#
# Copyright (c) 2016 D. Richard Hipp
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the Simplified BSD License (also
# known as the "2-Clause License" or "FreeBSD License".)
#
# This program is distributed in the hope that it will be useful,
# but without any warranty; without even the implied warranty of
# merchantability or fitness for a particular purpose.
#
# Author contact information:
#   drh@hwaci.com
#   http://www.hwaci.com/drh/
#
############################################################################
#
# Tests for the diff command.
#

require_no_open_checkout

test_setup; set rootDir [file normalize [pwd]]

###################################
# Tests of binary file detection. #
###################################

file mkdir .fossil-settings
write_file [file join .fossil-settings binary-glob] "*"

write_file file0.dat ""; # no content.
write_file file1.dat "test file 1 (one line no term)."
write_file file2.dat "test file 2 (NUL character).\0"
write_file file3.dat "test file 3 (long line).[string repeat x 32768]"
write_file file4.dat "test file 4 (long line).[string repeat y 32768]\ntwo"
write_file file5.dat "[string repeat z 32768]\ntest file 5 (long line)."

fossil add $rootDir
fossil commit -m "c1"

###############################################################################

fossil ls
test diff-ls-1 {[normalize_result] eq \
"file0.dat\nfile1.dat\nfile2.dat\nfile3.dat\nfile4.dat\nfile5.dat"}

###############################################################################

write_file file0.dat "\0"
fossil diff file0.dat

test diff-file0-1 {[normalize_result] eq {Index: file0.dat
==================================================================
--- file0.dat
+++ file0.dat
cannot compute difference between binary files}}

###############################################################################

write_file file1.dat [string repeat z 32768]
fossil diff file1.dat

test diff-file1-1 {[normalize_result] eq {Index: file1.dat
==================================================================
--- file1.dat
+++ file1.dat
cannot compute difference between binary files}}

###############################################################################

write_file file2.dat "test file 2 (no NUL character)."
fossil diff file2.dat

test diff-file2-1 {[normalize_result] eq {Index: file2.dat
==================================================================
--- file2.dat
+++ file2.dat
cannot compute difference between binary files}}

###############################################################################

write_file file3.dat "test file 3 (not a long line)."
fossil diff file3.dat

test diff-file3-1 {[normalize_result] eq {Index: file3.dat
==================================================================
--- file3.dat
+++ file3.dat
cannot compute difference between binary files}}

###############################################################################

write_file file4.dat "test file 4 (not a long line).\ntwo"
fossil diff file4.dat

test diff-file4-1 {[normalize_result] eq {Index: file4.dat
==================================================================
--- file4.dat
+++ file4.dat
cannot compute difference between binary files}}

###############################################################################

write_file file5.dat "[string repeat 0 16]\ntest file 5 (not a long line)."
fossil diff file5.dat

test diff-file5-1 {[normalize_result] eq {Index: file5.dat
==================================================================
--- file5.dat
+++ file5.dat
cannot compute difference between binary files}}

###############################################################################

write_file file6a.dat "{\n \"abc\": {\n  \"def\": false,\n  \"ghi\": false\n }\n}\n"
write_file file6b.dat "{\n \"abc\": {\n  \"def\": false,\n  \"ghi\": false\n },\n \"jkl\": {\n  \"mno\": {\n   \"pqr\": false\n  }\n }\n}\n"
fossil xdiff -y -W 16 file6a.dat file6b.dat
test diff-file-6-1 {[normalize_result] eq {========== file6a.dat ===== versus ===== file6b.dat =====
     1 {                       1 {
     2  "abc": {               2  "abc": {
     3   "def": false,         3   "def": false,
     4   "ghi": false          4   "ghi": false
                        >      5  },
                        >      6  "jkl": {
                        >      7   "mno": {
                        >      8    "pqr": false
                        >      9   }
     5  }                     10  }
     6 }                      11 }}}

###############################################################################

fossil rm file1.dat
fossil diff -v file1.dat

test diff-deleted-file-1 {[normalize_result] eq {DELETED  file1.dat
Index: file1.dat
==================================================================
--- file1.dat
+++ /dev/null
@@ -1,1 +0,0 @@
-test file 1 (one line no term).}}

###############################################################################

write_file file6.dat "test file 6 (one line no term)."
fossil add file6.dat

fossil diff -v file6.dat

test diff-added-file-1 {[normalize_result] eq {ADDED    file6.dat
Index: file6.dat
==================================================================
--- /dev/null
+++ file6.dat
@@ -0,0 +1,1 @@
+test file 6 (one line no term).}}

###############################################################################

test_cleanup