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diff --git a/tests/t0108-rawdiff.sh b/tests/t0108-rawdiff.sh
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+#!/bin/sh
+
+# Checks the rawdiff page, which serves a diff as plain text with no markup
+# around it so that the result can be fed straight to patch. Every test runs
+# the git command the page is meant to mirror and compares the two byte for
+# byte, covering an ordinary commit, the initial commit that has no parent,
+# and a range spanning several commits.
+
+test_description='Check content on rawdiff page'
+. ./setup.sh
+
+test_expect_success 'generate foo/rawdiff' '
+	cgit_query "url=foo/rawdiff" >tmp
+'
+
+# cgit writes its CGI headers and the blank line that ends them ahead of the
+# body while git writes only the diff, so the head of the page comes off
+# before the two are compared.
+test_expect_success 'compare with output of git-diff(1)' '
+	git --git-dir="$PWD/repos/foo/.git" diff HEAD^.. >tmp2 &&
+	strip_headers <tmp >tmp_ &&
+	cmp tmp_ tmp2
+'
+
+test_expect_success 'find initial commit' '
+	root=$(git --git-dir="$PWD/repos/foo/.git" rev-list --max-parents=0 HEAD)
+'
+
+test_expect_success 'generate diff for initial commit' '
+	cgit_query "url=foo/rawdiff&id=$root" >tmp
+'
+
+test_expect_success 'compare with output of git-diff-tree(1)' '
+	git --git-dir="$PWD/repos/foo/.git" diff-tree -p --no-commit-id --root "$root" >tmp2 &&
+	strip_headers <tmp >tmp_ &&
+	cmp tmp_ tmp2
+'
+
+test_expect_success 'generate diff for multiple commits' '
+	id=$(git --git-dir="$PWD/repos/foo/.git" rev-parse HEAD) &&
+	id2=$(git --git-dir="$PWD/repos/foo/.git" rev-parse HEAD~3) &&
+	cgit_query "url=foo/rawdiff&id=$id&id2=$id2" >tmp
+'
+
+test_expect_success 'compare with output of git-diff(1)' '
+	git --git-dir="$PWD/repos/foo/.git" diff HEAD~3..HEAD >tmp2 &&
+	strip_headers <tmp >tmp_ &&
+	cmp tmp_ tmp2
+'
+
+test_done