Add testcase count to output

Sometimes we like to verify that our tests are being executed.  For
example, we've had minor tooling changes cause test to stop being
run. This commit adds a summary of the test cases found while parsing
for failures.

Author: Julian Simpson

ruby/bin/annotate

@@ -20,6 +20,7 @@ class Failure < Struct.new(:name, :failed_test, :body, :job, :type)
 end
 
 junit_report_files = Dir.glob(File.join(junits_dir, "**", "*"))
+testcases = 0
 failures = []
 
 def text_content(element)
@@ -41,6 +42,7 @@ junit_report_files.sort.each do |file|
   doc = REXML::Document.new(xml)
 
   REXML::XPath.each(doc, '//testsuite//testcase') do |testcase|
+    testcases += 1
     name = testcase.attributes['name'].to_s
     failed_test = testcase.attributes[failure_format].to_s
     testcase.elements.each("failure") do |failure|
@@ -53,6 +55,7 @@ junit_report_files.sort.each do |file|
 end
 
 STDERR.puts "--- ❓ Checking failures"
+STDERR.puts "#{testcases} testcases found"
 
 if failures.empty?
   STDERR.puts "There were no failures/errors 🙌"

ruby/tests/annotate_test.rb

@@ -10,6 +10,7 @@
       Parsing junit-2.xml
       Parsing junit-3.xml
       --- ❓ Checking failures
+      8 testcases found
       There were no failures/errors 🙌
     OUTPUT
 
@@ -24,6 +25,7 @@
       Parsing junit-2.xml
       Parsing junit-3.xml
       --- ❓ Checking failures
+      6 testcases found
       There are 4 failures/errors 😭
       --- ✍️ Preparing annotation
       4 failures:
@@ -108,6 +110,7 @@
       Parsing junit-2.xml
       Parsing junit-3.xml
       --- ❓ Checking failures
+      6 testcases found
       There are 4 failures/errors 😭
       --- ✍️ Preparing annotation
       2 failures and 2 errors:
@@ -190,6 +193,7 @@
     assert_equal <<~OUTPUT, output
       Parsing junit-123-456-custom-pattern.xml
       --- ❓ Checking failures
+      2 testcases found
       There is 1 failure/error 😭
       --- ✍️ Preparing annotation
       1 failure:
@@ -223,6 +227,7 @@
       Parsing junit-2.xml
       Parsing junit-3.xml
       --- ❓ Checking failures
+      6 testcases found
       There are 4 failures/errors 😭
       --- ✍️ Preparing annotation
       2 failures and 2 errors:
@@ -307,6 +312,7 @@
       Parsing sub-dir/junit-2.xml
       Parsing sub-dir/junit-3.xml
       --- ❓ Checking failures
+      6 testcases found
       There are 4 failures/errors 😭
       --- ✍️ Preparing annotation
       4 failures:
@@ -389,6 +395,7 @@
     assert_equal <<~OUTPUT, output
       Parsing junit.xml
       --- ❓ Checking failures
+      2 testcases found
       There is 1 failure/error 😭
       --- ✍️ Preparing annotation
       1 failure:
@@ -408,6 +415,7 @@
     assert_equal <<~OUTPUT, output
       Parsing junit.xml
       --- ❓ Checking failures
+      2 testcases found
       There is 1 failure/error 😭
       --- ✍️ Preparing annotation
       1 error: