Merge pull request #4407 from...

Merge pull request #4407 from shuujii/add-assert_raise_with_message-and-assert_raise_with_message_pattern

Add `assert_raise_with_message` and `assert_raise_with_message_pattern`

test/assert.rb

@@ -7,13 +7,17 @@ $skip_test = 0
 $asserts  = []
 $test_start = Time.now if Object.const_defined?(:Time)
 
+# For bintest on Ruby
 unless RUBY_ENGINE == "mruby"
-  # For bintest on Ruby
   def t_print(*args)
     print(*args)
     $stdout.flush
     nil
   end
+
+  def _str_match?(pattern, str)
+    File.fnmatch?(pattern, str, File::FNM_EXTGLOB|File::FNM_DOTMATCH)
+  end
 end
 
 class Array
@@ -256,10 +260,7 @@ end
 def assert_match(*args); _assert_match(true, *args) end
 def assert_not_match(*args); _assert_match(false, *args) end
 def _assert_match(affirmed, pattern, str, msg = nil)
-  receiver, *args = RUBY_ENGINE == "mruby" ?
-    [self, :_str_match?, pattern, str] :
-    [File, :fnmatch?, pattern, str, File::FNM_EXTGLOB|File::FNM_DOTMATCH]
-  unless ret = !receiver.__send__(*args) == !affirmed
+  unless ret = _str_match?(pattern, str) == affirmed
     diff = "    Expected #{pattern.inspect} to #{'not ' unless affirmed}match #{str.inspect}."
   end
   assert_true(ret, msg, diff)
@@ -293,8 +294,9 @@ def assert_raise(*exc)
   exc = exc.empty? ? StandardError : exc.size == 1 ? exc[0] : exc
   begin
     yield
-  rescue *exc
+  rescue *exc => e
     pass
+    e
   rescue Exception => e
     diff = "    #{exc} exception expected, not\n" \
            "    Class: <#{e.class}>\n" \
@@ -319,6 +321,28 @@ def assert_nothing_raised(msg = nil)
   end
 end
 
+def assert_raise_with_message(*args, &block)
+  _assert_raise_with_message(:plain, *args, &block)
+end
+def assert_raise_with_message_pattern(*args, &block)
+  _assert_raise_with_message(:pattern, *args, &block)
+end
+def _assert_raise_with_message(type, exc, exp_msg, msg = nil, &block)
+  e = msg ? assert_raise(exc, msg, &block) : assert_raise(exc, &block)
+  e ? ($mrbtest_assert_idx -= 1) : (return e)
+
+  err_msg = e.message
+  unless ret = type == :pattern ? _str_match?(exp_msg, err_msg) : exp_msg == err_msg
+    diff = "    Expected Exception(#{exc}) was raised, but the message doesn't match.\n"
+    if type == :pattern
+      diff += "    Expected #{exp_msg.inspect} to match #{err_msg.inspect}."
+    else
+      diff += assertion_diff(exp_msg, err_msg)
+    end
+  end
+  assert_true(ret, msg, diff)
+end
+
 def pass
   assert_true(true)
 end

test/t/kernel.rb

@@ -355,17 +355,15 @@ assert('Kernel#method_missing', '15.3.1.3.30') do
     end
   end
   no_super_test = NoSuperMethodTestClass.new
-  begin
+  msg = "undefined method 'no_super_method_named_this'"
+  assert_raise_with_message(NoMethodError, msg) do
     no_super_test.no_super_method_named_this
-  rescue NoMethodError => e
-    assert_equal "undefined method 'no_super_method_named_this'", e.message
   end
 
   a = String.new
-  begin
+  msg = "undefined method 'no_method_named_this'"
+  assert_raise_with_message(NoMethodError, msg) do
     a.no_method_named_this
-  rescue NoMethodError => e
-    assert_equal "undefined method 'no_method_named_this'", e.message
   end
 end
 

test/t/module.rb

@@ -21,6 +21,14 @@ def labeled_class(name, supklass = Object, &block)
   end
 end
 
+def assert_uninitialized_const(&block)
+  assert_raise_with_message_pattern(NameError, "uninitialized constant *", &block)
+end
+
+def assert_wrong_const_name(&block)
+  assert_raise_with_message_pattern(NameError, "wrong constant name *", &block)
+end
+
 assert('Module', '15.2.2') do
   assert_equal Class, Module.class
 end
@@ -222,7 +230,7 @@ assert('Module#const_defined?', '15.2.2.4.20') do
 
   assert_true Test4ConstDefined.const_defined?(:Const4Test4ConstDefined)
   assert_false Test4ConstDefined.const_defined?(:NotExisting)
-  assert_raise(NameError){ Test4ConstDefined.const_defined?(:wrong_name) }
+  assert_wrong_const_name{ Test4ConstDefined.const_defined?(:wrong_name) }
 end
 
 assert('Module#const_get', '15.2.2.4.21') do
@@ -235,9 +243,9 @@ assert('Module#const_get', '15.2.2.4.21') do
   assert_equal 42, Object.const_get("Test4ConstGet::Const4Test4ConstGet")
 
   assert_raise(TypeError){ Test4ConstGet.const_get(123) }
-  assert_raise(NameError){ Test4ConstGet.const_get(:I_DO_NOT_EXIST) }
-  assert_raise(NameError){ Test4ConstGet.const_get("I_DO_NOT_EXIST::ME_NEITHER") }
-  assert_raise(NameError){ Test4ConstGet.const_get(:wrong_name) }
+  assert_uninitialized_const{ Test4ConstGet.const_get(:I_DO_NOT_EXIST) }
+  assert_uninitialized_const{ Test4ConstGet.const_get("I_DO_NOT_EXIST::ME_NEITHER") }
+  assert_wrong_const_name{ Test4ConstGet.const_get(:wrong_name) }
 end
 
 assert('Module#const_set', '15.2.2.4.23') do
@@ -248,7 +256,7 @@ assert('Module#const_set', '15.2.2.4.23') do
   assert_equal 23, Test4ConstSet.const_set(:Const4Test4ConstSet, 23)
   assert_equal 23, Test4ConstSet.const_get(:Const4Test4ConstSet)
   ["", "wrongNAME", "Wrong-Name"].each do |n|
-    assert_raise(NameError) { Test4ConstSet.const_set(n, 1) }
+    assert_wrong_const_name { Test4ConstSet.const_set(n, 1) }
   end
 end
 
@@ -259,9 +267,11 @@ assert('Module#remove_const', '15.2.2.4.40') do
 
   assert_equal 23, Test4RemoveConst.remove_const(:ExistingConst)
   assert_false Test4RemoveConst.const_defined?(:ExistingConst)
-  assert_raise(NameError) { Test4RemoveConst.remove_const(:NonExistingConst) }
+  assert_raise_with_message_pattern(NameError, "constant * not defined") do
+    Test4RemoveConst.remove_const(:NonExistingConst)
+  end
   %i[x X!].each do |n|
-    assert_raise(NameError) { Test4RemoveConst.remove_const(n) }
+    assert_wrong_const_name { Test4RemoveConst.remove_const(n) }
   end
   assert_raise(FrozenError) { Test4RemoveConst.freeze.remove_const(:A) }
 end