From a63d3d05a53bba181f8cabfe526030869ab2afde Mon Sep 17 00:00:00 2001
From: Michael Miller <icy.arctic.fox@gmail.com>
Date: Sun, 17 Nov 2019 10:32:37 -0700
Subject: [PATCH] Negation for receive matchers

---
 src/spectator/matchers/receive_matcher.cr      | 15 +++++++++++++++
 src/spectator/matchers/receive_type_matcher.cr | 15 +++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/src/spectator/matchers/receive_matcher.cr b/src/spectator/matchers/receive_matcher.cr
index bb5fb00..9a96f82 100644
--- a/src/spectator/matchers/receive_matcher.cr
+++ b/src/spectator/matchers/receive_matcher.cr
@@ -28,6 +28,11 @@ module Spectator::Matchers
       "#{actual.label} did not receive #{@expected.label} #{range ? "#{humanize_range(range)} time(s)" : "at least once"} with #{@args || "any arguments"}"
     end
 
+    def failure_message_when_negated(actual) : String
+      range = @range
+      "#{actual.label} received #{@expected.label} #{range ? "#{humanize_range(range)} time(s)" : "at least once"} with #{@args || "any arguments"}"
+    end
+
     def values(actual : TestExpression(T)) forall T
       calls = Harness.current.mocks.calls_for(actual.value, @expected.value)
       calls.select! { |call| @args === call.args } if @args
@@ -38,6 +43,16 @@ module Spectator::Matchers
       }
     end
 
+    def negated_values(actual : TestExpression(T)) forall T
+      calls = Harness.current.mocks.calls_for(actual.value, @expected.value)
+      calls.select! { |call| @args === call.args } if @args
+      range = @range
+      {
+        expected: "#{range ? "Not #{humanize_range(range)} time(s)" : "Never"} with #{@args || "any arguments"}",
+        received: "#{calls.size} time(s)",
+      }
+    end
+
     def with(*args, **opts)
       args = Mocks::GenericArguments.new(args, opts)
       ReceiveMatcher.new(@expected, args, @range)
diff --git a/src/spectator/matchers/receive_type_matcher.cr b/src/spectator/matchers/receive_type_matcher.cr
index f317ea6..c716f05 100644
--- a/src/spectator/matchers/receive_type_matcher.cr
+++ b/src/spectator/matchers/receive_type_matcher.cr
@@ -28,6 +28,11 @@ module Spectator::Matchers
       "#{actual.label} did not receive #{@expected.label} #{range ? "#{humanize_range(range)} time(s)" : "at least once"} with #{@args || "any arguments"}"
     end
 
+    def failure_message_when_negated(actual : TestExpression(T)) : String forall T
+      range = @range
+      "#{actual.label} received #{@expected.label} #{range ? "#{humanize_range(range)} time(s)" : "at least once"} with #{@args || "any arguments"}"
+    end
+
     def values(actual : TestExpression(T)) forall T
       calls = Harness.current.mocks.calls_for_type(T, @expected.value)
       calls.select! { |call| @args === call.args } if @args
@@ -38,6 +43,16 @@ module Spectator::Matchers
       }
     end
 
+    def negated_values(actual : TestExpression(T)) forall T
+      calls = Harness.current.mocks.calls_for_type(T, @expected.value)
+      calls.select! { |call| @args === call.args } if @args
+      range = @range
+      {
+        expected: "#{range ? "Not #{humanize_range(range)} time(s)" : "Never"} with #{@args || "any arguments"}",
+        received: "#{calls.size} time(s)",
+      }
+    end
+
     def with(*args, **opts)
       args = Mocks::GenericArguments.new(args, opts)
       ReceiveTypeMatcher.new(@expected, args, @range)