Implement aggregate_failures

spec/spectator/aggregate_failures_spec.cr

@@ -0,0 +1,32 @@
+require "../spec_helper"
+
+Spectator.describe Spectator do
+  describe "aggregate_failures" do
+    it "captures multiple failed expectations" do
+      expect do
+        aggregate_failures do
+          expect(true).to be_false
+          expect(false).to be_true
+        end
+      end.to raise_error(Spectator::MultipleExpectationsFailed, /2 failures/)
+    end
+
+    it "raises normally for one failed expectation" do
+      expect do
+        aggregate_failures do
+          expect(true).to be_false
+          expect(true).to be_true
+        end
+      end.to raise_error(Spectator::ExpectationFailed)
+    end
+
+    it "doesn't raise when there are no failed expectations" do
+      expect do
+        aggregate_failures do
+          expect(false).to be_false
+          expect(true).to be_true
+        end
+      end.to_not raise_error(Spectator::ExpectationFailed)
+    end
+  end
+end