Refactor specs to use one-liner expectation

spec/lib/gitlab/authorized_keys_spec.rb

@@ -5,9 +5,11 @@
 describe Gitlab::AuthorizedKeys do
   let(:logger) { double('logger').as_null_object }
 
-  subject { described_class.new(logger) }
+  subject(:authorized_keys) { described_class.new(logger) }
 
   describe '#accessible?' do
+    subject { authorized_keys.accessible? }
+
     context 'authorized_keys file exists' do
       before do
         create_authorized_keys_fixture
@@ -18,9 +20,7 @@
       end
 
       context 'can open file' do
-        it 'returns true' do
-          expect(subject.accessible?).to eq(true)
-        end
+        it { is_expected.to be_truthy }
       end
 
       context 'cannot open file' do
@@ -28,21 +28,23 @@
           allow(File).to receive(:open).and_raise(Errno::EACCES)
         end
 
-        it 'returns false' do
-          expect(subject.accessible?).to eq(false)
-        end
+        it { is_expected.to be_falsey }
       end
     end
 
     context 'authorized_keys file does not exist' do
-      it 'returns false' do
-        expect(subject.accessible?).to eq(false)
-      end
+      it { is_expected.to be_falsey }
     end
   end
 
   describe '#add_key' do
+    let(:id) { 'key-741' }
+
+    subject { authorized_keys.add_key(id, key) }
+
     context 'authorized_keys file exists' do
+      let(:key) { 'ssh-rsa AAAAB3NzaDAxx2E trailing garbage' }
+
       before do
         create_authorized_keys_fixture
       end
@@ -55,19 +57,20 @@
         auth_line = "command=\"#{Gitlab.config.gitlab_shell.path}/bin/gitlab-shell key-741\",no-port-forwarding,no-X11-forwarding,no-agent-forwarding,no-pty ssh-rsa AAAAB3NzaDAxx2E"
 
         expect(logger).to receive(:info).with('Adding key (key-741): ssh-rsa AAAAB3NzaDAxx2E')
-        expect(subject.add_key('key-741', 'ssh-rsa AAAAB3NzaDAxx2E trailing garbage'))
-          .to be_truthy
+        expect(subject).to be_truthy
         expect(File.read(tmp_authorized_keys_path)).to eq("existing content\n#{auth_line}\n")
       end
     end
 
     context 'authorized_keys file does not exist' do
+      let(:key) { 'ssh-rsa AAAAB3NzaDAxx2E' }
+
       before do
         delete_authorized_keys_file
       end
 
       it 'creates the file' do
-        expect(subject.add_key('key-741', 'ssh-rsa AAAAB3NzaDAxx2E')).to be_truthy
+        expect(subject).to be_truthy
         expect(File.exist?(tmp_authorized_keys_path)).to be_truthy
       end
     end
@@ -81,6 +84,8 @@
       ]
     end
 
+    subject { authorized_keys.batch_add_keys(keys) }
+
     context 'authorized_keys file exists' do
       before do
         create_authorized_keys_fixture
@@ -96,7 +101,7 @@
 
         expect(logger).to receive(:info).with('Adding key (key-12): ssh-dsa ASDFASGADG')
         expect(logger).to receive(:info).with('Adding key (key-123): ssh-rsa GFDGDFSGSDFG')
-        expect(subject.batch_add_keys(keys)).to be_truthy
+        expect(subject).to be_truthy
         expect(File.read(tmp_authorized_keys_path)).to eq("existing content\n#{auth_line1}\n#{auth_line2}\n")
       end
 
@@ -104,7 +109,7 @@
         let(:keys) { [double(shell_id: 'key-123', key: "ssh-rsa A\tSDFA\nSGADG")] }
 
         it "doesn't add keys" do
-          expect(subject.batch_add_keys(keys)).to be_falsey
+          expect(subject).to be_falsey
           expect(File.read(tmp_authorized_keys_path)).to eq("existing content\n")
         end
       end
@@ -116,16 +121,28 @@
       end
 
       it 'creates the file' do
-        expect(subject.batch_add_keys(keys)).to be_truthy
+        expect(subject).to be_truthy
         expect(File.exist?(tmp_authorized_keys_path)).to be_truthy
       end
     end
   end
 
   describe '#rm_key' do
+    let(:key) { 'key-741' }
+
+    subject { authorized_keys.rm_key(key) }
+
     context 'authorized_keys file exists' do
+      let(:other_line) { "command=\"#{Gitlab.config.gitlab_shell.path}/bin/gitlab-shell key-742\",options ssh-rsa AAAAB3NzaDAxx2E" }
+      let(:delete_line) { "command=\"#{Gitlab.config.gitlab_shell.path}/bin/gitlab-shell key-741\",options ssh-rsa AAAAB3NzaDAxx2E" }
+
       before do
         create_authorized_keys_fixture
+
+        File.open(tmp_authorized_keys_path, 'a') do |auth_file|
+          auth_file.puts delete_line
+          auth_file.puts other_line
+        end
       end
 
       after do
@@ -133,16 +150,10 @@
       end
 
       it "removes the right line" do
-        other_line = "command=\"#{Gitlab.config.gitlab_shell.path}/bin/gitlab-shell key-742\",options ssh-rsa AAAAB3NzaDAxx2E"
-        delete_line = "command=\"#{Gitlab.config.gitlab_shell.path}/bin/gitlab-shell key-741\",options ssh-rsa AAAAB3NzaDAxx2E"
         erased_line = delete_line.gsub(/./, '#')
-        File.open(tmp_authorized_keys_path, 'a') do |auth_file|
-          auth_file.puts delete_line
-          auth_file.puts other_line
-        end
 
         expect(logger).to receive(:info).with('Removing key (key-741)')
-        expect(subject.rm_key('key-741')).to be_truthy
+        expect(subject).to be_truthy
         expect(File.read(tmp_authorized_keys_path)).to eq("existing content\n#{erased_line}\n#{other_line}\n")
       end
     end
@@ -152,13 +163,13 @@
         delete_authorized_keys_file
       end
 
-      it 'returns false' do
-        expect(subject.rm_key('key-741')).to be_falsey
-      end
+      it { is_expected.to be_falsey }
     end
   end
 
   describe '#clear' do
+    subject { authorized_keys.clear }
+
     context 'authorized_keys file exists' do
       before do
         create_authorized_keys_fixture
@@ -168,9 +179,7 @@
         delete_authorized_keys_file
       end
 
-      it "returns true" do
-        expect(subject.clear).to be_truthy
-      end
+      it { is_expected.to be_truthy }
     end
 
     context 'authorized_keys file does not exist' do
@@ -178,13 +187,13 @@
         delete_authorized_keys_file
       end
 
-      it "still returns true" do
-        expect(subject.clear).to be_truthy
-      end
+      it { is_expected.to be_truthy }
     end
   end
 
   describe '#list_key_ids' do
+    subject { authorized_keys.list_key_ids }
+
     context 'authorized_keys file exists' do
       before do
         create_authorized_keys_fixture(
@@ -197,9 +206,7 @@
         delete_authorized_keys_file
       end
 
-      it 'returns array of key IDs' do
-        expect(subject.list_key_ids).to eq([1, 2, 3, 9000])
-      end
+      it { is_expected.to eq([1, 2, 3, 9000]) }
     end
 
     context 'authorized_keys file does not exist' do
@@ -207,9 +214,7 @@
         delete_authorized_keys_file
       end
 
-      it 'returns an empty array' do
-        expect(subject.list_key_ids).to be_empty
-      end
+      it { is_expected.to be_empty }
     end
   end
 

spec/lib/system_check/app/authorized_keys_permission_check_spec.rb

@@ -3,13 +3,13 @@
 require 'spec_helper'
 
 describe SystemCheck::App::AuthorizedKeysPermissionCheck do
-  subject { described_class.new }
+  subject(:system_check) { described_class.new }
 
   describe '#skip?' do
+    subject { system_check.skip? }
+
     context 'authorized keys enabled' do
-      it 'returns false' do
-        expect(subject.skip?).to eq(false)
-      end
+      it { is_expected.to eq(false) }
     end
 
     context 'authorized keys not enabled' do
@@ -17,34 +17,29 @@
         stub_application_setting(authorized_keys_enabled: false)
       end
 
-      it 'returns true' do
-        expect(subject.skip?).to eq(true)
-      end
+      it { is_expected.to eq(true) }
     end
   end
 
   describe '#check?' do
-    let(:authorized_keys) { double }
+    subject { system_check.check? }
 
     before do
-      allow(Gitlab::AuthorizedKeys).to receive(:new).and_return(authorized_keys)
-      allow(authorized_keys).to receive(:accessible?).and_return(accessible?)
+      expect_next_instance_of(Gitlab::AuthorizedKeys) do |instance|
+        allow(instance).to receive(:accessible?) { accessible? }
+      end
     end
 
     context 'authorized keys is accessible' do
       let(:accessible?) { true }
 
-      it 'returns true' do
-        expect(subject.check?).to eq(true)
-      end
+      it { is_expected.to eq(true) }
     end
 
     context 'authorized keys is not accessible' do
       let(:accessible?) { false }
 
-      it 'returns false' do
-        expect(subject.check?).to eq(false)
-      end
+      it { is_expected.to eq(false) }
     end
   end
 end