Add "new" command implementation

tests/test__zk_new.sh

@@ -12,6 +12,9 @@ teardown() {
 }
 
 test__zk_new_creates_file_in_correct_directory() {
+    fake "$EDITOR" echo ""
+    fake vi echo ""
+
     export ZKDIR="$TMP_ZETTELKASTEN"
     filename="aaaaaaaaaaaaaa"
     fake date "echo $filename"
@@ -20,3 +23,34 @@ test__zk_new_creates_file_in_correct_directory() {
 
     assert "test -e $TMP_ZETTELKASTEN/$filename"
 }
+
+test__zk_new_runs_EDITOR_if_EDITOR_is_set() {
+    export EDITOR="nano"
+    # shellcheck disable=SC2016
+    fake "$EDITOR" echo '$EDITOR ${FAKE_PARAMS[@]}'
+
+    export ZKDIR="$TMP_ZETTELKASTEN"
+    filename="aaaaaaaaaaaaaa"
+    fake date "echo $filename"
+    expected="$EDITOR $TMP_ZETTELKASTEN/$filename"
+
+    result="$(_zk_new)"
+
+    assert_equals "$expected" "$result"
+}
+
+test__zk_new_runs_vi_if_EDITOR_is_not_set() {
+    export EDITOR=""
+    # shellcheck disable=SC2016
+    fake vi echo 'vi ${FAKE_PARAMS[@]}'
+
+    export ZKDIR="$TMP_ZETTELKASTEN"
+    filename="aaaaaaaaaaaaaa"
+    fake date "echo $filename"
+    expected="vi $TMP_ZETTELKASTEN/$filename"
+
+    result="$(_zk_new)"
+
+    assert_equals "$expected" "$result"
+}
+

zk

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 ZKDIR="$HOME/.local/share/zk/"
-COMMANDS='list new delete'
+COMMANDS='list new'
 
 get_command() {
 	commands="$1"
@@ -27,6 +27,12 @@ _zk_list() {
 _zk_new() {
 	filename="$(_zk_isosec)"
 	touch "$ZKDIR/$filename"
+
+	if test -n "$EDITOR"; then
+		$EDITOR "$ZKDIR/$filename"
+	else
+		vi "$ZKDIR/$filename"
+	fi
 }
 
 main() {