1 file changed, 74 insertions, 14 deletions
diff --git a/tests/t0107-diff.sh b/tests/t0107-diff.sh
index 6caf539..d0296d5 100755
--- a/tests/t0107-diff.sh
+++ b/tests/t0107-diff.sh
@@ -1,30 +1,29 @@
 #!/bin/sh
 
 # The diff page, unified or side-by-side under dt=1. The first checks read
-# the markup for one added file in the fixture repository. The rest build
-# repositories of their own, shaped for the side-by-side renderer's two
-# trickiest cases, a hunk covering a single line and a file where every
-# line changed.
+# the markup for one added file in the fixture repository, then a path, a
+# range, the root commit and a commit holding every kind of change the
+# unified view words differently. The rest build repositories of their own,
+# shaped for the side-by-side renderer's line numbers and character marking,
+# for the options a request or the config sets, and for a renamed or
+# followed file.
 
 test_description='Check content on diff page'
 . ./setup.sh
 
-test_expect_success 'generate foo/diff' 'cgit_url "foo/diff" >tmp'
-test_expect_success 'find diff header' 'grep "a/file-5 b/file-5" tmp'
-test_expect_success 'find blob link' 'grep "<a href=./foo/tree/file-5?id=" tmp'
-test_expect_success 'find added file' 'grep "new file mode 100644" tmp'
-
-test_expect_success 'find hunk header' '
-	grep "<div class=.hunk.>@@ -0,0 +1 @@</div>" tmp
-'
-
-test_expect_success 'find added line' '
+test_expect_success 'an added file shows its header, links and line' '
+	cgit_ok_url "foo/diff" >tmp &&
+	grep "a/file-5 b/file-5" tmp &&
+	grep "<a href=./foo/tree/file-5?id=" tmp &&
+	grep "new file mode 100644" tmp &&
+	grep "<div class=.hunk.>@@ -0,0 +1 @@</div>" tmp &&
 	grep "<div class=.add.>+5</div>" tmp
 '
 
 # The unified diff sits in a single cell, which holds the files together
 # rather than tabulating them, so a screen reader is told it is layout.
 test_expect_success 'the unified diff table is read as layout' '
+	cgit_ok_url "foo/diff" >tmp &&
 	grep "<table class=.diff. role=.presentation.>" tmp
 '
 
@@ -33,11 +32,72 @@ test_expect_success 'the unified diff table is read as layout' '
 test_expect_success 'a tree on either side is named as the request gave it' '
 	tree=$(git -C repos/foo rev-parse --short HEAD^{tree}) &&
 	cgit_url "foo/diff/&id=$tree" >tmp &&
+	grep "^Status: 404" tmp &&
 	grep "<div class=.error.>Not a commit: $tree</div>" tmp &&
 	cgit_url "foo/diff/&id2=$tree" >tmp &&
+	grep "^Status: 404" tmp &&
 	grep "<div class=.error.>Not a commit: $tree</div>" tmp
 '
 
+test_expect_success 'a path limits the diff and the stat says so' '
+	cgit_ok_url "foo/diff/file-5" >tmp &&
+	grep "Diffstat</a> (limited to .file-5.)</div>" tmp &&
+	grep "diff --git a/file-5 b/file-5" tmp
+'
+
+test_expect_success 'a diff between two named commits spans both' '
+	id=$(git -C repos/foo rev-parse HEAD) &&
+	id2=$(git -C repos/foo rev-parse HEAD~2) &&
+	cgit_ok_url "foo/diff&id=$id&id2=$id2" >tmp &&
+	grep "diff --git a/file-4 b/file-4" tmp &&
+	grep "diff --git a/file-5 b/file-5" tmp &&
+	grep "<div class=.diffstat-summary.>2 files changed, 2 insertions, 0 deletions</div>" tmp
+'
+
+test_expect_success 'the root commit is diffed against nothing' '
+	root=$(git -C repos/foo rev-list --max-parents=0 HEAD) &&
+	cgit_ok_url "foo/diff&id=$root" >tmp &&
+	grep "diff --git a/file-1 b/file-1<br>new file mode 100644" tmp &&
+	grep "<div class=.diffstat-summary.>1 file changed, 1 insertion, 0 deletions</div>" tmp
+'
+
+# One commit deletes a file, changes the mode of another, changes a binary
+# file and moves a submodule to another commit. The changes are staged one by
+# one, since commit -a would take the submodule for deleted.
+test_expect_success 'set up a commit of every kind of change' '
+	mkrepo repos/kinds 1 &&
+	(
+		cd repos/kinds &&
+		one=$(git rev-parse HEAD) &&
+		echo gone >gone.txt &&
+		echo mode >mode.sh &&
+		printf "\000old" >bin.dat &&
+		git add gone.txt mode.sh bin.dat &&
+		git update-index --add --cacheinfo 160000,$one,sub &&
+		git commit -m "add the files" &&
+		two=$(git rev-parse HEAD) &&
+		git rm -q gone.txt &&
+		git update-index --chmod=+x mode.sh &&
+		printf "\000new" >bin.dat &&
+		git add bin.dat &&
+		git update-index --cacheinfo 160000,$two,sub &&
+		git commit -m "change the files"
+	) &&
+	cgitrc_repo kindsrc kinds
+'
+
+test_expect_success 'each kind of change is worded as git words it' '
+	one=$(git -C repos/kinds rev-parse HEAD~2) &&
+	two=$(git -C repos/kinds rev-parse HEAD~1) &&
+	cgit_ok kindsrc "url=kinds/diff/" >tmp &&
+	grep "diff --git a/gone.txt b/gone.txt<br>deleted file mode 100644" tmp &&
+	grep "<td class=.mode.>-rwxr-xr-x<span class=.modechange.>\[-rw-r--r--\]</span></td>" tmp &&
+	grep "<br>index [0-9a-f]*\.\.[0-9a-f]* 100644\.\.100755<br>" tmp &&
+	grep "<td class=.right.>bin</td><td class=.graph.>4 -> 4 bytes</td>" tmp &&
+	grep "Binary files differ" tmp &&
+	grep "<div class=.del.>-Subproject $one</div><div class=.add.>+Subproject $two</div>" tmp
+'
+
 # git writes a hunk length only when the hunk spans more than one line, so the
 # header for a single line reads "@@ -1 +1 @@" with no comma in it. Requiring
 # that comma left those hunks numbered from zero, which dropped the line