rubocop: fix some rubocop offences

Library/Homebrew/test/.rubocop_todo.yml

@@ -121,17 +121,6 @@ RSpec/RepeatedDescription:
     - 'rubocops/lines_cop_spec.rb'
     - 'tab_spec.rb'
 
-# Offense count: 10
-RSpec/RepeatedExample:
-  Exclude:
-    - 'compiler_selector_spec.rb'
-    - 'utils/shell_spec.rb'
-
-# Offense count: 2
-RSpec/ScatteredLet:
-  Exclude:
-    - 'cask/artifact/uninstall_zap_shared_examples.rb'
-
 # Offense count: 31
 RSpec/SubjectStub:
   Exclude:

Library/Homebrew/test/cask/artifact/uninstall_zap_shared_examples.rb

@@ -158,6 +158,8 @@
       let(:glob_path1) { Pathname.new("#{dir}/glob_path1") }
       let(:glob_path2) { Pathname.new("#{dir}/glob_path2") }
       let(:paths) { [absolute_path, path_with_tilde, glob_path1, glob_path2] }
+      let(:fake_system_command) { NeverSudoSystemCommand }
+      let(:cask) { Cask::CaskLoader.load(cask_path("with-#{artifact_dsl_key}-#{directive}")) }
 
       around(:each) do |example|
         begin
@@ -171,9 +173,6 @@
         end
       end
 
-      let(:fake_system_command) { NeverSudoSystemCommand }
-      let(:cask) { Cask::CaskLoader.load(cask_path("with-#{artifact_dsl_key}-#{directive}")) }
-
       before(:each) do
         allow_any_instance_of(Cask::Artifact::AbstractUninstall).to receive(:trash_paths)
           .and_wrap_original do |method, *args|

Library/Homebrew/test/compiler_selector_spec.rb

@@ -27,29 +27,10 @@
   end
 
   describe "#compiler" do
-    it "raises an error if no matching compiler can be found" do
-      software_spec.fails_with(:clang)
-      software_spec.fails_with(:gcc_4_2)
-      software_spec.fails_with(gcc: "4.8")
-      software_spec.fails_with(gcc: "4.7")
-
-      expect { subject.compiler }.to raise_error(CompilerSelectionError)
-    end
-
     it "defaults to cc" do
       expect(subject.compiler).to eq(cc)
     end
 
-    it "returns gcc if it fails with clang" do
-      software_spec.fails_with(:clang)
-      expect(subject.compiler).to eq(:gcc_4_2)
-    end
-
-    it "returns clang if it fails with gcc" do
-      software_spec.fails_with(:gcc_4_2)
-      expect(subject.compiler).to eq(:clang)
-    end
-
     it "returns clang if it fails with non-Apple gcc" do
       software_spec.fails_with(gcc: "4.8")
       expect(subject.compiler).to eq(:clang)
@@ -84,23 +65,7 @@
       expect(subject.compiler).to eq("gcc-4.7")
     end
 
-    it "prefers gcc" do
-      software_spec.fails_with(:clang)
-      software_spec.fails_with(:gcc_4_2)
-      expect(subject.compiler).to eq("gcc-4.8")
-    end
-
-    it "raises an error when gcc is missing" do
-      allow(versions).to receive(:gcc_4_2_build_version).and_return(Version::NULL)
-
-      software_spec.fails_with(:clang)
-      software_spec.fails_with(gcc: "4.8")
-      software_spec.fails_with(gcc: "4.7")
-
-      expect { subject.compiler }.to raise_error(CompilerSelectionError)
-    end
-
-    it "raises an error when llvm and gcc are missing" do
+    it "raises an error when gcc or llvm is missing" do
       allow(versions).to receive(:gcc_4_2_build_version).and_return(Version::NULL)
 
       software_spec.fails_with(:clang)

Library/Homebrew/test/utils/shell_spec.rb

@@ -7,8 +7,8 @@
       expect(subject.profile).to eq("~/.bash_profile")
     end
 
-    it "returns ~/.bash_profile for Sh" do
-      ENV["SHELL"] = "/bin/another_shell"
+    it "returns ~/.bash_profile for sh" do
+      ENV["SHELL"] = "/bin/sh"
       expect(subject.profile).to eq("~/.bash_profile")
     end