this repo has no description
Add simple full file parsing test
For now, this uses JSON to print objects on error, which is hard to
debug. It should probably use something like google/go-cmp instead,
because these objects are now too large for direct comparison.
+121
+93
gitdiff/parser_test.go
+93
gitdiff/parser_test.go
···
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import (
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"bufio"
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"encoding/json"
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"io"
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"os"
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"reflect"
···
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if !reflect.DeepEqual(test.Output, f) {
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t.Errorf("incorrect file\nexpected: %+v\nactual: %+v", test.Output, f)
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}
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})
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}
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}
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func TestParse(t *testing.T) {
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tests := map[string]struct {
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InputFile string
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Output []*File
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Err bool
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}{
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"singleFile": {
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InputFile: "testdata/single_file.patch",
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Output: []*File{
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{
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OldName: "dir/file.txt",
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NewName: "dir/file.txt",
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OldMode: os.FileMode(0100644),
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OldOIDPrefix: "ebe9fa54",
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NewOIDPrefix: "fe103e1d",
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Fragments: []*Fragment{
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{
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OldPosition: 3,
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OldLines: 6,
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NewPosition: 3,
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NewLines: 8,
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Comment: "fragment 1",
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Lines: []FragmentLine{
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{OpContext, "context line\n"},
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{OpDelete, "old line 1\n"},
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{OpDelete, "old line 2\n"},
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{OpContext, "context line\n"},
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{OpAdd, "new line 1\n"},
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{OpAdd, "new line 2\n"},
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{OpAdd, "new line 3\n"},
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{OpContext, "context line\n"},
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{OpDelete, "old line 3\n"},
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{OpAdd, "new line 4\n"},
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{OpAdd, "new line 5\n"},
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},
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LinesAdded: 5,
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LinesDeleted: 3,
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LeadingContext: 1,
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},
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{
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OldPosition: 31,
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OldLines: 2,
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NewPosition: 33,
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NewLines: 2,
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Comment: "fragment 2",
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Lines: []FragmentLine{
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{OpContext, "context line\n"},
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{OpDelete, "old line 4\n"},
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{OpAdd, "new line 6\n"},
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},
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LinesAdded: 1,
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LinesDeleted: 1,
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LeadingContext: 1,
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},
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},
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},
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},
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},
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}
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for name, test := range tests {
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t.Run(name, func(t *testing.T) {
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f, err := os.Open(test.InputFile)
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if err != nil {
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t.Fatalf("unexpected error opening input file: %v", err)
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}
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files, err := Parse(f)
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if test.Err {
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if err == nil || err == io.EOF {
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t.Fatalf("expected error parsing patch, but got %v", err)
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}
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return
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}
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if err != nil {
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t.Fatalf("unexpected error parsing patch: %v", err)
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}
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if len(test.Output) != len(files) {
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t.Fatalf("incorrect number of parsed files: expected %d, actual %d", len(test.Output), len(files))
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}
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for i := range test.Output {
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if !reflect.DeepEqual(test.Output[i], files[i]) {
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exp, _ := json.MarshalIndent(test.Output[i], "", " ")
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act, _ := json.MarshalIndent(files[i], "", " ")
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t.Errorf("incorrect file at position %d\nexpected: %s\nactual: %s", i, exp, act)
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}
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}
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})
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}
+28
gitdiff/testdata/single_file.patch
+28
gitdiff/testdata/single_file.patch
···
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commit 5d9790fec7d95aa223f3d20936340bf55ff3dcbe
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Author: Morton Haypenny <mhaypenny@example.com>
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Date: Tue Apr 2 22:55:40 2019 -0700
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A single file with multiple fragments.
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The content is arbitrary.
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diff --git a/dir/file.txt b/dir/file.txt
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index ebe9fa54..fe103e1d 100644
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--- a/dir/file.txt
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+++ b/dir/file.txt
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@@ -3,6 +3,8 @@ fragment 1
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context line
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-old line 1
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-old line 2
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context line
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+new line 1
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+new line 2
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+new line 3
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context line
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-old line 3
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+new line 4
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+new line 5
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@@ -31,2 +33,2 @@ fragment 2
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context line
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-old line 4
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+new line 6