diff options
Diffstat (limited to 'src/testdir/test_diffmode.vim')
| -rw-r--r-- | src/testdir/test_diffmode.vim | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/src/testdir/test_diffmode.vim b/src/testdir/test_diffmode.vim index 64a8818d67..2211ba05a2 100644 --- a/src/testdir/test_diffmode.vim +++ b/src/testdir/test_diffmode.vim @@ -1716,5 +1716,182 @@ func Test_diff_put_and_undo() set nodiff endfunc +" Test for the diff() function +def Test_diff_func() + # string is added/removed/modified at the beginning + assert_equal("@@ -0,0 +1 @@\n+abc\n", + diff(['def'], ['abc', 'def'], {output: 'unified'})) + assert_equal([{from_idx: 0, from_count: 0, to_idx: 0, to_count: 1}], + diff(['def'], ['abc', 'def'], {output: 'indices'})) + assert_equal("@@ -1 +0,0 @@\n-abc\n", + diff(['abc', 'def'], ['def'], {output: 'unified'})) + assert_equal([{from_idx: 0, from_count: 1, to_idx: 0, to_count: 0}], + diff(['abc', 'def'], ['def'], {output: 'indices'})) + assert_equal("@@ -1 +1 @@\n-abc\n+abx\n", + diff(['abc', 'def'], ['abx', 'def'], {output: 'unified'})) + assert_equal([{from_idx: 0, from_count: 1, to_idx: 0, to_count: 1}], + diff(['abc', 'def'], ['abx', 'def'], {output: 'indices'})) + + # string is added/removed/modified at the end + assert_equal("@@ -1,0 +2 @@\n+def\n", + diff(['abc'], ['abc', 'def'], {output: 'unified'})) + assert_equal([{from_idx: 1, from_count: 0, to_idx: 1, to_count: 1}], + diff(['abc'], ['abc', 'def'], {output: 'indices'})) + assert_equal("@@ -2 +1,0 @@\n-def\n", + diff(['abc', 'def'], ['abc'], {output: 'unified'})) + assert_equal([{from_idx: 1, from_count: 1, to_idx: 1, to_count: 0}], + diff(['abc', 'def'], ['abc'], {output: 'indices'})) + assert_equal("@@ -2 +2 @@\n-def\n+xef\n", + diff(['abc', 'def'], ['abc', 'xef'], {output: 'unified'})) + assert_equal([{from_idx: 1, from_count: 1, to_idx: 1, to_count: 1}], + diff(['abc', 'def'], ['abc', 'xef'], {output: 'indices'})) + + # string is added/removed/modified in the middle + assert_equal("@@ -2,0 +3 @@\n+xxx\n", + diff(['111', '222', '333'], ['111', '222', 'xxx', '333'], {output: 'unified'})) + assert_equal([{from_idx: 2, from_count: 0, to_idx: 2, to_count: 1}], + diff(['111', '222', '333'], ['111', '222', 'xxx', '333'], {output: 'indices'})) + assert_equal("@@ -3 +2,0 @@\n-333\n", + diff(['111', '222', '333', '444'], ['111', '222', '444'], {output: 'unified'})) + assert_equal([{from_idx: 2, from_count: 1, to_idx: 2, to_count: 0}], + diff(['111', '222', '333', '444'], ['111', '222', '444'], {output: 'indices'})) + assert_equal("@@ -3 +3 @@\n-333\n+xxx\n", + diff(['111', '222', '333', '444'], ['111', '222', 'xxx', '444'], {output: 'unified'})) + assert_equal([{from_idx: 2, from_count: 1, to_idx: 2, to_count: 1}], + diff(['111', '222', '333', '444'], ['111', '222', 'xxx', '444'], {output: 'indices'})) + + # new strings are added to an empty List + assert_equal("@@ -0,0 +1,2 @@\n+abc\n+def\n", + diff([], ['abc', 'def'], {output: 'unified'})) + assert_equal([{from_idx: 0, from_count: 0, to_idx: 0, to_count: 2}], + diff([], ['abc', 'def'], {output: 'indices'})) + + # all the strings are removed from a List + assert_equal("@@ -1,2 +0,0 @@\n-abc\n-def\n", + diff(['abc', 'def'], [], {output: 'unified'})) + assert_equal([{from_idx: 0, from_count: 2, to_idx: 0, to_count: 0}], + diff(['abc', 'def'], [], {output: 'indices'})) + + # First character is added/removed/different + assert_equal("@@ -1 +1 @@\n-abc\n+bc\n", + diff(['abc'], ['bc'], {output: 'unified'})) + assert_equal([{from_idx: 0, from_count: 1, to_idx: 0, to_count: 1}], + diff(['abc'], ['bc'], {output: 'indices'})) + assert_equal("@@ -1 +1 @@\n-bc\n+abc\n", + diff(['bc'], ['abc'], {output: 'unified'})) + assert_equal([{from_idx: 0, from_count: 1, to_idx: 0, to_count: 1}], + diff(['bc'], ['abc'], {output: 'indices'})) + assert_equal("@@ -1 +1 @@\n-abc\n+xbc\n", + diff(['abc'], ['xbc'], {output: 'unified'})) + assert_equal([{from_idx: 0, from_count: 1, to_idx: 0, to_count: 1}], + diff(['abc'], ['xbc'], {output: 'indices'})) + + # Last character is added/removed/different + assert_equal("@@ -1 +1 @@\n-abc\n+abcd\n", + diff(['abc'], ['abcd'], {output: 'unified'})) + assert_equal([{from_idx: 0, from_count: 1, to_idx: 0, to_count: 1}], + diff(['abc'], ['abcd'], {output: 'indices'})) + assert_equal("@@ -1 +1 @@\n-abcd\n+abc\n", + diff(['abcd'], ['abc'], {output: 'unified'})) + assert_equal([{from_idx: 0, from_count: 1, to_idx: 0, to_count: 1}], + diff(['abcd'], ['abc'], {output: 'indices'})) + assert_equal("@@ -1 +1 @@\n-abc\n+abx\n", + diff(['abc'], ['abx'], {output: 'unified'})) + assert_equal([{from_idx: 0, from_count: 1, to_idx: 0, to_count: 1}], + diff(['abc'], ['abx'], {output: 'indices'})) + + # partial string modification at the start and at the end. + var fromlist =<< trim END + one two + three four + five six + END + var tolist =<< trim END + one + six + END + assert_equal("@@ -1,3 +1,2 @@\n-one two\n-three four\n-five six\n+one\n+six\n", diff(fromlist, tolist, {output: 'unified'})) + assert_equal([{from_idx: 0, from_count: 3, to_idx: 0, to_count: 2}], + diff(fromlist, tolist, {output: 'indices'})) + + # non-contiguous modifications + fromlist =<< trim END + one two + three four + five abc six + END + tolist =<< trim END + one abc two + three four + five six + END + assert_equal("@@ -1 +1 @@\n-one two\n+one abc two\n@@ -3 +3 @@\n-five abc six\n+five six\n", + diff(fromlist, tolist, {output: 'unified'})) + assert_equal([{from_idx: 0, from_count: 1, to_idx: 0, to_count: 1}, + {from_idx: 2, from_count: 1, to_idx: 2, to_count: 1}], + diff(fromlist, tolist, {output: 'indices'})) + + # add/remove blank lines + assert_equal("@@ -2,2 +1,0 @@\n-\n-\n", + diff(['one', '', '', 'two'], ['one', 'two'], {output: 'unified'})) + assert_equal([{from_idx: 1, from_count: 2, to_idx: 1, to_count: 0}], + diff(['one', '', '', 'two'], ['one', 'two'], {output: 'indices'})) + assert_equal("@@ -1,0 +2,2 @@\n+\n+\n", + diff(['one', 'two'], ['one', '', '', 'two'], {output: 'unified'})) + assert_equal([{'from_idx': 1, 'from_count': 0, 'to_idx': 1, 'to_count': 2}], + diff(['one', 'two'], ['one', '', '', 'two'], {output: 'indices'})) + + # diff ignoring case + assert_equal('', diff(['abc', 'def'], ['ABC', 'DEF'], {icase: true, output: 'unified'})) + assert_equal([], diff(['abc', 'def'], ['ABC', 'DEF'], {icase: true, output: 'indices'})) + + # diff ignoring all whitespace changes except leading whitespace changes + assert_equal('', diff(['abc def'], ['abc def '], {iwhite: true})) + assert_equal("@@ -1 +1 @@\n- abc\n+ xxx\n", diff([' abc'], [' xxx'], {iwhite: v:true})) + assert_equal("@@ -1 +1 @@\n- abc\n+ xxx\n", diff([' abc'], [' xxx'], {iwhite: v:false})) + assert_equal("@@ -1 +1 @@\n-abc \n+xxx \n", diff(['abc '], ['xxx '], {iwhite: v:true})) + assert_equal("@@ -1 +1 @@\n-abc \n+xxx \n", diff(['abc '], ['xxx '], {iwhite: v:false})) + + # diff ignoring all whitespace changes + assert_equal('', diff(['abc def'], [' abc def '], {iwhiteall: true})) + assert_equal("@@ -1 +1 @@\n- abc \n+ xxx \n", diff([' abc '], [' xxx '], {iwhiteall: v:true})) + assert_equal("@@ -1 +1 @@\n- abc \n+ xxx \n", diff([' abc '], [' xxx '], {iwhiteall: v:false})) + + # diff ignoring trailing whitespace changes + assert_equal('', diff(['abc'], ['abc '], {iwhiteeol: true})) + + # diff ignoring blank lines + assert_equal('', diff(['one', '', '', 'two'], ['one', 'two'], {iblank: true})) + assert_equal('', diff(['one', 'two'], ['one', '', '', 'two'], {iblank: true})) + + # same string + assert_equal('', diff(['abc', 'def', 'ghi'], ['abc', 'def', 'ghi'])) + assert_equal('', diff([''], [''])) + assert_equal('', diff([], [])) + + # different xdiff algorithms + for algo in ['myers', 'minimal', 'patience', 'histogram'] + assert_equal("@@ -1 +1 @@\n- abc \n+ xxx \n", + diff([' abc '], [' xxx '], {algorithm: algo, output: 'unified'})) + assert_equal([{from_idx: 0, from_count: 1, to_idx: 0, to_count: 1}], + diff([' abc '], [' xxx '], {algorithm: algo, output: 'indices'})) + endfor + assert_equal("@@ -1 +1 @@\n- abc \n+ xxx \n", + diff([' abc '], [' xxx '], {indent-heuristic: true, output: 'unified'})) + assert_equal([{from_idx: 0, from_count: 1, to_idx: 0, to_count: 1}], + diff([' abc '], [' xxx '], {indent-heuristic: true, output: 'indices'})) + + # identical strings + assert_equal('', diff(['111', '222'], ['111', '222'], {output: 'unified'})) + assert_equal([], diff(['111', '222'], ['111', '222'], {output: 'indices'})) + assert_equal('', diff([], [], {output: 'unified'})) + assert_equal([], diff([], [], {output: 'indices'})) + + # Error cases + assert_fails('call diff({}, ["a"])', 'E1211:') + assert_fails('call diff(["a"], {})', 'E1211:') + assert_fails('call diff(["a"], ["a"], [])', 'E1206:') + assert_fails('call diff(["a"], ["a"], {output: "xyz"})', 'E106: Unsupported diff output format: xyz') +enddef " vim: shiftwidth=2 sts=2 expandtab |