test: new test-lib function to test for equality between files

[notmuch] / test / test-lib.sh

diff --git a/test/test-lib.sh b/test/test-lib.sh
index 7fed29ccaa21128258e33fd4626d474f6f56decc..dc2972f256a00456b0649911b56719586f553ddd 100755 (executable)
--- a/test/test-lib.sh
+++ b/test/test-lib.sh
@@ -441,6 +441,29 @@ test_expect_equal ()
     fi
 }
 
+test_expect_equal_file ()
+{
+       exec 1>&6 2>&7          # Restore stdout and stderr
+       inside_subtest=
+       test "$#" = 3 && { prereq=$1; shift; } || prereq=
+       test "$#" = 2 ||
+       error "bug in the test script: not 2 or 3 parameters to test_expect_equal"
+
+       output="$1"
+       expected="$2"
+       if ! test_skip "$@"
+       then
+               if diff -q "$expected" "$output" >/dev/null ; then
+                       test_ok_ "$test_subtest_name"
+               else
+                       testname=$this_test.$test_count
+                       mv "$output" $testname.output
+                       mv "$expected" $testname.expected
+                       test_failure_ "$test_subtest_name" "$(diff -u $testname.expected $testname.output)"
+               fi
+    fi
+}
+
 test_expect_equal_failure ()
 {
        exec 1>&6 2>&7          # Restore stdout and stderr