Feat(cli): Finished all functionalities

- passed all tests

.github/workflows/rust.yml

@@ -2,21 +2,22 @@ name: Rust
 
 on:
   push:
-    branches: [ "master" ]
+    branches: ["master"]
   pull_request:
-    branches: [ "master" ]
+    branches: ["master"]
 
 env:
   CARGO_TERM_COLOR: always
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
-    - name: Build
-      run: cargo build --verbose
-    - name: Run tests
-      run: cargo test --verbose
+      - uses: actions/checkout@v3
+      - name: Build
+        run: cargo build --verbose
+      - name: Run pre tests
+        run: ./mk-outs.sh
+      - name: Run tests
+        run: cargo test --verbose

Cargo.toml

@@ -14,3 +14,4 @@ clap = { version = "4", features = ["cargo", "help"] }
 assert_cmd = "2.0.12"
 predicates = "3.0.3"
 rand = "0.8.5"
+rstest = "0.18.1"

mk-outs.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+set -u
+
+ROOT="tests/inputs"
+OUT_DIR="tests/expected"
+
+[[ ! -d "$OUT_DIR" ]] && mkdir -p "$OUT_DIR"
+
+EMPTY="$ROOT/empty.txt"
+FOX="$ROOT/fox.txt"
+SPIDERS="$ROOT/spiders.txt"
+BUSTLE="$ROOT/the-bustle.txt"
+ALL="$EMPTY $FOX $SPIDERS $BUSTLE"
+
+for FILE in $ALL; do
+    BASENAME=$(basename "$FILE")
+    cat    $FILE > ${OUT_DIR}/${BASENAME}.out
+    cat -n $FILE > ${OUT_DIR}/${BASENAME}.n.out
+    cat -b $FILE > ${OUT_DIR}/${BASENAME}.b.out
+done
+
+cat    $ALL > $OUT_DIR/all.out
+cat -n $ALL > $OUT_DIR/all.n.out
+cat -b $ALL > $OUT_DIR/all.b.out
+
+cat    < $BUSTLE > $OUT_DIR/$(basename $BUSTLE).stdin.out
+cat -n < $BUSTLE > $OUT_DIR/$(basename $BUSTLE).n.stdin.out
+cat -b < $BUSTLE > $OUT_DIR/$(basename $BUSTLE).b.stdin.out