btrfs-progs: tests: check the result log for critical warnings

Introduce a new function, check_test_results(), for
misc/fsck/convert/mkfs test cases.

This function is currently to catch warning message for subpage support,
but can be later expanded for other usages.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

tests/common

@@ -832,4 +832,17 @@ init_env()
 		echo "  convert: $TEST_ARGS_CONVERT" >> "$RESULTS"
 	fi
 }
+
+# Catch critical warning messages in test results
+check_test_results()
+{
+	local results="$1"
+	local testname="$2"
+
+	# Check subpage related warning
+	if grep -q "crrosses 64K page boundary" "$results"; then
+		_fail "found subpage related warning for case $testname"
+	fi
+}
+
 init_env

tests/convert-tests.sh

@@ -70,6 +70,7 @@ run_one_test() {
 			fi
 			_fail "test failed for case $testname"
 		fi
+		check_test_results "$RESULTS" "$testname"
 	else
 		_fail "custom test script not found"
 	fi

tests/fsck-tests.sh

@@ -64,6 +64,7 @@ run_one_test() {
 			fi
 			_fail "test failed for case $(basename $testname)"
 		fi
+		check_test_results "$RESULTS" "$testname"
 	else
 		# Type 1
 		check_all_images

tests/misc-tests.sh

@@ -66,6 +66,7 @@ do
 			fi
 			_fail "test failed for case $(basename $i)"
 		fi
+		check_test_results "$RESULTS" "$(basename $i)"
 	fi
 	cd "$TEST_TOP"
 done

tests/mkfs-tests.sh

@@ -61,6 +61,7 @@ do
 			fi
 			_fail "test failed for case $(basename $i)"
 		fi
+		check_test_results "$RESULTS" "$(basename $i)"
 	fi
 	cd "$TEST_TOP"
 done