eval/shada: Add testing for unnamed register with setreg and startup

test/functional/legacy/eval_spec.lua

@@ -516,6 +516,15 @@ describe('eval', function()
     eq({'item'}, eval("y"))
   end)
 
+  it('sets the unnamed register when the "u" option is passed to setreg', function()
+    execute("call setreg('a','a reg', 'cu')")
+    eq("a reg", eval('@"'))
+    execute("call setreg('b','b reg', 'cu')")
+    eq("b reg", eval('@"'))
+    execute("call setreg('c','c reg', 'c')")
+    eq("b reg", eval('@"'))
+  end)
+
   it('search and expressions', function()
     command('so test_eval_setup.vim')
     command([=[call SetReg('/', ['abc/'])]=])

test/functional/plugin/shada_spec.lua

@@ -636,6 +636,7 @@ describe('In autoload/shada.vim', function()
         '  # Required key missing: rc',
         '  + rw   block width  0',
         '  + rt   type         CHARACTERWISE',
+        '  + ru   is_unnamed   FALSE',
       }, ([[ [{'type': 5, 'timestamp': 0, 'data': {
       }}] ]]):gsub('\n', ''))
       sd2strings_eq({
@@ -645,6 +646,7 @@ describe('In autoload/shada.vim', function()
         '  # Required key missing: rc',
         '  + rw   block width  0',
         '  + rt   type         CHARACTERWISE',
+        '  + ru   is_unnamed   FALSE',
       }, ([[ [{'type': 5, 'timestamp': 0, 'data': {
         'n': 0x20,
       }}] ]]):gsub('\n', ''))
@@ -655,9 +657,11 @@ describe('In autoload/shada.vim', function()
         '  + rc   contents     ["abc", "def"]',
         '  + rw   block width  0',
         '  + rt   type         CHARACTERWISE',
+        '  + ru   is_unnamed   FALSE',
       }, ([[ [{'type': 5, 'timestamp': 0, 'data': {
         'n': 0x20,
         'rc': ["abc", "def"],
+        'ru': {'_TYPE': v:msgpack_types.boolean, '_VAL': 0},
       }}] ]]):gsub('\n', ''))
       sd2strings_eq({
         'Register with timestamp ' .. epoch .. ':',
@@ -668,9 +672,11 @@ describe('In autoload/shada.vim', function()
         '  | - "abcdefghijklmnopqrstuvwxyz"',
         '  + rw   block width  0',
         '  + rt   type         CHARACTERWISE',
+        '  + ru   is_unnamed   TRUE',
       }, ([[ [{'type': 5, 'timestamp': 0, 'data': {
         'n': 0x20,
         'rc': ['abcdefghijklmnopqrstuvwxyz', 'abcdefghijklmnopqrstuvwxyz'],
+        'ru': {'_TYPE': v:msgpack_types.boolean, '_VAL': 1},
       }}] ]]):gsub('\n', ''))
       sd2strings_eq({
         'Register with timestamp ' .. epoch .. ':',
@@ -681,6 +687,7 @@ describe('In autoload/shada.vim', function()
         '  | - "abcdefghijklmnopqrstuvwxyz"',
         '  + rw   block width  0',
         '  + rt   type         CHARACTERWISE',
+        '  + ru   is_unnamed   FALSE',
       }, ([[ [{'type': 5, 'timestamp': 0, 'data': {
         'n': 0x20,
         'rc': ['abcdefghijklmnopqrstuvwxyz', 'abcdefghijklmnopqrstuvwxyz'],
@@ -696,6 +703,7 @@ describe('In autoload/shada.vim', function()
         '  | - "abcdefghijklmnopqrstuvwxyz"',
         '  + rw   block width  5',
         '  + rt   type         LINEWISE',
+        '  + ru   is_unnamed   FALSE',
       }, ([[ [{'type': 5, 'timestamp': 0, 'data': {
         'n': 0x20,
         'rc': ['abcdefghijklmnopqrstuvwxyz', 'abcdefghijklmnopqrstuvwxyz'],
@@ -712,6 +720,7 @@ describe('In autoload/shada.vim', function()
         '  # Expected integer',
         '  + rw   block width  ""',
         '  + rt   type         BLOCKWISE',
+        '  + ru   is_unnamed   FALSE',
       }, ([[ [{'type': 5, 'timestamp': 0, 'data': {
         'n': 0x20,
         'rc': ['abcdefghijklmnopqrstuvwxyz', 'abcdefghijklmnopqrstuvwxyz'],
@@ -729,12 +738,31 @@ describe('In autoload/shada.vim', function()
         '  # Unexpected enum value: expected one of 0 (CHARACTERWISE), '
         .. '1 (LINEWISE), 2 (BLOCKWISE)',
         '  + rt   type         10',
+        '  + ru   is_unnamed   FALSE',
       }, ([[ [{'type': 5, 'timestamp': 0, 'data': {
         'n': 0x20,
         'rc': 0,
         'rw': -1,
         'rt': 10,
       }}] ]]):gsub('\n', ''))
+      sd2strings_eq({
+        'Register with timestamp ' .. epoch .. ':',
+        '  % Key  Description  Value',
+        '  + n    name         \' \'',
+        '  + rc   contents     @',
+        '  | - "abcdefghijklmnopqrstuvwxyz"',
+        '  | - "abcdefghijklmnopqrstuvwxyz"',
+        '  + rw   block width  5',
+        '  + rt   type         LINEWISE',
+        '  # Expected boolean',
+        '  + ru   is_unnamed   0',
+      }, ([[ [{'type': 5, 'timestamp': 0, 'data': {
+        'n': 0x20,
+        'rc': ['abcdefghijklmnopqrstuvwxyz', 'abcdefghijklmnopqrstuvwxyz'],
+        'rw': 5,
+        'rt': 1,
+        'ru': 0,
+      }}] ]]):gsub('\n', ''))
     end)
 
     it('works with variable items', function()

test/functional/shada/registers_spec.lua

@@ -148,10 +148,23 @@ describe('ShaDa support code', function()
     eq({{'\171«'}, 'v'}, getreg('e'))
   end)
 
-  it('remembers which register was the unnamed register when loading',
+  it('defaults the unnamed register to register 0 if it wasn\'t set',
   function()
     setreg('0', {'zero'}, 'c')
     setreg('1', {'one'}, 'c')
+    setreg('2', {'two'}, 'c')
+    nvim_command('qall')
+    reset()
+    eq({{'zero'}, 'v'}, getreg('0'))
+    eq({{'one'}, 'v'}, getreg('1'))
+    eq({{'zero'}, 'v'}, getreg('"'))
+  end)
+
+  it('remembers which register was the unnamed register when loading',
+  function()
+    setreg('0', {'zero'}, 'c')
+    setreg('1', {'one'}, 'cu')
+    setreg('2', {'two'}, 'c')
     nvim_command('qall')
     reset()
     eq({{'zero'}, 'v'}, getreg('0'))