Do not collapse empty lines in snippets (#595)

Fixes #539

src/parser.rs

@@ -187,6 +187,9 @@ pub fn read_lines(
         if !item.tags.is_empty() && !item.comment.is_empty() {}
         // blank
         if line.is_empty() {
+            if !(&item.snippet).is_empty() {
+                item.snippet.push_str(writer::LINE_SEPARATOR);
+            }
         }
         // tag
         else if line.starts_with('%') {

src/writer.rs

@@ -46,7 +46,7 @@ pub fn write(item: &Item) -> String {
             tags = item.tags,
             comment = item.comment,
             delimiter = DELIMITER,
-            snippet = &item.snippet,
+            snippet = &item.snippet.trim_end_matches(LINE_SEPARATOR),
             file_index = item.file_index,
         )
 }

tests/core.bash

@@ -3,6 +3,8 @@
 
 source "${NAVI_HOME}/scripts/install"
 
+NEWLINE_CHAR="\036"
+
 PASSED=0
 FAILED=0
 SKIPPED=0
@@ -38,12 +40,17 @@ test::run() {
    "$@" && test::success || test::fail
 }
 
+test::_escape() {
+	tr '\n' "$NEWLINE_CHAR" | sed -E "s/[\s$(printf "$NEWLINE_CHAR") ]+$//g"
+}
+
 test::equals() {
    local -r actual="$(cat)"
    local -r expected="$(echo "${1:-}")"
 	
-   local -r actual2="$(echo "$actual" | xargs | sed -E 's/\s/ /g')"
-   local -r expected2="$(echo "$expected" | xargs | sed -E 's/\s/ /g')"
+
+   local -r actual2="$(echo "$actual" | test::_escape)"
+   local -r expected2="$(echo "$expected" | test::_escape)"
 
    if [[ "$actual2" != "$expected2" ]]; then
       log::error "Expected '${expected}' but got '${actual}'"

tests/no_prompt_cheats/cases.cheat

@@ -8,14 +8,23 @@ echo "foo"
 # map -> "_foo_"
 echo "<map1>"
 
+# expand -> "foo"
+echo "<expand1>"
+
 # duplicated lines -> "foo\nlorem ipsum\nlorem ipsum\nbaz"
 echo foo
 echo lorem ipsum
 echo lorem ipsum
 echo baz
 
-# expand -> "foo"
-echo "<expand1>"
+# empty line -> "foo\n\n\nbar"
+echo "$(cat <<EOF
+foo
+
+
+bar
+EOF
+)"
 
 # sed with replacement -> "172.17.0.2"
 echo "8.8.8.8 via 172.17.0.1 dev eth0  src 172.17.0.2" | sed -E 's/.*src ([0-9.]+).*/\1/p' | head -n1

tests/run

@@ -36,7 +36,7 @@ _get_all_tests() {
    cat "${TEST_CHEAT_PATH}/cases.cheat" \
       | grep '^#' \
       | grep ' ->' \
-      | sed 's/\\n/ /g' \
+      | sed 's/\\n/'"$(printf "$NEWLINE_CHAR")"'/g' \
       | sed -E 's/# (.*) -> "(.*)"/\1|\2/g'
 }
 
@@ -144,7 +144,7 @@ IFS=$'\n'
 for i in $(_get_tests "$filter"); do
    IFS="$ifs"
    query="$(echo "$i" | cut -d'|' -f1)"
-   expected="$(echo "$i" | cut -d'|' -f2)"
+   expected="$(echo "$i" | tr "$NEWLINE_CHAR" '\n' | cut -d'|' -f2)"
    test::run "$query" _navi_cases_test "$query" "$expected"
 done