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/common_passwords/common_passwords_spec.rb

@@ -0,0 +1,72 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+describe CommonPasswords do
+  it "the passwords file should exist" do
+    expect(File.exist?(described_class::PASSWORD_FILE)).to eq(true)
+  end
+
+  describe "#common_password?" do
+    before { described_class.stubs(:redis).returns(stub_everything) }
+
+    subject { described_class.common_password? @password }
+
+    it "returns false if password isn't in the common passwords list" do
+      described_class.stubs(:password_list).returns(stub_everything(include?: false))
+      @password = 'uncommonPassword'
+      expect(subject).to eq(false)
+    end
+
+    it "returns false if password is nil" do
+      described_class.expects(:password_list).never
+      @password = nil
+      expect(subject).to eq(false)
+    end
+
+    it "returns false if password is blank" do
+      described_class.expects(:password_list).never
+      @password = ""
+      expect(subject).to eq(false)
+    end
+
+    it "returns true if password is in the common passwords list" do
+      described_class.stubs(:password_list).returns(stub_everything(include?: true))
+      @password = "password"
+      expect(subject).to eq(true)
+    end
+  end
+
+  describe '#password_list' do
+    before { Discourse.redis.flushdb }
+    after { Discourse.redis.flushdb }
+
+    it "loads the passwords file if redis doesn't have it" do
+      Discourse.redis.without_namespace.stubs(:scard).returns(0)
+      described_class.expects(:load_passwords).returns(['password'])
+      list = described_class.password_list
+      expect(list).to respond_to(:include?)
+    end
+
+    it "doesn't load the passwords file if redis has it" do
+      Discourse.redis.without_namespace.stubs(:scard).returns(10000)
+      described_class.expects(:load_passwords).never
+      list = described_class.password_list
+      expect(list).to respond_to(:include?)
+    end
+
+    it "loads the passwords file if redis has an empty list" do
+      Discourse.redis.without_namespace.stubs(:scard).returns(0)
+      described_class.expects(:load_passwords).returns(['password'])
+      list = described_class.password_list
+      expect(list).to respond_to(:include?)
+    end
+  end
+
+  context "missing password file" do
+    it "tolerates it" do
+      File.stubs(:readlines).with(described_class::PASSWORD_FILE).raises(Errno::ENOENT)
+      expect(described_class.common_password?("password")).to eq(false)
+    end
+  end
+end