3d8b5ad5f3
* CutDiffAroundLine makes the incorrect assumption that `---` and `+++` always represent part of the header of a diff. This PR adds a flag to its parsing to prevent this problem and adds a streaming parsing technique to CutDiffAroundLine using an io.pipe instead of just sending data to an unbounded buffer. Fix #14711 Signed-off-by: Andrew Thornton <art27@cantab.net> * Handle unquoted comment patch files When making comment patches unfortunately the patch does not always quote the filename This makes the diff --git header ambiguous again. This PR finally adds handling for ambiguity in to parse patch Fix #14812 Signed-off-by: Andrew Thornton <art27@cantab.net> * Add in testing for no error There is no way currently for CutDiffAroundLine in this test to cause an error however, it should still be tested. Signed-off-by: Andrew Thornton <art27@cantab.net>
135 lines
3.5 KiB
Go
135 lines
3.5 KiB
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package git
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import (
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"strings"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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const exampleDiff = `diff --git a/README.md b/README.md
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--- a/README.md
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+++ b/README.md
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@@ -1,3 +1,6 @@
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# gitea-github-migrator
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+
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+ Build Status
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- Latest Release
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Docker Pulls
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+ cut off
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+ cut off`
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const breakingDiff = `diff --git a/aaa.sql b/aaa.sql
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index d8e4c92..19dc8ad 100644
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--- a/aaa.sql
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+++ b/aaa.sql
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@@ -1,9 +1,10 @@
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--some comment
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--- some comment 5
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+--some coment 2
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+-- some comment 3
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create or replace procedure test(p1 varchar2)
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is
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begin
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---new comment
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dbms_output.put_line(p1);
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+--some other comment
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end;
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/
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`
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func TestCutDiffAroundLine(t *testing.T) {
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result, err := CutDiffAroundLine(strings.NewReader(exampleDiff), 4, false, 3)
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assert.NoError(t, err)
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resultByLine := strings.Split(result, "\n")
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assert.Len(t, resultByLine, 7)
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// Check if headers got transferred
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assert.Equal(t, "diff --git a/README.md b/README.md", resultByLine[0])
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assert.Equal(t, "--- a/README.md", resultByLine[1])
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assert.Equal(t, "+++ b/README.md", resultByLine[2])
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// Check if hunk header is calculated correctly
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assert.Equal(t, "@@ -2,2 +3,2 @@", resultByLine[3])
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// Check if line got transferred
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assert.Equal(t, "+ Build Status", resultByLine[4])
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// Must be same result as before since old line 3 == new line 5
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newResult, err := CutDiffAroundLine(strings.NewReader(exampleDiff), 3, true, 3)
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assert.NoError(t, err)
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assert.Equal(t, result, newResult, "Must be same result as before since old line 3 == new line 5")
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newResult, err = CutDiffAroundLine(strings.NewReader(exampleDiff), 6, false, 300)
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assert.NoError(t, err)
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assert.Equal(t, exampleDiff, newResult)
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emptyResult, err := CutDiffAroundLine(strings.NewReader(exampleDiff), 6, false, 0)
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assert.NoError(t, err)
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assert.Empty(t, emptyResult)
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// Line is out of scope
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emptyResult, err = CutDiffAroundLine(strings.NewReader(exampleDiff), 434, false, 0)
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assert.NoError(t, err)
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assert.Empty(t, emptyResult)
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// Handle minus diffs properly
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minusDiff, err := CutDiffAroundLine(strings.NewReader(breakingDiff), 2, false, 4)
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assert.NoError(t, err)
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expected := `diff --git a/aaa.sql b/aaa.sql
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--- a/aaa.sql
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+++ b/aaa.sql
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@@ -1,9 +1,10 @@
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--some comment
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--- some comment 5
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+--some coment 2`
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assert.Equal(t, expected, minusDiff)
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// Handle minus diffs properly
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minusDiff, err = CutDiffAroundLine(strings.NewReader(breakingDiff), 3, false, 4)
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assert.NoError(t, err)
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expected = `diff --git a/aaa.sql b/aaa.sql
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--- a/aaa.sql
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+++ b/aaa.sql
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@@ -1,9 +1,10 @@
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--some comment
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--- some comment 5
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+--some coment 2
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+-- some comment 3`
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assert.Equal(t, expected, minusDiff)
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}
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func BenchmarkCutDiffAroundLine(b *testing.B) {
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for n := 0; n < b.N; n++ {
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CutDiffAroundLine(strings.NewReader(exampleDiff), 3, true, 3)
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}
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}
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func ExampleCutDiffAroundLine() {
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const diff = `diff --git a/README.md b/README.md
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--- a/README.md
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+++ b/README.md
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@@ -1,3 +1,6 @@
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# gitea-github-migrator
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+
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+ Build Status
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- Latest Release
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Docker Pulls
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+ cut off
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+ cut off`
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result, _ := CutDiffAroundLine(strings.NewReader(diff), 4, false, 3)
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println(result)
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}
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func TestParseDiffHunkString(t *testing.T) {
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leftLine, leftHunk, rightLine, rightHunk := ParseDiffHunkString("@@ -19,3 +19,5 @@ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER")
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assert.EqualValues(t, 19, leftLine)
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assert.EqualValues(t, 3, leftHunk)
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assert.EqualValues(t, 19, rightLine)
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assert.EqualValues(t, 5, rightHunk)
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}
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