More coverage tests & specs. (#7171)

* Add spec for eval and line coverage.

* Add test for main file coverage.

3 files changed, 10 insertions, 0 deletions

diff --git a/test/coverage/autostart.rb b/test/coverage/autostart.rb
new file mode 100644
index 0000000000..067fe0a40d
--- /dev/null
+++ b/test/coverage/autostart.rb
@@ -0,0 +1,2 @@
+require 'coverage'
+Coverage.start(:all)
diff --git a/test/coverage/main.rb b/test/coverage/main.rb
new file mode 100644
index 0000000000..74f1e95fa3
--- /dev/null
+++ b/test/coverage/main.rb
@@ -0,0 +1 @@
+puts Coverage.peek_result[__FILE__][:lines]
diff --git a/test/coverage/test_coverage.rb b/test/coverage/test_coverage.rb
index 134b41ea6e..6afef8ce1b 100644
--- a/test/coverage/test_coverage.rb
+++ b/test/coverage/test_coverage.rb
@@ -26,6 +26,13 @@ class TestCoverage < Test::Unit::TestCase
     end;
   end
 
+  def test_coverage_in_main_script
+    autostart_path = File.expand_path("autostart.rb", __dir__)
+    main_path = File.expand_path("main.rb", __dir__)
+
+    assert_in_out_err(['-r', autostart_path, main_path], "", ["1"], [])
+  end
+
   def test_coverage_running?
     assert_in_out_err(%w[-rcoverage], <<-"end;", ["false", "true", "true", "false"], [])
       p Coverage.running?