From d86b9dad11ad09bbf7d60968e19f43713550d22f Mon Sep 17 00:00:00 2001
From: Michael Miller <icy.arctic.fox@gmail.com>
Date: Wed, 23 Jan 2019 21:02:44 -0700
Subject: [PATCH] Add spec for InequalityMatcher

---
 spec/matchers/inequality_matcher_spec.cr | 134 +++++++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100644 spec/matchers/inequality_matcher_spec.cr

diff --git a/spec/matchers/inequality_matcher_spec.cr b/spec/matchers/inequality_matcher_spec.cr
new file mode 100644
index 0000000..466ed05
--- /dev/null
+++ b/spec/matchers/inequality_matcher_spec.cr
@@ -0,0 +1,134 @@
+require "../spec_helper"
+
+describe Spectator::Matchers::InequalityMatcher do
+  describe "#match?" do
+    it "compares using #!=" do
+      spy = SpySUT.new
+      partial = Spectator::Expectations::ValueExpectationPartial.new(spy)
+      matcher = Spectator::Matchers::InequalityMatcher.new(42)
+      matcher.match?(partial).should be_true
+      spy.ne_call_count.should be > 0
+    end
+
+    context "with identical values" do
+      it "is false" do
+        value = 42
+        partial = Spectator::Expectations::ValueExpectationPartial.new(value)
+        matcher = Spectator::Matchers::InequalityMatcher.new(value)
+        matcher.match?(partial).should be_false
+      end
+    end
+
+    context "with different values" do
+      it "is true" do
+        value1 = 42
+        value2 = 777
+        partial = Spectator::Expectations::ValueExpectationPartial.new(value1)
+        matcher = Spectator::Matchers::InequalityMatcher.new(value2)
+        matcher.match?(partial).should be_true
+      end
+    end
+
+    context "with the same instance" do
+      it "is false" do
+        # Box is used because it is a reference type and doesn't override the == method.
+        ref = Box.new([] of Int32)
+        partial = Spectator::Expectations::ValueExpectationPartial.new(ref)
+        matcher = Spectator::Matchers::InequalityMatcher.new(ref)
+        matcher.match?(partial).should be_false
+      end
+    end
+
+    context "with different instances" do
+      context "with same contents" do
+        it "is false" do
+          array1 = [1, 2, 3]
+          array2 = [1, 2, 3]
+          partial = Spectator::Expectations::ValueExpectationPartial.new(array1)
+          matcher = Spectator::Matchers::InequalityMatcher.new(array2)
+          matcher.match?(partial).should be_false
+        end
+      end
+
+      context "with different contents" do
+        it "is true" do
+          array1 = [1, 2, 3]
+          array2 = [4, 5, 6]
+          partial = Spectator::Expectations::ValueExpectationPartial.new(array1)
+          matcher = Spectator::Matchers::InequalityMatcher.new(array2)
+          matcher.match?(partial).should be_true
+        end
+      end
+    end
+  end
+
+  describe "#message" do
+    it "mentions !=" do
+      value = 42
+      partial = Spectator::Expectations::ValueExpectationPartial.new(value)
+      matcher = Spectator::Matchers::InequalityMatcher.new(value)
+      matcher.message(partial).should contain("!=")
+    end
+
+    it "contains the actual label" do
+      value = 42
+      label = "everything"
+      partial = Spectator::Expectations::ValueExpectationPartial.new(label, value)
+      matcher = Spectator::Matchers::InequalityMatcher.new(value)
+      matcher.message(partial).should contain(label)
+    end
+
+    it "contains the expected label" do
+      value = 42
+      label = "everything"
+      partial = Spectator::Expectations::ValueExpectationPartial.new(value)
+      matcher = Spectator::Matchers::InequalityMatcher.new(label, value)
+      matcher.message(partial).should contain(label)
+    end
+
+    context "when expected label is omitted" do
+      it "contains stringified form of expected value" do
+        value1 = 42
+        value2 = 777
+        partial = Spectator::Expectations::ValueExpectationPartial.new(value1)
+        matcher = Spectator::Matchers::InequalityMatcher.new(value2)
+        matcher.message(partial).should contain(value2.to_s)
+      end
+    end
+  end
+
+  describe "#negated_message" do
+    it "mentions !=" do
+      value = 42
+      partial = Spectator::Expectations::ValueExpectationPartial.new(value)
+      matcher = Spectator::Matchers::InequalityMatcher.new(value)
+      matcher.negated_message(partial).should contain("!=")
+    end
+
+    it "contains the actual label" do
+      value = 42
+      label = "everything"
+      partial = Spectator::Expectations::ValueExpectationPartial.new(label, value)
+      matcher = Spectator::Matchers::InequalityMatcher.new(value)
+      matcher.negated_message(partial).should contain(label)
+    end
+
+    it "contains the expected label" do
+      value = 42
+      label = "everything"
+      partial = Spectator::Expectations::ValueExpectationPartial.new(value)
+      matcher = Spectator::Matchers::InequalityMatcher.new(label, value)
+      matcher.negated_message(partial).should contain(label)
+    end
+
+    context "when expected label is omitted" do
+      it "contains stringified form of expected value" do
+        value1 = 42
+        value2 = 777
+        partial = Spectator::Expectations::ValueExpectationPartial.new(value1)
+        matcher = Spectator::Matchers::InequalityMatcher.new(value2)
+        matcher.negated_message(partial).should contain(value2.to_s)
+      end
+    end
+  end
+end