Remove cask-specific checksum errors.

Library/Homebrew/cask/download.rb

@@ -50,21 +50,20 @@ module Cask
 
     def verify_download_integrity(fn)
       if @cask.sha256 == :no_check
-        opoo "No checksum defined for Cask '#{@cask}', skipping verification."
+        opoo "No checksum defined for cask '#{@cask}', skipping verification."
         return
       end
 
-      ohai "Verifying checksum for Cask '#{@cask}'." if verbose?
-
-      expected = @cask.sha256
-      actual = fn.sha256
-
       begin
-        fn.verify_checksum(expected)
+        ohai "Verifying checksum for cask '#{@cask}'." if verbose?
+        fn.verify_checksum(@cask.sha256)
       rescue ChecksumMissingError
-        raise CaskSha256MissingError.new(@cask.token, expected, actual)
-      rescue ChecksumMismatchError
-        raise CaskSha256MismatchError.new(@cask.token, expected, actual, fn)
+        opoo <<~EOS
+          Cannot verify integrity of '#{fn.basename}'.
+          No checksum was provided for this cask.
+          For your reference, the checksum is:
+            sha256 "#{fn.sha256}"
+        EOS
       end
     end
 

Library/Homebrew/cask/exceptions.rb

@@ -207,76 +207,6 @@ module Cask
     end
   end
 
-  # Error with a cask's checksum.
-  #
-  # @api private
-  class CaskSha256Error < AbstractCaskErrorWithToken
-    attr_reader :expected, :actual
-
-    def initialize(token, expected = nil, actual = nil)
-      super(token)
-      @expected = expected
-      @actual = actual
-    end
-  end
-
-  # Error when a cask's checksum is missing.
-  #
-  # @api private
-  class CaskSha256MissingError < CaskSha256Error
-    extend T::Sig
-
-    sig { returns(String) }
-    def to_s
-      <<~EOS
-        Cask '#{token}' requires a checksum:
-          #{Formatter.identifier("sha256 \"#{actual}\"")}
-      EOS
-    end
-  end
-
-  # Error when a cask's checksum does not match.
-  #
-  # @api private
-  class CaskSha256MismatchError < CaskSha256Error
-    extend T::Sig
-
-    attr_reader :path
-
-    def initialize(token, expected, actual, path)
-      super(token, expected, actual)
-      @path = path
-    end
-
-    sig { returns(String) }
-    def to_s
-      <<~EOS
-        Checksum for Cask '#{token}' does not match.
-        Expected: #{Formatter.success(expected.to_s)}
-          Actual: #{Formatter.error(actual.to_s)}
-            File: #{path}
-        To retry an incomplete download, remove the file above.
-        If the issue persists, visit:
-          #{Formatter.url("https://github.com/Homebrew/homebrew-cask/blob/HEAD/doc/reporting_bugs/checksum_does_not_match_error.md")}
-      EOS
-    end
-  end
-
-  # Error when a cask has no checksum and the `--require-sha` flag is passed.
-  #
-  # @api private
-  class CaskNoShasumError < CaskSha256Error
-    extend T::Sig
-
-    sig { returns(String) }
-    def to_s
-      <<~EOS
-        Cask '#{token}' does not have a sha256 checksum defined and was not installed.
-        This means you have the #{Formatter.identifier("--require-sha")} option set, perhaps in your HOMEBREW_CASK_OPTS.
-      EOS
-    end
-  end
-
   # Error during quarantining of a file.
   #
   # @api private

Library/Homebrew/cask/installer.rb

@@ -163,7 +163,10 @@ module Cask
       odebug "Checking cask has checksum"
       return unless @cask.sha256 == :no_check
 
-      raise CaskNoShasumError, @cask.token
+      raise CaskError, <<~EOS
+        Cask '#{@cask}' does not have a sha256 checksum defined and was not installed.
+        This means you have the #{Formatter.identifier("--require-sha")} option set, perhaps in your HOMEBREW_CASK_OPTS.
+      EOS
     end
 
     def primary_container

Library/Homebrew/exceptions.rb

@@ -617,15 +617,15 @@ class ChecksumMissingError < ArgumentError; end
 class ChecksumMismatchError < RuntimeError
   attr_reader :expected, :hash_type
 
-  def initialize(fn, expected, actual)
+  def initialize(path, expected, actual)
     @expected = expected
     @hash_type = expected.hash_type.to_s.upcase
 
     super <<~EOS
       #{@hash_type} mismatch
-      Expected: #{expected}
-        Actual: #{actual}
-       Archive: #{fn}
+      Expected: #{Formatter.success(expected.to_s)}
+        Actual: #{Formatter.error(actual.to_s)}
+          File: #{path}
       To retry an incomplete download, remove the file above.
     EOS
   end

Library/Homebrew/resource.rb

@@ -146,13 +146,16 @@ class Resource
 
   def verify_download_integrity(fn)
     if fn.file?
-      ohai "Verifying #{fn.basename} checksum" if verbose?
+      ohai "Verifying checksum for '#{fn.basename}'." if verbose?
       fn.verify_checksum(checksum)
     end
   rescue ChecksumMissingError
-    opoo "Cannot verify integrity of #{fn.basename}"
-    puts "A checksum was not provided for this resource."
-    puts "For your reference the SHA-256 is: #{fn.sha256}"
+    opoo <<~EOS
+      Cannot verify integrity of '#{fn.basename}'.
+      No checksum was provided for this resource.
+      For your reference, the checksum is:
+        sha256 "#{fn.sha256}"
+    EOS
   end
 
   Checksum::TYPES.each do |type|

Library/Homebrew/test/cask/cmd/upgrade_spec.rb

@@ -344,7 +344,7 @@ describe Cask::Cmd::Upgrade, :cask do
 
       expect {
         described_class.run("bad-checksum")
-      }.to raise_error(Cask::CaskSha256MismatchError).and(not_to_output(output_reverted).to_stderr)
+      }.to raise_error(ChecksumMismatchError).and(not_to_output(output_reverted).to_stderr)
 
       expect(bad_checksum).to be_installed
       expect(bad_checksum_path).to be_a_directory

Library/Homebrew/test/cask/download_spec.rb

@@ -35,16 +35,16 @@ module Cask
       context "when the expected checksum is nil" do
         let(:expected_sha256) { nil }
 
-        it "raises an error" do
-          expect { verification }.to raise_error(CaskSha256MissingError, /sha256 "#{computed_sha256}"/)
+        it "outputs an error" do
+          expect { verification }.to output(/sha256 "#{computed_sha256}"/).to_stderr
         end
       end
 
       context "when the expected checksum is empty" do
         let(:expected_sha256) { Checksum.new(:sha256, "") }
 
-        it "raises an error" do
-          expect { verification }.to raise_error(CaskSha256MissingError, /sha256 "#{computed_sha256}"/)
+        it "outputs an error" do
+          expect { verification }.to output(/sha256 "#{computed_sha256}"/).to_stderr
         end
       end
 
@@ -52,7 +52,7 @@ module Cask
         let(:expected_sha256) { Checksum.new(:sha256, deadbeef) }
 
         it "raises an error" do
-          expect { verification }.to raise_error CaskSha256MismatchError
+          expect { verification }.to raise_error ChecksumMismatchError
         end
       end
     end

Library/Homebrew/test/cask/installer_spec.rb

@@ -65,14 +65,14 @@ describe Cask::Installer, :cask do
       bad_checksum = Cask::CaskLoader.load(cask_path("bad-checksum"))
       expect {
         described_class.new(bad_checksum).install
-      }.to raise_error(Cask::CaskSha256MismatchError)
+      }.to raise_error(ChecksumMismatchError)
     end
 
     it "blows up on a missing checksum" do
       missing_checksum = Cask::CaskLoader.load(cask_path("missing-checksum"))
       expect {
         described_class.new(missing_checksum).install
-      }.to raise_error(Cask::CaskSha256MissingError)
+      }.to output(/Cannot verify integrity/).to_stderr
     end
 
     it "installs fine if sha256 :no_check is used" do
@@ -87,7 +87,7 @@ describe Cask::Installer, :cask do
       no_checksum = Cask::CaskLoader.load(cask_path("no-checksum"))
       expect {
         described_class.new(no_checksum, require_sha: true).install
-      }.to raise_error(Cask::CaskNoShasumError)
+      }.to raise_error(/--require-sha/)
     end
 
     it "installs fine if sha256 :no_check is used with --require-sha and --force" do