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2ad651e9e2
The importPrefix logic is complicated by Windows line endings, since go/ast isn't aware of different line endings in comment text. I made a few changes to the way that import prefixes are computed to handle this. Specifically, for comments, we try to make sure the range ends on a full line as much as possible, because that addresses the line ending issue. Fixes golang/go#40355 Change-Id: I84c1cfa0d0bae532e52ed181e8a5383157feef24 Reviewed-on: https://go-review.googlesource.com/c/tools/+/244897 Run-TryBot: Rebecca Stambler <rstambler@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Heschi Kreinick <heschi@google.com>
50 lines
1.6 KiB
Go
50 lines
1.6 KiB
Go
package source
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import (
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"fmt"
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"testing"
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"golang.org/x/tools/internal/lsp/diff"
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"golang.org/x/tools/internal/lsp/diff/myers"
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)
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func TestImportPrefix(t *testing.T) {
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for i, tt := range []struct {
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input, want string
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}{
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{"package foo", "package foo"},
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{"package foo\n", "package foo\n"},
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{"package foo\n\nfunc f(){}\n", "package foo\n"},
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{"package foo\n\nimport \"fmt\"\n", "package foo\n\nimport \"fmt\""},
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{"package foo\nimport (\n\"fmt\"\n)\n", "package foo\nimport (\n\"fmt\"\n)"},
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{"\n\n\npackage foo\n", "\n\n\npackage foo\n"},
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{"// hi \n\npackage foo //xx\nfunc _(){}\n", "// hi \n\npackage foo //xx\n"},
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{"package foo //hi\n", "package foo //hi\n"},
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{"//hi\npackage foo\n//a\n\n//b\n", "//hi\npackage foo\n//a\n\n//b\n"},
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{
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"package a\n\nimport (\n \"fmt\"\n)\n//hi\n",
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"package a\n\nimport (\n \"fmt\"\n)\n//hi\n",
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},
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{`package a /*hi*/`, `package a /*hi*/`},
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{"package main\r\n\r\nimport \"go/types\"\r\n\r\n/*\r\n\r\n */\r\n", "package main\r\n\r\nimport \"go/types\"\r\n\r\n/*\r\n\r\n */\r\n"},
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{"package x; import \"os\"; func f() {}\n\n", "package x; import \"os\""},
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{"package x; func f() {fmt.Println()}\n\n", "package x"},
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} {
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got := importPrefix([]byte(tt.input))
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if got != tt.want {
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t.Errorf("%d: failed for %q:\n%s", i, tt.input, diffStr(tt.want, got))
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}
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}
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}
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func diffStr(want, got string) string {
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if want == got {
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return ""
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}
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// Add newlines to avoid newline messages in diff.
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want += "\n"
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got += "\n"
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d := myers.ComputeEdits("", want, got)
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return fmt.Sprintf("%q", diff.ToUnified("want", "got", want, d))
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}
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