update cmd/uses and cmd/deps tests

These tests were very simple before and now this should result
in more code coverage without affecting test performance.

The only tricky thing was testing the `--missing` option without
actually installing a package using `install_test_formula` because
that is very slow (around 10 seconds on my machine). I ended
up just writing the tab to a plausible keg directory for each
package I wanted to "install". This allows us to test the behavior
while also not increasing CI time by ~20 seconds (though it'd
probably be faster on CI than my local machine).

Library/Homebrew/test/cmd/deps_spec.rb

@@ -6,16 +6,34 @@ describe "brew deps" do
   it_behaves_like "parseable arguments"
 
   it "outputs all of a Formula's dependencies and their dependencies on separate lines", :integration_test do
-    setup_test_formula "foo"
+    # Included in output
     setup_test_formula "bar"
+    setup_test_formula "foo"
+    setup_test_formula "test"
+
+    # Excluded from output
     setup_test_formula "baz", <<~RUBY
       url "https://brew.sh/baz-1.0"
       depends_on "bar"
+      depends_on "build" => :build
+      depends_on "test" => :test
+      depends_on "optional" => :optional
+      depends_on "recommended_test" => [:recommended, :test]
+      depends_on "installed"
     RUBY
+    setup_test_formula "build"
+    setup_test_formula "optional"
+    setup_test_formula "recommended_test"
+    setup_test_formula "installed"
 
-    expect { brew "deps", "baz" }
+    # Mock `Formula#any_version_installed?` by creating the tab in a plausible keg directory
+    keg_dir = HOMEBREW_CELLAR/"installed"/"1.0"
+    keg_dir.mkpath
+    touch keg_dir/Tab::FILENAME
+
+    expect { brew "deps", "baz", "--include-test", "--missing", "--skip-recommended" }
       .to be_a_success
-      .and output("bar\nfoo\n").to_stdout
+      .and output("bar\nfoo\ntest\n").to_stdout
       .and not_to_output.to_stderr
   end
 end

Library/Homebrew/test/cmd/uses_spec.rb

@@ -6,15 +6,37 @@ describe "brew uses" do
   it_behaves_like "parseable arguments"
 
   it "prints the Formulae a given Formula is used by", :integration_test do
-    setup_test_formula "foo"
+    # Included in output
     setup_test_formula "bar"
-    setup_test_formula "baz", <<~RUBY
-      url "https://brew.sh/baz-1.0"
-      depends_on "bar"
+    setup_test_formula "optional", <<~RUBY
+      url "https://brew.sh/optional-1.0"
+      depends_on "bar" => :optional
     RUBY
 
-    expect { brew "uses", "--eval-all", "--recursive", "foo" }
-      .to output(/(bar\nbaz|baz\nbar)/).to_stdout
+    # Excluded from output
+    setup_test_formula "foo"
+    setup_test_formula "test", <<~RUBY
+      url "https://brew.sh/test-1.0"
+      depends_on "foo" => :test
+    RUBY
+    setup_test_formula "build", <<~RUBY
+      url "https://brew.sh/build-1.0"
+      depends_on "foo" => :build
+    RUBY
+    setup_test_formula "installed", <<~RUBY
+      url "https://brew.sh/installed-1.0"
+      depends_on "foo"
+    RUBY
+
+    # Mock `Formula#any_version_installed?` by creating the tab in a plausible keg directory
+    %w[foo installed].each do |formula_name|
+      keg_dir = HOMEBREW_CELLAR/formula_name/"1.0"
+      keg_dir.mkpath
+      touch keg_dir/Tab::FILENAME
+    end
+
+    expect { brew "uses", "foo", "--eval-all", "--include-optional", "--missing", "--recursive" }
+      .to output(/^(bar\noptional|optional\nbar)$/).to_stdout
       .and not_to_output.to_stderr
       .and be_a_success
   end

Library/Homebrew/test/support/helper/spec/shared_context/integration_test.rb

@@ -166,10 +166,6 @@ RSpec.shared_context "integration test" do # rubocop:disable RSpec/ContextWordin
 
         # something here
       RUBY
-    when "foo", "gnupg"
-      content = <<~RUBY
-        url "https://brew.sh/#{name}-1.0"
-      RUBY
     when "bar"
       content = <<~RUBY
         url "https://brew.sh/#{name}-1.0"
@@ -180,6 +176,10 @@ RSpec.shared_context "integration test" do # rubocop:disable RSpec/ContextWordin
         url "https://brew.sh/#patchelf-1.0"
         license "0BSD"
       RUBY
+    else
+      content ||= <<~RUBY
+        url "https://brew.sh/#{name}-1.0"
+      RUBY
     end
 
     Formulary.core_path(name).tap do |formula_path|