```ruby
describe LabDescription do
  it "defaults to true" do
    create(:lab_description).should be_valid
  end

  it "should have a 'when'" do
    create(:lab_description).when.should_not be_nil
  end
end```

Create basic specs for LabDescription, all validations passes
user
```ruby
describe LabDescription do
  describe "validations" do
    it "defaults to valid" do
      create(:lab_description).should be_valid
    end

    it "must have a valid commit hash" do
      build(:lab_description, commit_hash: "not valid").should_not be_valid
    end

    it "must have title with length >= 2" do
      build(:lab_description, title: "a").should_not be_valid
    end

    it "must have description with length > 5" do
      build(:lab_description, description: "abcd").should_not be_valid
    end

    it "must have a 'when' relation" do
      build(:lab_description, when: nil).should_not be_valid
    end
  end

  describe "realtions" do
    it "should have a 'when'" do
      create(:lab_description).when.should_not be_nil
    end
  end
end```
assistant