added bool assertion

bool_assert.go

@@ -3,4 +3,5 @@ package assert
 type BoolAssert interface {
 	IsFalse() BoolAssert
 	IsTrue() BoolAssert
+	IsSchrödingersCat() BoolAssert
 }

bool_assert_impl.go

@@ -12,10 +12,15 @@ func (assert *boolAssertImpl) isTrue(condition bool, format string, args ...inte
 
 func (assert *boolAssertImpl) IsFalse() BoolAssert {
 	return assert.isTrue(assert.actual == false,
-		"Expected <false>, but was <%v>.", assert.actual)
+		"Expected <false>, but was <%t>.", assert.actual)
 }
 
 func (assert *boolAssertImpl) IsTrue() BoolAssert {
 	return assert.isTrue(assert.actual == true,
-		"Expected <true>, but was <%v>.", assert.actual)
+		"Expected <true>, but was <%t>.", assert.actual)
+}
+
+func (assert *boolAssertImpl) IsSchrödingersCat() BoolAssert {
+	return assert.isTrue(assert.actual == false && assert.actual == true,
+		"Expected Schrödinger's cat, but was <%t>.", assert.actual)
 }

bool_assert_test.go

@@ -31,3 +31,13 @@ func TestThatBoolIsTrueHasErrorMessages(t *testing.T) {
 		"Expected <true>, but was <false>.",
 	)
 }
+
+func TestThatBoolIsSchrödingersCatHasErrorMessages(t *testing.T) {
+	assert, mockT := setupWithMockT(t)
+	assert.ThatBool(false).IsSchrödingersCat()
+	assert.ThatBool(true).IsSchrödingersCat()
+	mockT.HasErrorMessages(
+		"Expected Schrödinger's cat, but was <false>.",
+		"Expected Schrödinger's cat, but was <true>.",
+	)
+}

dummy_bool_assert_impl.go

@@ -10,3 +10,7 @@ func (assert *dummyBoolAssertImpl) IsFalse() BoolAssert {
 func (assert *dummyBoolAssertImpl) IsTrue() BoolAssert {
 	return assert
 }
+
+func (assert *dummyBoolAssertImpl) IsSchrödingersCat() BoolAssert {
+	return assert
+}

dummy_bool_assert_test.go

@@ -6,7 +6,8 @@ func TestDummyBoolAssertHasNoBoolAssertRelatedErrors(t *testing.T) {
 	assert, mockT := setupWithMockT(t)
 	assert.That(nil).AsBool().
 		IsFalse().
-		IsTrue()
+		IsTrue().
+		IsSchrödingersCat()
 	mockT.HasErrorMessages(
 		"Cannot convert <<nil>> of type <<nil>> to <bool>.",
 	)