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w8/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
+    [ "$status" -eq 0 ]
+}
+
+
+# Location of the compiled dsh executable
+DSH_EXEC="./dsh"
+
+# Server settings
+SERVER_IP="127.0.0.1"
+SERVER_PORT="5678"
+
+# Start the server in the background
+setup() {
+    # Kill any existing dsh server instances
+    pkill -f "$DSH_EXEC -s" || true
+
+    # Start the server in the background
+    $DSH_EXEC -s -i 0.0.0.0 -p $SERVER_PORT > server_output.log 2>&1 &
+    sleep 1  # Give the server some time to start
+}
+
+# Stop the server after tests
+teardown() {
+    pkill -f "$DSH_EXEC -s" || true
+}
+
+@test "Basic command execution" {
+    run $DSH_EXEC -c -i $SERVER_IP -p $SERVER_PORT <<EOF
+ls
+exit
+EOF
+    echo "$output"
+    [[ "$output" =~ "dsh4> exit" || "$output" =~ "client exited: getting next connection..." ]]
+}
+
+
+
+@test "Pipeline command execution" {
+    run $DSH_EXEC -c -i $SERVER_IP -p $SERVER_PORT <<EOF
+echo "hello world" | tr a-z A-Z
+exit
+EOF
+    echo "$output"
+    [[ "$output" =~ "HELLO WORLD" ]]
+}
+
+@test "Invalid command handling" {
+    run $DSH_EXEC -c -i $SERVER_IP -p $SERVER_PORT <<EOF
+invalidcmd
+exit
+EOF
+    echo "$output"
+    [[ "$output" =~ "execvp failed" ]]  # Expected failure message
+}
+
+
+@test "Multi-threaded support test" {
+    # Start multi-threaded server
+    pkill -f "$DSH_EXEC -s" || true
+    $DSH_EXEC -s -i 0.0.0.0 -p $SERVER_PORT -x > server_output.log 2>&1 &
+    sleep 1
+
+    # Run two clients simultaneously
+    $DSH_EXEC -c -i $SERVER_IP -p $SERVER_PORT <<EOF > client1_output.log 2>&1 &
+ls
+exit
+EOF
+
+    $DSH_EXEC -c -i $SERVER_IP -p $SERVER_PORT <<EOF > client2_output.log 2>&1 &
+whoami
+exit
+EOF
+
+    sleep 2  # Give clients time to execute
+
+    # Validate both clients received expected output
+    run cat client1_output.log
+    echo "$output"
+    [[ "$output" =~ "dsh4>" ]]
+
+    run cat client2_output.log
+    echo "$output"
+    [[ "$output" =~ "dsh4>" ]]
+    rm client1_output.log
+    rm client2_output.log
+    rm server_output.log
+}
+