Suppress unused variable warnings

nobu · nobu · commit 409b0ec4c3c4 · 2019-06-30T11:45:37.000+09:00
diff --git a/test/net/ftp/test_ftp.rb b/test/net/ftp/test_ftp.rb
@@ -530,6 +530,7 @@ def test_list_fail
       sock.print("553 Requested action not taken.\r\n")
       commands.push(sock.gets)
       sock.print("200 Switching to Binary mode.\r\n")
+      [host, port]
     }
     begin
       begin
@@ -711,6 +712,7 @@ def test_retrbinary_fail
       host, port = process_port_or_eprt(sock, line)
       commands.push(sock.gets)
       sock.print("550 Requested action not taken.\r\n")
+      [host, port]
     }
     begin
       begin
@@ -937,6 +939,7 @@ def test_storbinary_fail
       host, port = process_port_or_eprt(sock, line)
       commands.push(sock.gets)
       sock.print("452 Requested file action aborted.\r\n")
+      [host, port]
     }
     begin
       begin
diff --git a/test/objspace/test_objspace.rb b/test/objspace/test_objspace.rb
@@ -106,7 +106,7 @@ def test_count_imemo_objects
   end
 
   def test_memsize_of_iseq
-    iseqw = RubyVM::InstructionSequence.compile('def a; a = :b; end')
+    iseqw = RubyVM::InstructionSequence.compile('def a; a = :b; a; end')
     base_obj_size = ObjectSpace.memsize_of(Object.new)
     assert_operator(ObjectSpace.memsize_of(iseqw), :>, base_obj_size)
   end
diff --git a/test/ruby/test_ast.rb b/test/ruby/test_ast.rb
@@ -205,9 +205,9 @@ def test_of
   end
 
   def test_scope_local_variables
-    node = RubyVM::AbstractSyntaxTree.parse("x = 0")
+    node = RubyVM::AbstractSyntaxTree.parse("_x = 0")
     lv, _, body = *node.children
-    assert_equal([:x], lv)
+    assert_equal([:_x], lv)
     assert_equal(:LASGN, body.type)
   end
 
diff --git a/test/ruby/test_eval.rb b/test/ruby/test_eval.rb
@@ -345,6 +345,7 @@ module EvTest
       # assert_equal(1, eval("foo11"))
       assert_equal(eval("foo22"), eval("foo22", p))
       assert_equal(55, eval("foo22"))
+      assert_equal(55, foo22)
     }.call
   end
 
diff --git a/test/ruby/test_flip.rb b/test/ruby/test_flip.rb
@@ -29,7 +29,7 @@ def test_hidden_key
     assert_nothing_raised(NotImplementedError, bug6899) do
       2000.times {eval %[(foo..bar) ? 1 : 2]}
     end
-    foo = bar
+    [foo, bar]
   end
 
   def test_shared_eval
@@ -38,6 +38,7 @@ def test_shared_eval
     eval("vs.select {|n| if n==2..n==16 then 1 end}")
     v = eval("vs.select {|n| if n==3..n==6 then 1 end}")
     assert_equal([*3..6], v, bug7671)
+    vs
   end
 
   def test_shared_thread
diff --git a/test/ruby/test_gc.rb b/test/ruby/test_gc.rb
@@ -17,6 +17,7 @@ def test_gc
       1.upto(10000) {
         tmp = [0,1,2,3,4,5,6,7,8,9]
       }
+      tmp
     end
     l=nil
     100000.times {
diff --git a/test/ruby/test_gc_compact.rb b/test/ruby/test_gc_compact.rb
@@ -119,6 +119,8 @@ def test_many_collisions
     collisions = GC.stat(:object_id_collisions)
     skip "couldn't get objects to collide" if collisions == 0
     assert_operator collisions, :>, 0
+    ids.clear
+    new_tenants.clear
   end
 
   def test_complex_hash_keys
diff --git a/test/ruby/test_iseq.rb b/test/ruby/test_iseq.rb
@@ -452,7 +452,7 @@ class A
         class B
           2.times {
             def self.foo
-              a = 'good day'
+              _a = 'good day'
               raise
             rescue
               'dear reader'
diff --git a/test/ruby/test_literal.rb b/test/ruby/test_literal.rb
@@ -187,7 +187,7 @@ def test_frozen_string_in_array_literal
   if defined?(RubyVM::InstructionSequence.compile_option) and
     RubyVM::InstructionSequence.compile_option.key?(:debug_frozen_string_literal)
     def test_debug_frozen_string
-      src = 'n = 1; "foo#{n ? "-#{n}" : ""}"'; f = "test.rb"; n = 1
+      src = 'n = 1; _="foo#{n ? "-#{n}" : ""}"'; f = "test.rb"; n = 1
       opt = {frozen_string_literal: true, debug_frozen_string_literal: true}
       str = RubyVM::InstructionSequence.compile(src, f, f, n, opt).eval
       assert_equal("foo-1", str)
diff --git a/test/ruby/test_m17n.rb b/test/ruby/test_m17n.rb
@@ -615,6 +615,8 @@ def test_regexp_embed
     r1 = Regexp.new('\xa1'.force_encoding("ascii-8bit"))
     r2 = eval('/\xa1#{r1}/'.force_encoding('ascii-8bit'))
     assert_equal(Encoding::ASCII_8BIT, r2.encoding)
+
+    [r1, r2]
   end
 
   def test_regexp_named_class
diff --git a/test/ruby/test_optimization.rb b/test/ruby/test_optimization.rb
@@ -751,6 +751,7 @@ def test_side_effect_in_popped_splat
     h = {}
     assert_equal(bug, eval('{ok: 42, **h}; bug'))
     assert_equal(:ok, eval('{ok: bug = :ok, **h}; bug'))
+    assert_empty(h)
   end
 
   def test_overwritten_blockparam
diff --git a/test/ruby/test_parse.rb b/test/ruby/test_parse.rb
@@ -481,6 +481,7 @@ def t.dummy(_)
     t[42, &blk] ||= t.dummy 42 # command_asgn test
     END
     assert_equal([:aref, :aset], a)
+    blk
   end
 
   def test_backquote
@@ -1148,7 +1149,7 @@ def o.i(x)
     end
     o.instance_eval {i (-1.3).abs}
     assert_equal(1.3, o.x)
-    o.instance_eval {i = 0; i (-1.3).abs}
+    o.instance_eval {i = 0; i (-1.3).abs; i}
     assert_equal(1.3, o.x)
   end
 
@@ -1157,6 +1158,7 @@ def test_serial_comparison
       $VERBOSE = true
       x = 1
       eval("if false; 0 < x < 2; end")
+      x
     end
   end
 
diff --git a/test/ruby/test_proc.rb b/test/ruby/test_proc.rb
@@ -1302,7 +1302,7 @@ def get_binding if: 1, case: 2, when: 3, begin: 4, end: 5
   def test_local_variables
     b = get_binding
     assert_equal(%i'if case when begin end a', b.local_variables)
-    a = tap {|;x, y| x = y; break binding.local_variables}
+    a = tap {|;x, y| x = y = x; break binding.local_variables}
     assert_equal(%i[a b x y], a.sort)
   end
 
diff --git a/test/ruby/test_refinement.rb b/test/ruby/test_refinement.rb
@@ -1562,6 +1562,7 @@ def foo
         undef :foo
       end
     end
+    ext
   end
 
   def test_call_refined_method_in_duplicate_module
@@ -2291,6 +2292,7 @@ def foo;end
       end
     end
     assert_equal("[C[A[B]]]", c.new.foo, '[ruby-dev:50390] [Bug #14232]')
+    d
   end
 
   private
diff --git a/test/socket/test_socket.rb b/test/socket/test_socket.rb
@@ -736,6 +736,7 @@ def test_udp_recvmsg_truncation
     ret, addr, rflags = s1.recvmsg(10, 0)
     assert_equal "b" * 10, ret
     assert_equal Socket::MSG_TRUNC, rflags & Socket::MSG_TRUNC if !rflags.nil?
+    addr
   ensure
     s1.close
     s2.close
diff --git a/test/test_open3.rb b/test/test_open3.rb
@@ -320,5 +320,6 @@ def test_integer_and_symbol_key
     command = [RUBY, '-e', 'puts "test_integer_and_symbol_key"']
     out, status = Open3.capture2(*command, :chdir => '.', 2 => IO::NULL)
     assert_equal("test_integer_and_symbol_key\n", out)
+    assert_predicate(status, :success?)
   end
 end

Original file line number	Diff line number	Diff line change
`@@ -17,6 +17,7 @@ def test_gc`
`17`	`17`	`1.upto(10000) {`
`18`	`18`	`tmp = [0,1,2,3,4,5,6,7,8,9]`
`19`	`19`	`}`
	`20`	`+ tmp`
`20`	`21`	`end`
`21`	`22`	`l=nil`
`22`	`23`	`100000.times {`