Support specifying number of processes to use

Usage: turbo_tests -n [PROCESSES]

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    turbo_tests (0.1.0)
+    turbo_tests (1.1.0)
       optparse
       parallel_tests
       rspec
@@ -26,7 +26,7 @@ GEM
       rspec-mocks (~> 3.9.0)
     rspec-core (3.9.3)
       rspec-support (~> 3.9.3)
-    rspec-expectations (3.9.3)
+    rspec-expectations (3.9.4)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.9.0)
     rspec-mocks (3.9.1)

README.md

@@ -80,17 +80,20 @@ Show help:
 ```bash
 $ bundle exec turbo_tests -h
 Usage: turbo_tests [options]
+
+[optional] Only selected files & folders:
+  turbo_tests spec/bar spec/baz/xxx_spec.rb
+
+Options:
+    -n [PROCESSES]                   How many processes to use, default: available CPUs
     -r, --require PATH               Require a file.
-    -f, --format FORMATTER           Choose a formatter.
+    -f, --format FORMATTER           Choose a formatter. Available formatters: progress (p), documentation (d). Default: progress
     -t, --tag TAG                    Run examples with the specified tag.
     -o, --out FILE                   Write output to a file instead of $stdout
     -v, --verbose                    More output
         --fail-fast=[N]
 ```
 
-## Roadmap
-- [ ] Capture time to load files #1
-
 ## Development
 
 After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.

lib/turbo_tests/cli.rb

@@ -13,15 +13,31 @@ def run
       requires = []
       formatters = []
       tags = []
+      count = nil
       verbose = false
       fail_fast = nil
 
       OptionParser.new { |opts|
+        opts.banner = <<-BANNER.gsub(/^          /, "")
+          Run all tests in parallel, giving each process ENV['TEST_ENV_NUMBER'] ('1', '2', '3', ...).
+
+          Uses parallel_tests under the hood, but reports test results incrementally. Based on Discourse and RubyGems work in this area.
+
+          Usage: turbo_tests [options]
+
+          [optional] Only selected files & folders:
+            turbo_tests spec/bar spec/baz/xxx_spec.rb
+
+          Options:
+        BANNER
+
+        opts.on("-n [PROCESSES]", Integer, "How many processes to use, default: available CPUs") { |n| count = n }
+
         opts.on("-r", "--require PATH", "Require a file.") do |filename|
           requires << filename
         end
 
-        opts.on("-f", "--format FORMATTER", "Choose a formatter.") do |name|
+        opts.on("-f", "--format FORMATTER", "Choose a formatter. Available formatters: progress (p), documentation (d). Default: progress") do |name|
           formatters << {
             name: name,
             outputs: []
@@ -76,7 +92,8 @@ def run
         tags: tags,
         files: @argv.empty? ? ["spec"] : @argv,
         verbose: verbose,
-        fail_fast: fail_fast
+        fail_fast: fail_fast,
+        count: count,
       )
     end
   end

lib/turbo_tests/runner.rb

@@ -13,6 +13,7 @@ def self.run(opts = {})
       start_time = opts.fetch(:start_time) { Time.now }
       verbose = opts.fetch(:verbose, false)
       fail_fast = opts.fetch(:fail_fast, nil)
+      count = opts.fetch(:count, nil)
 
       reporter = Reporter.from_config(formatters, start_time)
 
@@ -21,7 +22,8 @@ def self.run(opts = {})
         files: files,
         tags: tags,
         verbose: verbose,
-        fail_fast: fail_fast
+        fail_fast: fail_fast,
+        count: count
       ).run
     end
 
@@ -31,6 +33,8 @@ def initialize(opts)
       @tags = opts[:tags]
       @verbose = opts[:verbose]
       @fail_fast = opts[:fail_fast]
+      @count = opts[:count]
+
       @failure_count = 0
       @runtime_log = "tmp/parallel_runtime_rspec.log"
 
@@ -39,7 +43,7 @@ def initialize(opts)
     end
 
     def run
-      @num_processes = ParallelTests.determine_number_of_processes(nil)
+      @num_processes = ParallelTests.determine_number_of_processes(@count)
 
       tests_in_groups =
         ParallelTests::RSpec::Runner.tests_in_groups(

lib/turbo_tests/version.rb

@@ -1,3 +1,3 @@
 module TurboTests
-  VERSION = "1.0.0"
+  VERSION = "1.1.0"
 end

turbo_tests.gemspec

@@ -4,7 +4,7 @@ Gem::Specification.new do |spec|
   spec.name = "turbo_tests"
   spec.version = TurboTests::VERSION
   spec.authors = ["Ilya Zub"]
-  spec.email = ["ilya@serpapi.com"]
+  spec.email = ["zaoooza92@gmail.com"]
 
   spec.summary = "Runner for grosser/parallel_tests with incremental summarized output. Based on Discourse and Rubygems work in this area."
   spec.homepage = "https://github.com/serpapi/turbo_tests"