github.com/korya/http-assert

http-assert

A command-line tool for performing HTTP requests and asserting properties of the response. This tool is designed for testing HTTP endpoints, health checks, monitoring, and CI/CD pipelines.

Purpose

http-assert combines the functionality of making HTTP requests with the ability to validate responses against multiple criteria. It's particularly useful for:

• Health checks and monitoring: Verify that your APIs are returning expected responses
• CI/CD pipelines: Validate deployed services before proceeding with deployment
• Integration testing: Test HTTP endpoints with various assertion conditions
• Load balancer testing: Use host mapping to test different backend servers
• SSL/TLS validation: Test secure endpoints with certificate validation options

Installation

From Source

go install github.com/korya/http-assert@latest

Build from Repository

git clone https://github.com/korya/http-assert.git
cd http-assert
go build -o http-assert .

Usage

Basic Syntax

http-assert [flags] <URL>

Request Options

Flag	Short	Description
--request	-X	HTTP method (default: GET)
--data	-d	Request body data
--header	-H	Set request headers (can be used multiple times)
--max-time	-m	Request timeout in seconds (default: 20)
--insecure	-k	Skip SSL certificate verification
--maphost		Map hostname:port to different destination

Assertion Options

Flag	Description
--assert-ok	Assert 2xx status code
--assert-status	Assert specific status code
--assert-header	Assert header matches regex pattern
--assert-header-eq	Assert header equals exact value
--assert-header-missing	Assert header is not present
--assert-body	Assert body matches regex pattern
--assert-body-eq	Assert body equals exact value
--assert-body-empty	Assert body is empty
--assert-redirect	Assert redirect location matches regex
--assert-redirect-eq	Assert redirect location equals exact value

Logging Options

Flag	Short	Description
--verbose	-v	Enable verbose logging
--silent	-s	Only log errors
--log-level		Set log level (debug, info, warn, error)

Examples

Basic Health Check

# Simple health check - assert 200 OK
http-assert --assert-ok https://api.example.com/health

POST Request with JSON Body

# POST with JSON data and assert specific status
http-assert -X POST \
  -H "Content-Type: application/json" \
  -d '{"username":"test","password":"secret"}' \
  --assert-status 201 \
  https://api.example.com/login

Multiple Assertions

# Multiple assertions on the same request
http-assert \
  --assert-ok \
  --assert-header-eq "Content-Type: application/json" \
  --assert-body "\"status\":\"success\"" \
  https://api.example.com/status

Header Validation

# Assert specific headers are present and have expected values
http-assert \
  --assert-header-eq "X-API-Version: v1" \
  --assert-header-missing "X-Debug-Info" \
  --assert-header "Cache-Control: max-age=\d+" \
  https://api.example.com/data

SSL and Security Testing

# Test with SSL verification disabled
http-assert --insecure --assert-ok https://self-signed.example.com

# Test with custom timeout
http-assert --max-time 5 --assert-ok https://slow-api.example.com

Host Mapping for Load Balancer Testing

# Map requests to specific backend servers
http-assert \
  --maphost "api.example.com:443=backend1.internal:8443" \
  --assert-ok \
  https://api.example.com/health

# Test multiple backends
http-assert \
  --maphost "*:80=192.168.1.10" \
  --assert-status 200 \
  http://loadbalancer.example.com

Redirect Testing

# Assert redirect to specific URL
http-assert \
  --assert-redirect-eq "https://new-domain.com/path" \
  https://old-domain.com/path

# Assert redirect matches pattern
http-assert \
  --assert-redirect "https://.*\.example\.com/.*" \
  https://redirect.example.com

# Note: URLs with query parameters should be quoted to avoid shell interpretation
http-assert \
  --assert-redirect-eq "https://example.com/target" \
  "https://example.com/redirect?url=https://example.com/target"

Body Content Validation

# Assert exact body content
http-assert \
  --assert-body-eq "OK" \
  https://api.example.com/ping

# Assert body matches regex pattern
http-assert \
  --assert-body "\"users\":\s*\[\]" \
  https://api.example.com/users

# Assert empty response body
http-assert \
  --assert-body-empty \
  https://api.example.com/delete-resource

Environment Variables

You can also configure the tool using environment variables with the HTTP_ASSERT_ prefix:

export HTTP_ASSERT_VERBOSE=true
export HTTP_ASSERT_MAX_TIME=30
export HTTP_ASSERT_INSECURE=true

http-assert --assert-ok https://api.example.com

Exit Codes

• 0: All assertions passed
• 93: Failed to perform HTTP request or assertions failed
• 103: Invalid command line arguments or other errors

Use Cases

CI/CD Pipeline Integration

#!/bin/bash
# Deploy and validate service
deploy-service.sh

# Wait for service to be ready
sleep 10

# Validate deployment
http-assert \
  --max-time 30 \
  --assert-ok \
  --assert-header-eq "X-Service-Version: $EXPECTED_VERSION" \
  https://api.example.com/health

if [ $? -eq 0 ]; then
  echo "Deployment validation passed"
else
  echo "Deployment validation failed"
  exit 1
fi

Monitoring Script

#!/bin/bash
# Simple monitoring script
ENDPOINTS=(
  "https://api.example.com/health"
  "https://db.example.com/ping"
  "https://cache.example.com/status"
)

for endpoint in "${ENDPOINTS[@]}"; do
  if http-assert --silent --assert-ok "$endpoint"; then
    echo "✓ $endpoint"
  else
    echo "✗ $endpoint"
  fi
done

Load Balancer Health Check

# Test all backend servers through load balancer
BACKENDS=("backend1.internal" "backend2.internal" "backend3.internal")

for backend in "${BACKENDS[@]}"; do
  echo "Testing $backend..."
  http-assert \
    --maphost "api.example.com:443=$backend:8443" \
    --assert-ok \
    --assert-header "X-Backend-Server: $backend" \
    https://api.example.com/health
done