Wire up "rm" subcommand

Makefile

@@ -1,5 +1,7 @@
 test:
 	bash_unit ./tests/test_*.sh
+runtests:
+	ls -1 zk tests/* | entr -c bash_unit ./tests/test_*.sh
 install:
 	test -d ~/.local/bin/ || mkdir -p ~/.local/bin/
 	cp zk ~/.local/bin/zk

tests/test__zk_rm.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+TMP_ZETTELKASTEN=""
+
+setup() {
+    source ../zk
+
+    TMP_ZETTELKASTEN="$(mktemp -d)"
+}
+
+teardown() {
+	rm -rf "$TMP_ZETTELKASTEN"
+}
+
+test__zk_rm_gives_error_when_no_zettel_id_given() {
+    # shellcheck disable=SC2016
+    #fake rm 'echo'
+
+    assert_status_code 1 '_zk_rm'
+}
+
+test__zk_rm_gives_error_when_nonexistent_zettel_id_given() {
+    export ZKDIR="$TMP_ZETTELKASTEN"
+    zettel_id="11111111111111"
+
+    assert_status_code 2 '_zk_rm $zettel_id'
+}
+
+test__zk_rm_succeeds_when_existent_zettel_id_given() {
+    export ZKDIR="$TMP_ZETTELKASTEN"
+    zettel_id="11111111111111"
+    touch "$ZKDIR/$zettel_id"
+
+    assert_status_code 0 '_zk_rm 11111111111111'
+}
+
+test__zk_rm_removes_file_when_existent_zettel_id_given() {
+    export ZKDIR="$TMP_ZETTELKASTEN"
+    zettel_id="11111111111111"
+    echo testing >>  "$ZKDIR/$zettel_id"
+
+    _zk_rm "$zettel_id"
+
+    assert_fails 'test -f "$ZKDIR/$zettel_id"'
+}

tests/test_get_command.sh

@@ -52,6 +52,15 @@ test_get_command_returns_edit_for_substring() {
 	done
 }
 
+test_get_command_returns_edit_for_substring() {
+	expected="rm"
+
+	for arg in r rm; do
+		result="$(get_command "$ZKCOMMANDS" "$arg")"
+		assert_equals "$expected" "$result"
+	done
+}
+
 test_get_command_does_not_return_match_unless_at_start_of_command_string() {
 	commands="delete"
 	expected=""

tests/test_main.sh

@@ -48,6 +48,18 @@ test_main_calls_edit_when_edit_command_passed() {
 	assert_equals "$expected" "$result"
 }
 
+test_main_calls_rm_when_rm_command_passed() {
+	fake check_zkdir test
+	expected="_zk_rm"
+	fake get_command 'echo rm'
+	fake _zk_rm "echo $expected"
+
+	result="$(main)"
+
+	assert_equals "$expected" "$result"
+}
+
+
 test_main_errors_if_unrecognized_command_given() {
 	fake check_zkdir test
 	fake get_command echo ""

zk

@@ -3,7 +3,7 @@
 set -e
 
 ZKDIR="$HOME/.local/share/zk/"
-ZKCOMMANDS='list search new edit'
+ZKCOMMANDS='list search new edit rm'
 
 check_zkdir() {
 	if ! test -d "$ZKDIR"; then
@@ -63,6 +63,20 @@ _zk_edit() {
 	fi
 }
 
+_zk_rm() {
+	if test -z "$1"; then
+		echo "zk rm: no zettel id given" 1>&2
+		exit 1
+	fi
+
+	if ! find "$ZKDIR" -name "$1" | grep .; then
+		echo "zk rm: zettel "$1" not found" 1>&2
+		exit 2
+	fi
+
+	rm "$ZKDIR/$1"
+}
+
 main() {
 	check_zkdir