1 files changed, 81 insertions, 0 deletions
diff --git a/test/coverage/test_coverage.rb b/test/coverage/test_coverage.rb
index 9db1f8f253..adcd4a946c 100644
--- a/test/coverage/test_coverage.rb
+++ b/test/coverage/test_coverage.rb
@@ -82,6 +82,70 @@ class TestCoverage < Test::Unit::TestCase
     }
   end
 
+  def test_coverage_snapshot_iseq_compile
+    Dir.mktmpdir {|tmp|
+      Dir.chdir(tmp) {
+        File.open("test.rb", "w") do |f|
+          f.puts <<-EOS
+            def coverage_test_snapshot
+              :ok
+            end
+          EOS
+        end
+
+        assert_in_out_err(ARGV, <<-"end;", ["[1, 0, nil]", "[1, 1, nil]", "[1, 1, nil]"], [])
+          class RubyVM::InstructionSequence
+            def self.load_iseq(path)
+              compile(File.read(path), path, path)
+            end
+          end
+
+          Coverage.start
+          tmp = Dir.pwd
+          require tmp + "/test.rb"
+          cov = Coverage.peek_result[tmp + "/test.rb"]
+          coverage_test_snapshot
+          cov2 = Coverage.peek_result[tmp + "/test.rb"]
+          p cov
+          p cov2
+          p Coverage.result[tmp + "/test.rb"]
+        end;
+      }
+    }
+  end
+
+  def test_coverage_snapshot_iseq_compile_file
+    Dir.mktmpdir {|tmp|
+      Dir.chdir(tmp) {
+        File.open("test.rb", "w") do |f|
+          f.puts <<-EOS
+            def coverage_test_snapshot
+              :ok
+            end
+          EOS
+        end
+
+        assert_in_out_err(ARGV, <<-"end;", ["[1, 0, nil]", "[1, 1, nil]", "[1, 1, nil]"], [])
+          class RubyVM::InstructionSequence
+            def self.load_iseq(path)
+              compile_file(path)
+            end
+          end
+
+          Coverage.start
+          tmp = Dir.pwd
+          require tmp + "/test.rb"
+          cov = Coverage.peek_result[tmp + "/test.rb"]
+          coverage_test_snapshot
+          cov2 = Coverage.peek_result[tmp + "/test.rb"]
+          p cov
+          p cov2
+          p Coverage.result[tmp + "/test.rb"]
+        end;
+      }
+    }
+  end
+
   def test_restarting_coverage
     Dir.mktmpdir {|tmp|
       Dir.chdir(tmp) {
@@ -192,6 +256,23 @@ class TestCoverage < Test::Unit::TestCase
     end;
   end
 
+  def test_eval_negative_lineno
+    assert_in_out_err(ARGV, <<-"end;", ["[1, 1, 1]"], [])
+      Coverage.start(eval: true, lines: true)
+
+      eval(<<-RUBY, TOPLEVEL_BINDING, "test.rb", -2)
+      p # -2 # Not subject to measurement
+      p # -1 # Not subject to measurement
+      p #  0 # Not subject to measurement
+      p #  1 # Subject to measurement
+      p #  2 # Subject to measurement
+      p #  3 # Subject to measurement
+      RUBY
+
+      p Coverage.result["test.rb"][:lines]
+    end;
+  end
+
   def test_coverage_supported
     assert Coverage.supported?(:lines)
     assert Coverage.supported?(:oneshot_lines)