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internal/lsp: fix test failures caused by diff algorithm variance

Fixes golang/go#34833

Change-Id: I7f8c1d3214914af40a8b9c3532f9a0a6e17246c0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/200557
Run-TryBot: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
This commit is contained in:
Ian Cottrell 2019-10-10 19:09:50 -04:00
parent e5ffc44a6f
commit 2c43fbf27d

View File

@ -93,15 +93,15 @@ var TestCases = []struct {
LineEdits: []diff.TextEdit{{Span: newSpan(0, 8), NewText: "bunker\n"}},
}, {
Name: "insert_line",
In: "one\nthree\n",
Out: "one\ntwo\nthree\n",
In: "1: one\n3: three\n",
Out: "1: one\n2: two\n3: three\n",
Unified: UnifiedPrefix + `
@@ -1,2 +1,3 @@
one
+two
three
1: one
+2: two
3: three
`[1:],
Edits: []diff.TextEdit{{Span: newSpan(4, 4), NewText: "two\n"}},
Edits: []diff.TextEdit{{Span: newSpan(7, 7), NewText: "2: two\n"}},
}, {
Name: "replace_no_newline",
In: "A",
@ -174,6 +174,7 @@ var TestCases = []struct {
{Span: newSpan(2, 8), NewText: "H\nI\nJ\n"},
{Span: newSpan(12, 14), NewText: "K\n"},
},
NoDiff: true, // diff algorithm produces different delete/insert pattern
},
}
@ -202,7 +203,7 @@ func DiffTest(t *testing.T, compute diff.ComputeEdits) {
if got != test.Out {
t.Errorf("got patched:\n%v\nfrom diff:\n%v\nexpected:\n%v", got, unified, test.Out)
}
if unified != test.Unified {
if !test.NoDiff && unified != test.Unified {
t.Errorf("got diff:\n%v\nexpected:\n%v", unified, test.Unified)
}
})