/bool_comparison.py b/src/hamcrest/library/bool/bool_comparison.py
new file mode 100644
index 0000000..af7e1b6
--- /dev/null
+++ b/src/hamcrest/library/bool/bool_comparison.py
@@ -0,0 +1,22 @@
+from hamcrest.core.base_matcher import BaseMatcher
+
+
+class IsABool(BaseMatcher):
+    def __init__(self, boolean_value):
+        self.boolean_value = boolean_value
+
+    def describe_to(self, description):
+        description.append_text(str(self.boolean_value))
+
+    def _matches(self, item):
+        if not isinstance(item, bool):
+            return False
+        return item == self.boolean_value
+
+
+def is_true():
+    return IsABool(True)
+
+
+def is_false():
+    return IsABool(False)
diff --git a/tests/hamcrest_unit_test/bool/__init__.py b/tests/hamcrest_unit_test/bool/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/hamcrest_unit_test/bool/bool_comparison_test.py b/tests/hamcrest_unit_test/bool/bool_comparison_test.py
new file mode 100644
index 0000000..e865365
--- /dev/null
+++ b/tests/hamcrest_unit_test/bool/bool_comparison_test.py
@@ -0,0 +1,34 @@
+from hamcrest import assert_that, equal_to
+from hamcrest.core.string_description import StringDescription
+from hamcrest.library.bool import is_false, is_true
+from hamcrest_unit_test.matcher_test import MatcherTest
+
+
+class BoolComparisonTest(MatcherTest):
+    def test_true_is_true(self):
+        self.assert_matches('Is True', is_true(), True)
+
+    def test_false_is_not_true(self):
+        self.assert_does_not_match('False', is_true(), False)
+
+    def test_false_is_false(self):
+        self.assert_matches('False', is_false(), False)
+
+    def test_true_is_not_false(self):
+        self.assert_does_not_match('True', is_false(), True)
+
+    def test_number_is_not_true(self):
+        self.assert_does_not_match('True', is_true(), 1)
+
+    def test_number_is_not_false(self):
+        self.assert_does_not_match('False', is_false(), 1)
+
+    def test_is_true_description(self):
+        description = StringDescription()
+        is_true().describe_to(description)
+        assert_that(str(description), equal_to('True'))
+
+    def test_is_false_description(self):
+        description = StringDescription()
+        is_false().describe_to(description)
+        assert_that(str(description), equal_to('False'))
-- 
2.9.3