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w7/student_tests.sh

+#!/usr/bin/env bats
+
+# File: student_tests.sh
+# 
+# Create your unit tests suit in this file
+
+@test "Example: check ls runs without errors" {
+    run ./dsh <<EOF                
+ls
+EOF
+
+    # Assertions
+    [ "$status" -eq 0 ]
+}
+
+# Test: Basic command execution
+@test "Basic command execution: echo" {
+    run ./dsh <<EOF
+echo Hello World
+EOF
+    output=$(echo "$output" | tr -d '\r')
+    echo "Captured output: $output"  # Debugging
+    [ "$status" -eq 0 ]
+    [[ "$output" == *"Hello World"* ]]
+}
+
+# Test: Input Redirection (`<`)
+@test "Input Redirection: wc -w < test_input.txt" {
+    echo "Hello World" > test_input.txt
+    run ./dsh <<EOF
+wc -w < test_input.txt
+EOF
+    output=$(echo "$output" | tr -d '\r')
+    echo "Captured output: $output"  # Debugging
+    [ "$status" -eq 0 ]
+    [[ "$output" == *"2"* ]]
+    rm -f test_input.txt
+}
+
+
+
+# Test: Built-in Commands (`cd`)
+@test "Built-in command: cd" {
+    run ./dsh <<EOF
+cd /tmp
+pwd
+EOF
+    [ "$status" -eq 0 ]
+    [[ "$output" =~ "/tmp" ]]
+}
+
+# Test: Built-in Commands (`exit`)
+@test "Built-in command: exit" {
+    run ./dsh <<EOF
+exit
+EOF
+    [ "$status" -eq 0 ]
+}
+
+
+
+@test "Output Redirection: echo Hello > test_output.txt" {
+    rm -f test_output.txt  # Ensure file does not exist before test
+    run ./dsh <<EOF
+echo Hello > test_output.txt
+EOF
+    sleep 1  # Give time for file creation
+    echo "Debug: Checking test_output.txt after execution..."
+    ls -l test_output.txt
+    [ "$status" -eq 0 ]
+    if [ ! -f test_output.txt ]; then
+        echo "Test Failed: Output file test_output.txt does not exist!"
+        exit 1
+    fi
+    trimmed_output=$(cat test_output.txt | tr -d '\r')
+    echo "Captured output: $trimmed_output"
+    [[ "$trimmed_output" == *"Hello"* ]]
+    rm -f test_output.txt
+}
+
+
+# Test: Append Redirection (`>>`)
+@test "Append Redirection: echo Hello > test_append.txt && echo World >> test_append.txt" {
+    rm -f test_append.txt  # Ensure file does not exist
+    run ./dsh <<EOF
+echo Hello > test_append.txt
+echo World >> test_append.txt
+EOF
+    sleep 1  # Ensure file is written
+    [ "$status" -eq 0 ]
+    [ -f test_append.txt ]  # Ensure file exists
+    trimmed_output=$(cat test_append.txt | tr -d '\r')
+    echo "Captured output: $trimmed_output"  # Debugging
+    [[ "$trimmed_output" == *"Hello"* && "$trimmed_output" == *"World"* ]]
+    rm -f test_append.txt
+}
+
+# Extra Credit: Combining Pipes and Redirection
+@test "Extra Credit: ls | grep .c > output.txt" {
+    rm -f output.txt  # Ensure file does not exist
+    run ./dsh <<EOF
+ls | grep .c > output.txt
+EOF
+    sleep 1  # Ensure file is written
+    [ "$status" -eq 0 ]
+    [ -f output.txt ]  # Ensure file exists
+    trimmed_output=$(cat output.txt | tr -d '\r')
+    echo "Captured output: $trimmed_output"  # Debugging
+    [[ "$trimmed_output" == *"dshlib.c"* ]]
+    rm -f output.txt
+}