diff --git a/spec/matchers/truthy_matcher_spec.cr b/spec/matchers/truthy_matcher_spec.cr
new file mode 100644
index 0000000..edfc882
--- /dev/null
+++ b/spec/matchers/truthy_matcher_spec.cr
@@ -0,0 +1,137 @@
+require "../spec_helper"
+
+describe Spectator::Matchers::TruthyMatcher do
+  context "truthy" do
+    describe "#match?" do
+      context "with a truthy value" do
+        it "is true" do
+          value = 42
+          partial = Spectator::Expectations::ValueExpectationPartial.new(value)
+          matcher = Spectator::Matchers::TruthyMatcher.new(true)
+          matcher.match?(partial).should be_true
+        end
+      end
+
+      context "with false" do
+        it "is false" do
+          value = false
+          partial = Spectator::Expectations::ValueExpectationPartial.new(value)
+          matcher = Spectator::Matchers::TruthyMatcher.new(true)
+          matcher.match?(partial).should be_false
+        end
+      end
+
+      context "with nil" do
+        it "is false" do
+          value = nil
+          partial = Spectator::Expectations::ValueExpectationPartial.new(value)
+          matcher = Spectator::Matchers::TruthyMatcher.new(true)
+          matcher.match?(partial).should be_false
+        end
+      end
+    end
+
+    describe "#message" do
+      it "contains the actual label" do
+        value = 42
+        label = "everything"
+        partial = Spectator::Expectations::ValueExpectationPartial.new(label, value)
+        matcher = Spectator::Matchers::TruthyMatcher.new(true)
+        matcher.message(partial).should contain(label)
+      end
+
+      it "contains the \"truthy\"" do
+        value = 42
+        label = "everything"
+        partial = Spectator::Expectations::ValueExpectationPartial.new(value)
+        matcher = Spectator::Matchers::TruthyMatcher.new(true)
+        matcher.message(partial).should contain("truthy")
+      end
+    end
+
+    describe "#negated_message" do
+      it "contains the actual label" do
+        value = 42
+        label = "everything"
+        partial = Spectator::Expectations::ValueExpectationPartial.new(label, value)
+        matcher = Spectator::Matchers::TruthyMatcher.new(true)
+        matcher.negated_message(partial).should contain(label)
+      end
+
+      it "contains the \"truthy\"" do
+        value = 42
+        label = "everything"
+        partial = Spectator::Expectations::ValueExpectationPartial.new(value)
+        matcher = Spectator::Matchers::TruthyMatcher.new(true)
+        matcher.negated_message(partial).should contain("truthy")
+      end
+    end
+  end
+
+  context "falsey" do
+    describe "#match?" do
+      context "with a truthy value" do
+        it "is false" do
+          value = 42
+          partial = Spectator::Expectations::ValueExpectationPartial.new(value)
+          matcher = Spectator::Matchers::TruthyMatcher.new(false)
+          matcher.match?(partial).should be_false
+        end
+      end
+
+      context "with false" do
+        it "is true" do
+          value = false
+          partial = Spectator::Expectations::ValueExpectationPartial.new(value)
+          matcher = Spectator::Matchers::TruthyMatcher.new(false)
+          matcher.match?(partial).should be_true
+        end
+      end
+
+      context "with nil" do
+        it "is true" do
+          value = nil
+          partial = Spectator::Expectations::ValueExpectationPartial.new(value)
+          matcher = Spectator::Matchers::TruthyMatcher.new(false)
+          matcher.match?(partial).should be_true
+        end
+      end
+    end
+
+    describe "#message" do
+      it "contains the actual label" do
+        value = 42
+        label = "everything"
+        partial = Spectator::Expectations::ValueExpectationPartial.new(label, value)
+        matcher = Spectator::Matchers::TruthyMatcher.new(false)
+        matcher.message(partial).should contain(label)
+      end
+
+      it "contains the \"falsey\"" do
+        value = 42
+        label = "everything"
+        partial = Spectator::Expectations::ValueExpectationPartial.new(value)
+        matcher = Spectator::Matchers::TruthyMatcher.new(false)
+        matcher.message(partial).should contain("falsey")
+      end
+    end
+
+    describe "#negated_message" do
+      it "contains the actual label" do
+        value = 42
+        label = "everything"
+        partial = Spectator::Expectations::ValueExpectationPartial.new(label, value)
+        matcher = Spectator::Matchers::TruthyMatcher.new(false)
+        matcher.negated_message(partial).should contain(label)
+      end
+
+      it "contains the \"falsey\"" do
+        value = 42
+        label = "everything"
+        partial = Spectator::Expectations::ValueExpectationPartial.new(value)
+        matcher = Spectator::Matchers::TruthyMatcher.new(false)
+        matcher.negated_message(partial).should contain("falsey")
+      end
+    end
+  end
+end