DEV: Move spec/components to spec/lib (#15987)

Lib specs were inexplicably split into two directories (`lib` and `components`)

This moves them all into `lib`.

spec/lib/secure_session_spec.rb

@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe SecureSession do
+  it "operates correctly" do
+    s = SecureSession.new("abc")
+
+    s["hello"] = "world"
+    s["foo"] = "bar"
+    expect(s["hello"]).to eq("world")
+    expect(s["foo"]).to eq("bar")
+
+    s["hello"] = nil
+    expect(s["hello"]).to eq(nil)
+  end
+
+  it "can override expiry" do
+    s = SecureSession.new("abc")
+    key = SecureRandom.hex
+
+    s.set(key, "test2", expires: 5.minutes)
+    expect(s.ttl(key)).to be_within(1.second).of (5.minutes)
+
+    key = SecureRandom.hex
+    s.set(key, "test2")
+    expect(s.ttl(key)).to be_within(1.second).of (SecureSession.expiry)
+  end
+end