test: add integration test for remove command

tests/07-remove.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+
+test_description='Test the remove command'
+
+WHEREAMI=$(dirname "$(realpath "$0")")
+. $WHEREAMI/setup.sh
+
+test_expect_success 'cabin remove tbb mydep toml11' '
+    test_when_finished "rm -rf remove_test" &&
+    "$CABIN_BIN" new remove_test &&
+    cd remove_test &&
+    echo "[dependencies]" >> cabin.toml &&
+    echo "tbb = {}" >> cabin.toml &&
+    echo "toml11 = {}" >> cabin.toml &&
+    (
+        "$CABIN_BIN" remove tbb mydep toml11 >actual 2>&1 &&
+        ! grep -q "tbb" cabin.toml &&
+        ! grep -q "toml11"  cabin.toml
+    ) &&
+    cat >expected <<-EOF &&
+Warning: Dependency \`mydep\` not found in $WHEREAMI/trash directory.07-remove.sh/remove_test/cabin.toml
+     Removed tbb, toml11 from $WHEREAMI/trash directory.07-remove.sh/remove_test/cabin.toml
+EOF
+    test_cmp expected actual
+'
+test_done