7 files changed, 19 insertions, 10 deletions
diff --git a/actionview/test/actionpack/controller/render_test.rb b/actionview/test/actionpack/controller/render_test.rb
index fe4cf3688a..fb826af044 100644
--- a/actionview/test/actionpack/controller/render_test.rb
+++ b/actionview/test/actionpack/controller/render_test.rb
@@ -861,12 +861,12 @@ class RenderTest < ActionController::TestCase
 
   # :ported:
   def test_attempt_to_access_object_method
-    assert_raise(AbstractController::ActionNotFound, "No action responded to [clone]") { get :clone }
+    assert_raise(AbstractController::ActionNotFound) { get :clone }
   end
 
   # :ported:
   def test_private_methods
-    assert_raise(AbstractController::ActionNotFound, "No action responded to [determine_layout]") { get :determine_layout }
+    assert_raise(AbstractController::ActionNotFound) { get :determine_layout }
   end
 
   # :ported:
diff --git a/actionview/test/template/render_test.rb b/actionview/test/template/render_test.rb
index f77b81f0ee..94af1dc3ad 100644
--- a/actionview/test/template/render_test.rb
+++ b/actionview/test/template/render_test.rb
@@ -61,9 +61,10 @@ module RenderTestCases
 
   def test_render_template_with_a_missing_partial_of_another_format
     @view.lookup_context.formats = [:html]
-    assert_raise ActionView::Template::Error, "Missing partial /_missing with {:locale=>[:en], :formats=>[:json], :handlers=>[:erb, :builder]}" do
+    e = assert_raise ActionView::Template::Error do
       @view.render(:template => "with_format", :formats => [:json])
     end
+    assert_includes(e.message, "Missing partial /_missing with {:locale=>[:en], :formats=>[:json], :variants=>[], :handlers=>[:raw, :erb, :builder, :ruby]}.")
   end
 
   def test_render_file_with_locale
diff --git a/actionview/test/template/template_test.rb b/actionview/test/template/template_test.rb
index c94508d678..aae6a9aa09 100644
--- a/actionview/test/template/template_test.rb
+++ b/actionview/test/template/template_test.rb
@@ -183,10 +183,11 @@ class TestERBTemplate < ActiveSupport::TestCase
   end
 
   def test_error_when_template_isnt_valid_utf8
-    assert_raises(ActionView::Template::Error, /\xFC/) do
+    e = assert_raises ActionView::Template::Error do
       @template = new_template("hello \xFCmlat", :virtual_path => nil)
       render
     end
+    assert_match(/\xFC/, e.message)
   end
 
   def with_external_encoding(encoding)
diff --git a/actionview/test/template/test_case_test.rb b/actionview/test/template/test_case_test.rb
index 5ad1938b61..c6cc47fb4f 100644
--- a/actionview/test/template/test_case_test.rb
+++ b/actionview/test/template/test_case_test.rb
@@ -328,9 +328,10 @@ module ActionView
     test "supports specifying locals (failing)" do
       controller.controller_path = "test"
       render(:template => "test/calling_partial_with_layout")
-      assert_raise ActiveSupport::TestCase::Assertion, /Somebody else.*David/m do
+      e = assert_raise ActiveSupport::TestCase::Assertion do
         assert_template :partial => "_partial_for_use_in_layout", :locals => { :name => "Somebody Else" }
       end
+      assert_match(/Somebody Else.*David/m, e.message)
     end
 
     test 'supports different locals on the same partial' do
diff --git a/activerecord/test/cases/enum_test.rb b/activerecord/test/cases/enum_test.rb
index e70d492efd..3b7bbcf47a 100644
--- a/activerecord/test/cases/enum_test.rb
+++ b/activerecord/test/cases/enum_test.rb
@@ -229,9 +229,10 @@ class EnumTest < ActiveRecord::TestCase
     ]
 
     conflicts.each_with_index do |name, i|
-      assert_raises(ArgumentError, "enum name `#{name}` should not be allowed") do
+      e = assert_raises(ArgumentError) do
         klass.class_eval { enum name => ["value_#{i}"] }
       end
+      assert_match(/You tried to define an enum named \"#{name}\" on the model/, e.message)
     end
   end
 
@@ -251,9 +252,10 @@ class EnumTest < ActiveRecord::TestCase
     ]
 
     conflicts.each_with_index do |value, i|
-      assert_raises(ArgumentError, "enum value `#{value}` should not be allowed") do
+      e = assert_raises(ArgumentError, "enum value `#{value}` should not be allowed") do
         klass.class_eval { enum "status_#{i}" => [value] }
       end
+      assert_match(/You tried to define an enum named .* on the model/, e.message)
     end
   end
 
diff --git a/activerecord/test/cases/migration_test.rb b/activerecord/test/cases/migration_test.rb
index 5f9fd5d527..3b73685a2c 100644
--- a/activerecord/test/cases/migration_test.rb
+++ b/activerecord/test/cases/migration_test.rb
@@ -508,12 +508,14 @@ class MigrationTest < ActiveRecord::TestCase
   if current_adapter?(:MysqlAdapter, :Mysql2Adapter, :PostgreSQLAdapter)
     def test_out_of_range_limit_should_raise
       Person.connection.drop_table :test_limits rescue nil
-      assert_raise(ActiveRecord::ActiveRecordError, "integer limit didn't raise") do
+      e = assert_raise(ActiveRecord::ActiveRecordError, "integer limit didn't raise") do
         Person.connection.create_table :test_integer_limits, :force => true do |t|
           t.column :bigone, :integer, :limit => 10
         end
       end
 
+      assert_match(/No integer type has byte size 10/, e.message)
+
       unless current_adapter?(:PostgreSQLAdapter)
         assert_raise(ActiveRecord::ActiveRecordError, "text limit didn't raise") do
           Person.connection.create_table :test_text_limits, :force => true do |t|
diff --git a/activerecord/test/cases/scoping/named_scoping_test.rb b/activerecord/test/cases/scoping/named_scoping_test.rb
index 8cd94ebcc2..e4cc533517 100644
--- a/activerecord/test/cases/scoping/named_scoping_test.rb
+++ b/activerecord/test/cases/scoping/named_scoping_test.rb
@@ -317,13 +317,15 @@ class NamedScopingTest < ActiveRecord::TestCase
     ]
 
     conflicts.each do |name|
-      assert_raises(ArgumentError, "scope `#{name}` should not be allowed") do
+      e = assert_raises(ArgumentError, "scope `#{name}` should not be allowed") do
         klass.class_eval { scope name, ->{ where(approved: true) } }
       end
+      assert_match(/You tried to define a scope named \"#{name}\" on the model/, e.message)
 
-      assert_raises(ArgumentError, "scope `#{name}` should not be allowed") do
+      e = assert_raises(ArgumentError, "scope `#{name}` should not be allowed") do
         subklass.class_eval { scope name, ->{ where(approved: true) } }
       end
+      assert_match(/You tried to define a scope named \"#{name}\" on the model/, e.message)
     end
 
     non_conflicts.each do |name|