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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325package patchutil
import ( "reflect" "testing")
func TestIsPatchValid(t *testing.T) { tests := []struct { name string patch string expected bool }{ { name: `empty patch`, patch: ``, expected: false, }, { name: `single line patch`, patch: `single line`, expected: false, }, { name: `valid diff patch`, patch: `diff --git a/file.txt b/file.txtindex abc..def 100644--- a/file.txt+++ b/file.txt@@ -1,3 +1,3 @@-old line+new line context`, expected: true, }, { name: `valid patch starting with ---`, patch: `--- a/file.txt+++ b/file.txt@@ -1,3 +1,3 @@-old line+new line context`, expected: true, }, { name: `valid patch starting with Index`, patch: `Index: file.txt==========--- a/file.txt+++ b/file.txt@@ -1,3 +1,3 @@-old line+new line context`, expected: true, }, { name: `valid patch starting with +++`, patch: `+++ b/file.txt--- a/file.txt@@ -1,3 +1,3 @@-old line+new line context`, expected: true, }, { name: `valid patch starting with @@`, patch: `@@ -1,3 +1,3 @@-old line+new line context`, expected: true, }, { name: `valid format patch`, patch: `From 3c5035488318164b81f60fe3adcd6c9199d76331 Mon Sep 17 00:00:00 2001From: Author <author@example.com>Date: Wed, 16 Apr 2025 11:01:00 +0300Subject: [PATCH] Example patch
diff --git a/file.txt b/file.txtindex 123456..789012 100644--- a/file.txt+++ b/file.txt@@ -1 +1 @@-old content+new content--2.48.1`, expected: true, }, { name: `invalid format patch`, patch: `From 1234567890123456789012345678901234567890 Mon Sep 17 00:00:00 2001From: Author <author@example.com>This is not a valid patch format`, expected: false, }, { name: `not a patch at all`, patch: `This isjust somerandom textthat isn't a patch`, expected: false, }, }
for _, tt := range tests { t.Run(tt.name, func(t *testing.T) { result := IsPatchValid(tt.patch) if result != tt.expected { t.Errorf("IsPatchValid() = %v, want %v", result, tt.expected) } }) }}
func TestSplitPatches(t *testing.T) { tests := []struct { name string input string expected []string }{ { name: "Empty input", input: "", expected: []string{}, }, { name: "No valid patches", input: "This is not a \nJust some random text", expected: []string{}, }, { name: "Single patch", input: `From 3c5035488318164b81f60fe3adcd6c9199d76331 Mon Sep 17 00:00:00 2001From: Author <author@example.com>Date: Wed, 16 Apr 2025 11:01:00 +0300Subject: [PATCH] Example patch
diff --git a/file.txt b/file.txtindex 123456..789012 100644--- a/file.txt+++ b/file.txt@@ -1 +1 @@-old content+new content--2.48.1`, expected: []string{ `From 3c5035488318164b81f60fe3adcd6c9199d76331 Mon Sep 17 00:00:00 2001From: Author <author@example.com>Date: Wed, 16 Apr 2025 11:01:00 +0300Subject: [PATCH] Example patch
diff --git a/file.txt b/file.txtindex 123456..789012 100644--- a/file.txt+++ b/file.txt@@ -1 +1 @@-old content+new content--2.48.1`, }, }, { name: "Two patches", input: `From 3c5035488318164b81f60fe3adcd6c9199d76331 Mon Sep 17 00:00:00 2001From: Author <author@example.com>Date: Wed, 16 Apr 2025 11:01:00 +0300Subject: [PATCH 1/2] First patch
diff --git a/file1.txt b/file1.txtindex 123456..789012 100644--- a/file1.txt+++ b/file1.txt@@ -1 +1 @@-old content+new content--2.48.1From a9529f3b3a653329a5268f0f4067225480207e3c Mon Sep 17 00:00:00 2001From: Author <author@example.com>Date: Wed, 16 Apr 2025 11:03:11 +0300Subject: [PATCH 2/2] Second patch
diff --git a/file2.txt b/file2.txtindex abcdef..ghijkl 100644--- a/file2.txt+++ b/file2.txt@@ -1 +1 @@-foo bar+baz qux--2.48.1`, expected: []string{ `From 3c5035488318164b81f60fe3adcd6c9199d76331 Mon Sep 17 00:00:00 2001From: Author <author@example.com>Date: Wed, 16 Apr 2025 11:01:00 +0300Subject: [PATCH 1/2] First patch
diff --git a/file1.txt b/file1.txtindex 123456..789012 100644--- a/file1.txt+++ b/file1.txt@@ -1 +1 @@-old content+new content--2.48.1`, `From a9529f3b3a653329a5268f0f4067225480207e3c Mon Sep 17 00:00:00 2001From: Author <author@example.com>Date: Wed, 16 Apr 2025 11:03:11 +0300Subject: [PATCH 2/2] Second patch
diff --git a/file2.txt b/file2.txtindex abcdef..ghijkl 100644--- a/file2.txt+++ b/file2.txt@@ -1 +1 @@-foo bar+baz qux--2.48.1`, }, }, { name: "Patches with additional text between them", input: `Some text before the patches
From 3c5035488318164b81f60fe3adcd6c9199d76331 Mon Sep 17 00:00:00 2001From: Author <author@example.com>Subject: [PATCH] First patch
diff content here--2.48.1
Some text between patches
From a9529f3b3a653329a5268f0f4067225480207e3c Mon Sep 17 00:00:00 2001From: Author <author@example.com>Subject: [PATCH] Second patch
more diff content--2.48.1
Text after patches`, expected: []string{ `From 3c5035488318164b81f60fe3adcd6c9199d76331 Mon Sep 17 00:00:00 2001From: Author <author@example.com>Subject: [PATCH] First patch
diff content here--2.48.1
Some text between patches`, `From a9529f3b3a653329a5268f0f4067225480207e3c Mon Sep 17 00:00:00 2001From: Author <author@example.com>Subject: [PATCH] Second patch
more diff content--2.48.1
Text after patches`, }, }, { name: "Patches with whitespace padding", input: `
From 3c5035488318164b81f60fe3adcd6c9199d76331 Mon Sep 17 00:00:00 2001From: Author <author@example.com>Subject: Patch
content--2.48.1
From a9529f3b3a653329a5268f0f4067225480207e3c Mon Sep 17 00:00:00 2001From: Author <author@example.com>Subject: Another patch
content--2.48.1 `, expected: []string{ `From 3c5035488318164b81f60fe3adcd6c9199d76331 Mon Sep 17 00:00:00 2001From: Author <author@example.com>Subject: Patch
content--2.48.1`, `From a9529f3b3a653329a5268f0f4067225480207e3c Mon Sep 17 00:00:00 2001From: Author <author@example.com>Subject: Another patch
content--2.48.1`, }, }, }
for _, tt := range tests { t.Run(tt.name, func(t *testing.T) { result := splitFormatPatch(tt.input) if !reflect.DeepEqual(result, tt.expected) { t.Errorf("splitPatches() = %v, want %v", result, tt.expected) } }) }}