Reorganize some specs

spec/features/line_number_spec.cr

@@ -0,0 +1,32 @@
+require "../spec_helper"
+
+Spectator.describe Spectator do
+  let(current_example) { ::Spectator::Example.current }
+  subject(location) { current_example.location }
+
+  context "line numbers" do
+    it "contains starting line of spec" do
+      expect(location.line).to eq(__LINE__ - 1)
+    end
+
+    it "contains ending line of spec" do
+      expect(location.end_line).to eq(__LINE__ + 1)
+    end
+
+    it "handles multiple lines and examples" do
+      # Offset is important.
+      expect(location.line).to eq(__LINE__ - 2)
+      # This line fails, refer to https://github.com/crystal-lang/crystal/issues/10562
+      # expect(location.end_line).to eq(__LINE__ + 2)
+      # Offset is still important.
+    end
+  end
+
+  context "file names" do
+    subject { location.file }
+
+    it "match source code" do
+      is_expected.to eq(__FILE__)
+    end
+  end
+end