package diff
import (
"bytes"
"testing"
"gopkg.in/src-d/go-git.v4/plumbing"
"gopkg.in/src-d/go-git.v4/plumbing/filemode"
. "gopkg.in/check.v1"
)
func Test(t *testing.T) { TestingT(t) }
type UnifiedEncoderTestSuite struct{}
var _ = Suite(&UnifiedEncoderTestSuite{})
func (s *UnifiedEncoderTestSuite) TestBothFilesEmpty(c *C) {
buffer := bytes.NewBuffer(nil)
e := NewUnifiedEncoder(buffer, 1)
err := e.Encode(testPatch{filePatches: []testFilePatch{{}}})
c.Assert(err, IsNil)
}
func (s *UnifiedEncoderTestSuite) TestBinaryFile(c *C) {
buffer := bytes.NewBuffer(nil)
e := NewUnifiedEncoder(buffer, 1)
p := testPatch{
message: "",
filePatches: []testFilePatch{{
from: &testFile{
mode: filemode.Regular,
path: "binary",
seed: "something",
},
to: &testFile{
mode: filemode.Regular,
path: "binary",
seed: "otherthing",
},
}},
}
err := e.Encode(p)
c.Assert(err, IsNil)
c.Assert(buffer.String(), Equals, `diff --git a/binary b/binary
index a459bc245bdbc45e1bca99e7fe61731da5c48da4..6879395eacf3cc7e5634064ccb617ac7aa62be7d 100644
Binary files a/binary and b/binary differ
`)
}
func (s *UnifiedEncoderTestSuite) TestEncode(c *C) {
for _, f := range fixtures {
c.Log("executing: ", f.desc)
buffer := bytes.NewBuffer(nil)
e := NewUnifiedEncoder(buffer, f.context)
err := e.Encode(f.patch)
c.Assert(err, IsNil)
c.Assert(buffer.String(), Equals, f.diff)
}
}
var oneChunkPatch Patch = testPatch{
message: "",
filePatches: []testFilePatch{{
from: &testFile{
mode: filemode.Regular,
path: "onechunk.txt",
seed: "A\nB\nC\nD\nE\nF\nG\nH\nI\nJ\nK\nL\nM\nN\nÑ\nO\nP\nQ\nR\nS\nT\nU\nV\nW\nX\nY\nZ",
},
to: &testFile{
mode: filemode.Regular,
path: "onechunk.txt",
seed: "B\nC\nD\nE\nF\nG\nI\nJ\nK\nL\nM\nN\nO\nP\nQ\nR\nS\nT\nV\nW\nX\nY\nZ",
},
chunks: []testChunk{{
content: "A\n",
op: Delete,
}, {
content: "B\nC\nD\nE\nF\nG",
op: Equal,
}, {
content: "H\n",
op: Delete,
}, {
content: "I\nJ\nK\nL\nM\nN\n",
op: Equal,
}, {
content: "Ñ\n",
op: Delete,
}, {
content: "O\nP\nQ\nR\nS\nT\n",
op: Equal,
}, {
content: "U\n",
op: Delete,
}, {
content: "V\nW\nX\nY\nZ",
op: Equal,
}},
}},
}
var oneChunkPatchInverted Patch = testPatch{
message: "",
filePatches: []testFilePatch{{
to: &testFile{
mode: filemode.Regular,
path: "onechunk.txt",
seed: "A\nB\nC\nD\nE\nF\nG\nH\nI\nJ\nK\nL\nM\nN\nÑ\nO\nP\nQ\nR\nS\nT\nU\nV\nW\nX\nY\nZ",
},
from: &testFile{
mode: filemode.Regular,
path: "onechunk.txt",
seed: "B\nC\nD\nE\nF\nG\nI\nJ\nK\nL\nM\nN\nO\nP\nQ\nR\nS\nT\nV\nW\nX\nY\nZ",
},
chunks: []testChunk{{
content: "A\n",
op: Add,
}, {
content: "B\nC\nD\nE\nF\nG",
op: Equal,
}, {
content: "H\n",
op: Add,
}, {
content: "I\nJ\nK\nL\nM\nN\n",
op: Equal,
}, {
content: "Ñ\n",
op: Add,
}, {
content: "O\nP\nQ\nR\nS\nT\n",
op: Equal,
}, {
content: "U\n",
op: Add,
}, {
content: "V\nW\nX\nY\nZ",
op: Equal,
}},
}},
}
var fixtures []*fixture = []*fixture{{
patch: testPatch{
message: "",
filePatches: []testFilePatch{{
from: &testFile{
mode: filemode.Regular,
path: "README.md",
seed: "hello\nworld\n",
},
to: &testFile{
mode: filemode.Regular,
path: "README.md",
seed: "hello\nbug\n",
},
chunks: []testChunk{{
content: "hello",
op: Equal,
}, {
content: "world",
op: Delete,
}, {
content: "bug",
op: Add,
}},
}},
},
desc: "positive negative number",
context: 2,
diff: `diff --git a/README.md b/README.md
index 94954abda49de8615a048f8d2e64b5de848e27a1..f3dad9514629b9ff9136283ae331ad1fc95748a8 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,2 @@
hello
-world
+bug
`,
}, {
patch: testPatch{
message: "",
filePatches: []testFilePatch{{
from: &testFile{
mode: filemode.Regular,
path: "test.txt",
seed: "test",
},
to: &testFile{
mode: filemode.Executable,
path: "test.txt",
seed: "test",
},
chunks: nil,
}},
},
desc: "make executable",
context: 1,
diff: `diff --git a/test.txt b/test.txt
old mode 100644
new mode 100755
`,
}, {
patch: testPatch{
message: "",
filePatches: []testFilePatch{{
from: &testFile{
mode: filemode.Regular,
path: "test.txt",
seed: "test",
},
to: &testFile{
mode: filemode.Regular,
path: "test1.txt",
seed: "test",
},
chunks: nil,
}},
},
desc: "rename file",
context: 1,
diff: `diff --git a/test.txt b/test1.txt
rename from test.txt
rename to test1.txt
`,
}, {
patch: testPatch{
message: "",
filePatches: []testFilePatch{{
from: &testFile{
mode: filemode.Regular,
path: "test.txt",
seed: "test",
},
to: &testFile{
mode: filemode.Regular,
path: "test1.txt",
seed: "test1",
},
chunks: []testChunk{{
content: "test",
op: Delete,
}, {
content: "test1",
op: Add,
}},
}},
},
desc: "rename file with changes",
context: 1,
diff: `diff --git a/test.txt b/test1.txt
rename from test.txt
rename to test1.txt
index 30d74d258442c7c65512eafab474568dd706c430..f079749c42ffdcc5f52ed2d3a6f15b09307e975e 100644
--- a/test.txt
+++ b/test1.txt
@@ -1 +1 @@
-test
+test1
`,
}, {
patch: testPatch{
message: "",
filePatches: []testFilePatch{{
from: &testFile{
mode: filemode.Regular,
path: "test.txt",
seed: "test",
},
to: &testFile{
mode: filemode.Executable,
path: "test1.txt",
seed: "test",
},
chunks: nil,
}},
},
desc: "rename with file mode change",
context: 1,
diff: `diff --git a/test.txt b/test1.txt
old mode 100644
new mode 100755
rename from test.txt
rename to test1.txt
`,
}, {
patch: testPatch{
message: "",
filePatches: []testFilePatch{{
from: &testFile{
mode: filemode.Regular,
path: "test.txt",
seed: "test",
},
to: &testFile{
mode: filemode.Regular,
path: "test.txt",
seed: "test2",
},
chunks: []testChunk{{
content: "test",
op: Delete,
}, {
content: "test2",
op: Add,
}},
}},
},
desc: "one line change",
context: 1,
diff: `diff --git a/test.txt b/test.txt
index 30d74d258442c7c65512eafab474568dd706c430..d606037cb232bfda7788a8322492312d55b2ae9d 100644
--- a/test.txt
+++ b/test.txt
@@ -1 +1 @@
-test
+test2
`,
}, {
patch: testPatch{
message: "this is the message\n",
filePatches: []testFilePatch{{
from: &testFile{
mode: filemode.Regular,
path: "test.txt",
seed: "test",
},
to: &testFile{
mode: filemode.Regular,
path: "test.txt",
seed: "test2",
},
chunks: []testChunk{{
content: "test",
op: Delete,
}, {
content: "test2",
op: Add,
}},
}},
},
desc: "one line change with message",
context: 1,
diff: `this is the message
diff --git a/test.txt b/test.txt
index 30d74d258442c7c65512eafab474568dd706c430..d606037cb232bfda7788a8322492312d55b2ae9d 100644
--- a/test.txt
+++ b/test.txt
@@ -1 +1 @@
-test
+test2
`,
}, {
patch: testPatch{
message: "this is the message",
filePatches: []testFilePatch{{
from: &testFile{
mode: filemode.Regular,
path: "test.txt",
seed: "test",
},
to: &testFile{
mode: filemode.Regular,
path: "test.txt",
seed: "test2",
},
chunks: []testChunk{{
content: "test",
op: Delete,
}, {
content: "test2",
op: Add,
}},
}},
},
desc: "one line change with message and no end of line",
context: 1,
diff: `this is the message
diff --git a/test.txt b/test.txt
index 30d74d258442c7c65512eafab474568dd706c430..d606037cb232bfda7788a8322492312d55b2ae9d 100644
--- a/test.txt
+++ b/test.txt
@@ -1 +1 @@
-test
+test2
`,
}, {
patch: testPatch{
message: "",
filePatches: []testFilePatch{{
from: nil,
to: &testFile{
mode: filemode.Regular,
path: "new.txt",
seed: "test\ntest2\test3",
},
chunks: []testChunk{{
content: "test\ntest2\ntest3",
op: Add,
}},
}},
},
desc: "new file",
context: 1,
diff: `diff --git a/new.txt b/new.txt
new file mode 100644
index 0000000000000000000000000000000000000000..65c8dd02a42273038658a22b1cb29c8d9457ca12
--- /dev/null
+++ b/new.txt
@@ -0,0 +1,3 @@
+test
+test2
+test3
`,
}, {
patch: testPatch{
message: "",
filePatches: []testFilePatch{{
from: &testFile{
mode: filemode.Regular,
path: "old.txt",
seed: "test",
},
to: nil,
chunks: []testChunk{{
content: "test",
op: Delete,
}},
}},
},
desc: "delete file",
context: 1,
diff: `diff --git a/old.txt b/old.txt
deleted file mode 100644
index 30d74d258442c7c65512eafab474568dd706c430..0000000000000000000000000000000000000000
--- a/old.txt
+++ /dev/null
@@ -1 +0,0 @@
-test
`,
}, {
patch: oneChunkPatch,
desc: "modified deleting lines file with context to 1",
context: 1,
diff: `diff --git a/onechunk.txt b/onechunk.txt
index ab5eed5d4a2c33aeef67e0188ee79bed666bde6f..0adddcde4fd38042c354518351820eb06c417c82 100644
--- a/onechunk.txt
+++ b/onechunk.txt
@@ -1,2 +1 @@
-A
B
@@ -7,3 +6,2 @@ F
G
-H
I
@@ -14,3 +12,2 @@ M
N
-Ñ
O
@@ -21,3 +18,2 @@ S
T
-U
V
`,
}, {
patch: oneChunkPatch,
desc: "modified deleting lines file with context to 2",
context: 2,
diff: `diff --git a/onechunk.txt b/onechunk.txt
index ab5eed5d4a2c33aeef67e0188ee79bed666bde6f..0adddcde4fd38042c354518351820eb06c417c82 100644
--- a/onechunk.txt
+++ b/onechunk.txt
@@ -1,3 +1,2 @@
-A
B
C
@@ -6,5 +5,4 @@ E
F
G
-H
I
J
@@ -13,5 +11,4 @@ L
M
N
-Ñ
O
P
@@ -20,5 +17,4 @@ R
S
T
-U
V
W
`,
}, {
patch: oneChunkPatch,
desc: "modified deleting lines file with context to 6",
context: 6,
diff: `diff --git a/onechunk.txt b/onechunk.txt
index ab5eed5d4a2c33aeef67e0188ee79bed666bde6f..0adddcde4fd38042c354518351820eb06c417c82 100644
--- a/onechunk.txt
+++ b/onechunk.txt
@@ -1,27 +1,23 @@
-A
B
C
D
E
F
G
-H
I
J
K
L
M
N
-Ñ
O
P
Q
R
S
T
-U
V
W
X
Y
Z
`,
}, {
patch: oneChunkPatch,
desc: "modified deleting lines file with context to 3",
context: 3,
diff: `diff --git a/onechunk.txt b/onechunk.txt
index ab5eed5d4a2c33aeef67e0188ee79bed666bde6f..0adddcde4fd38042c354518351820eb06c417c82 100644
--- a/onechunk.txt
+++ b/onechunk.txt
@@ -1,25 +1,21 @@
-A
B
C
D
E
F
G
-H
I
J
K
L
M
N
-Ñ
O
P
Q
R
S
T
-U
V
W
X
`,
}, {
patch: oneChunkPatch,
desc: "modified deleting lines file with context to 4",
context: 4,
diff: `diff --git a/onechunk.txt b/onechunk.txt
index ab5eed5d4a2c33aeef67e0188ee79bed666bde6f..0adddcde4fd38042c354518351820eb06c417c82 100644
--- a/onechunk.txt
+++ b/onechunk.txt
@@ -1,26 +1,22 @@
-A
B
C
D
E
F
G
-H
I
J
K
L
M
N
-Ñ
O
P
Q
R
S
T
-U
V
W
X
Y
`,
}, {
patch: oneChunkPatch,
desc: "modified deleting lines file with context to 0",
context: 0,
diff: `diff --git a/onechunk.txt b/onechunk.txt
index ab5eed5d4a2c33aeef67e0188ee79bed666bde6f..0adddcde4fd38042c354518351820eb06c417c82 100644
--- a/onechunk.txt
+++ b/onechunk.txt
@@ -1 +0,0 @@
-A
@@ -8 +6,0 @@ G
-H
@@ -15 +12,0 @@ N
-Ñ
@@ -22 +18,0 @@ T
-U
`,
}, {
patch: oneChunkPatchInverted,
desc: "modified adding lines file with context to 1",
context: 1,
diff: `diff --git a/onechunk.txt b/onechunk.txt
index 0adddcde4fd38042c354518351820eb06c417c82..ab5eed5d4a2c33aeef67e0188ee79bed666bde6f 100644
--- a/onechunk.txt
+++ b/onechunk.txt
@@ -1 +1,2 @@
+A
B
@@ -6,2 +7,3 @@ F
G
+H
I
@@ -12,2 +14,3 @@ M
N
+Ñ
O
@@ -18,2 +21,3 @@ S
T
+U
V
`,
}, {
patch: oneChunkPatchInverted,
desc: "modified adding lines file with context to 2",
context: 2,
diff: `diff --git a/onechunk.txt b/onechunk.txt
index 0adddcde4fd38042c354518351820eb06c417c82..ab5eed5d4a2c33aeef67e0188ee79bed666bde6f 100644
--- a/onechunk.txt
+++ b/onechunk.txt
@@ -1,2 +1,3 @@
+A
B
C
@@ -5,4 +6,5 @@ E
F
G
+H
I
J
@@ -11,4 +13,5 @@ L
M
N
+Ñ
O
P
@@ -17,4 +20,5 @@ R
S
T
+U
V
W
`,
}, {
patch: oneChunkPatchInverted,
desc: "modified adding lines file with context to 3",
context: 3,
diff: `diff --git a/onechunk.txt b/onechunk.txt
index 0adddcde4fd38042c354518351820eb06c417c82..ab5eed5d4a2c33aeef67e0188ee79bed666bde6f 100644
--- a/onechunk.txt
+++ b/onechunk.txt
@@ -1,21 +1,25 @@
+A
B
C
D
E
F
G
+H
I
J
K
L
M
N
+Ñ
O
P
Q
R
S
T
+U
V
W
X
`,
}, {
patch: oneChunkPatchInverted,
desc: "modified adding lines file with context to 4",
context: 4,
diff: `diff --git a/onechunk.txt b/onechunk.txt
index 0adddcde4fd38042c354518351820eb06c417c82..ab5eed5d4a2c33aeef67e0188ee79bed666bde6f 100644
--- a/onechunk.txt
+++ b/onechunk.txt
@@ -1,22 +1,26 @@
+A
B
C
D
E
F
G
+H
I
J
K
L
M
N
+Ñ
O
P
Q
R
S
T
+U
V
W
X
Y
`,
}, {
patch: oneChunkPatchInverted,
desc: "modified adding lines file with context to 0",
context: 0,
diff: `diff --git a/onechunk.txt b/onechunk.txt
index 0adddcde4fd38042c354518351820eb06c417c82..ab5eed5d4a2c33aeef67e0188ee79bed666bde6f 100644
--- a/onechunk.txt
+++ b/onechunk.txt
@@ -0,0 +1 @@
+A
@@ -6,0 +8 @@ G
+H
@@ -12,0 +15 @@ N
+Ñ
@@ -18,0 +22 @@ T
+U
`,
}, {
patch: testPatch{
message: "",
filePatches: []testFilePatch{{
from: &testFile{
mode: filemode.Regular,
path: "onechunk.txt",
seed: "B\nC\nD\nE\nF\nG\nI\nJ\nK\nL\nM\nN\nO\nP\nQ\nR\nS\nT\nV\nW\nX\nY\nZ",
},
to: &testFile{
mode: filemode.Regular,
path: "onechunk.txt",
seed: "B\nC\nD\nE\nF\nG\nI\nJ\nK\nL\nM\nN\nO\nP\nQ\nR\nS\nT\nV\nW\nX\nY\n",
},
chunks: []testChunk{{
content: "B\nC\nD\nE\nF\nG\nI\nJ\nK\nL\nM\nN\nO\nP\nQ\nR\nS\nT\nV\nW\nX\nY\n",
op: Equal,
}, {
content: "Z",
op: Delete,
}},
}},
},
desc: "remove last letter",
context: 0,
diff: `diff --git a/onechunk.txt b/onechunk.txt
index 0adddcde4fd38042c354518351820eb06c417c82..553ae669c7a9303cf848fcc749a2569228ac5309 100644
--- a/onechunk.txt
+++ b/onechunk.txt
@@ -23 +22,0 @@ Y
-Z
`,
}}
type testPatch struct {
message string
filePatches []testFilePatch
}
func (t testPatch) FilePatches() []FilePatch {
var result []FilePatch
for _, f := range t.filePatches {
result = append(result, f)
}
return result
}
func (t testPatch) Message() string {
return t.message
}
type testFilePatch struct {
from, to *testFile
chunks []testChunk
}
func (t testFilePatch) IsBinary() bool {
return len(t.chunks) == 0
}
func (t testFilePatch) Files() (File, File) {
// Go is amazing
switch {
case t.from == nil && t.to == nil:
return nil, nil
case t.from == nil:
return nil, t.to
case t.to == nil:
return t.from, nil
}
return t.from, t.to
}
func (t testFilePatch) Chunks() []Chunk {
var result []Chunk
for _, c := range t.chunks {
result = append(result, c)
}
return result
}
type testFile struct {
path string
mode filemode.FileMode
seed string
}
func (t testFile) Hash() plumbing.Hash {
return plumbing.ComputeHash(plumbing.BlobObject, []byte(t.seed))
}
func (t testFile) Mode() filemode.FileMode {
return t.mode
}
func (t testFile) Path() string {
return t.path
}
type testChunk struct {
content string
op Operation
}
func (t testChunk) Content() string {
return t.content
}
func (t testChunk) Type() Operation {
return t.op
}
type fixture struct {
desc string
context int
diff string
patch Patch
}
