```ruby
# Define a Hash

# I worked on this challenge [by myself, with: ].


# Your Solution Below

# my_info is empty to start.  Edit this!
my_info = {
  :first_name => "Kai",
  :last_name => "Huang",
  :hometown => "San Francicso",
  :age => 30
}





# RSpec Tests. They are included in this file because the local variables you are creating are not accessible across files. If we try to run these files as a separate file per normal operation, the local variable checks will return nil.


describe 'my_info' do
  REQUIRED_KEYS = [:first_name, :last_name, :hometown, :age]

  it "is defined as a local variable" do
    expect(defined?(my_info)).to eq 'local-variable'
  end

  it "is a Hash" do
    expect(my_info).to be_a Hash
  end

  REQUIRED_KEYS.each do |key|
    it "has a :#{key} key" do
      expect(my_info).to have_key key
    end
  end

  (REQUIRED_KEYS - [:age]).each do |key|
    it "#{key} is a String" do
      expect(my_info[key]).to be_a String
    end

    it "#{key} is not empty" do
      expect(my_info[key]).to_not be_empty
    end
  end

  it ":age is an integer" do
    expect(my_info[:age]).to be_a Fixnum
  end

  it ":age is positive" do
    expect(my_info[:age]).to be > 0
  end
end```

Add solution file for challenge 4.6
user
```ruby
# Define a Hash

# I worked on this challenge [by myself].


# Your Solution Below

# my_info is empty to start.  Edit this!
my_info = {
  :first_name => "Kai",
  :last_name => "Huang",
  :hometown => "San Francicso",
  :age => 30
}


# RSpec Tests. They are included in this file because the local variables you are creating are not accessible across files. If we try to run these files as a separate file per normal operation, the local variable checks will return nil.


describe 'my_info' do
  REQUIRED_KEYS = [:first_name, :last_name, :hometown, :age]

  it "is defined as a local variable" do
    expect(defined?(my_info)).to eq 'local-variable'
  end

  it "is a Hash" do
    expect(my_info).to be_a Hash
  end

  REQUIRED_KEYS.each do |key|
    it "has a :#{key} key" do
      expect(my_info).to have_key key
    end
  end

  (REQUIRED_KEYS - [:age]).each do |key|
    it "#{key} is a String" do
      expect(my_info[key]).to be_a String
    end

    it "#{key} is not empty" do
      expect(my_info[key]).to_not be_empty
    end
  end

  it ":age is an integer" do
    expect(my_info[:age]).to be_a Fixnum
  end

  it ":age is positive" do
    expect(my_info[:age]).to be > 0
  end
end```
assistant