Add missing-section tests to context-format test case

* tests/context-format: Add tests with a missing pattern and a missing
replacement section in a hunk.  Patch should fill in the missing
sections from the existing sections.

1 files changed, 84 insertions, 2 deletions

diff --git a/tests/context-format b/tests/context-format
index 8143448..b3276ff 100644
--- a/tests/context-format
+++ b/tests/context-format
@@ -11,6 +11,46 @@ use_tmpdir
 
 # ==============================================================
 
+printf "%s\n" 1 2 4 5 > a
+cat > ab.diff <<EOF
+*** a
+--- b
+***************
+*** 1,4 ****
+--- 1,5 ----
+  1
+  2
++ 3
+  4
+  5
+EOF
+
+check 'patch < ab.diff' <<EOF
+patching file a
+EOF
+
+printf "%s\n" 1 2 3 4 5 > a
+cat > ab.diff <<EOF
+*** a
+--- b
+***************
+*** 1,5 ****
+  1
+  2
+- 3
+  4
+  5
+--- 1,4 ----
+EOF
+
+check 'patch < ab.diff' <<EOF
+patching file a
+EOF
+
+# --------------------------------------------------------------
+
+printf "%s\n" a a a a a b a a a a a > a
+
 cat > ab.diff <<EOF
 *** a
 --- b
@@ -20,11 +60,33 @@ cat > ab.diff <<EOF
 --- 5 ----
 EOF
 
-printf "%s\n" a a a a a b a a a a a > a
 check 'patch < ab.diff' <<EOF
 patching file a
 EOF
 
+check 'echo `cat a`' <<EOF
+a a a a a a a a a a
+EOF
+
+cat > ba.diff <<EOF
+*** b
+--- a
+***************
+*** 5 ****
+--- 6 ----
++ b
+EOF
+
+check 'patch < ba.diff' <<EOF
+patching file a
+EOF
+
+check 'echo `cat a`' <<EOF
+a a a a a b a a a a a
+EOF
+
+printf "%s\n" a a a a a a a a a a b > a
+
 cat > ab.diff <<EOF
 *** a
 --- b
@@ -34,7 +96,27 @@ cat > ab.diff <<EOF
 --- 10 ----
 EOF
 
-printf "%s\n" a a a a a a a a a a b > a
 check 'patch < ab.diff' <<EOF
 patching file a
 EOF
+
+check 'echo `cat a`' <<EOF
+a a a a a a a a a a
+EOF
+
+cat > ba.diff <<EOF
+*** b
+--- a
+***************
+*** 10 ****
+--- 11 ----
++ b
+EOF
+
+check 'patch < ba.diff' <<EOF
+patching file a
+EOF
+
+check 'echo `cat a`' <<EOF
+a a a a a a a a a a b
+EOF