Replace test for checking formulae tap

As suggested by @Rylan12, integration tests are super slow.

Co-Authored-By: Rylan Polster <rslpolster@gmail.com>

Library/Homebrew/test/cmd/info_spec.rb

@@ -6,19 +6,6 @@ require "cmd/info"
 require "cmd/shared_examples/args_parse"
 
 describe "brew info" do
-  let(:tarball) do
-    if OS.linux?
-      TEST_FIXTURE_DIR/"tarballs/testball-0.1-linux.tbz"
-    else
-      TEST_FIXTURE_DIR/"tarballs/testball-0.1.tbz"
-    end
-  end
-  let(:expected_output) {
-    <<~EOS
-      {"formulae":[{"name":"testball","full_name":"testball","tap":"homebrew/core","oldname":null,"aliases":[],"versioned_formulae":[],"desc":"Some test","license":null,"homepage":"https://brew.sh/testball","versions":{"stable":"0.1","head":null,"bottle":false},"urls":{"stable":{"url":"file://#{tarball}","tag":null,"revision":null}},"revision":0,"version_scheme":0,"bottle":{},"keg_only":false,"bottle_disabled":false,"options":[{"option":"--with-foo","description":"Build with foo"}],"build_dependencies":[],"dependencies":[],"recommended_dependencies":[],"optional_dependencies":[],"uses_from_macos":[],"requirements":[],"conflicts_with":[],"caveats":null,"installed":[],"linked_keg":null,"pinned":false,"outdated":false,"deprecated":false,"deprecation_date":null,"deprecation_reason":null,"disabled":false,"disable_date":null,"disable_reason":null}],"casks":[]}
-    EOS
-  }
-
   it_behaves_like "parseable arguments"
 
   it "prints as json with the --json=v1 flag", :integration_test do
@@ -39,13 +26,6 @@ describe "brew info" do
       .and be_a_success
   end
 
-  it "check --json=v2 format", :integration_test do
-    setup_test_formula "testball"
-
-    expect { brew "info", "testball", "--json=v2" }
-      .to output(expected_output).to_stdout
-  end
-
   describe Homebrew do
     describe "::github_remote_path" do
       let(:remote) { "https://github.com/Homebrew/homebrew-core" }

Library/Homebrew/test/formula_spec.rb

@@ -838,6 +838,7 @@ describe Formula do
     expect(h).to be_a(Hash)
     expect(h["name"]).to eq("foo")
     expect(h["full_name"]).to eq("foo")
+    expect(h["tap"]).to eq("homebrew/core")
     expect(h["versions"]["stable"]).to eq("1.0")
     expect(h["versions"]["bottle"]).to be_truthy
   end