From 5cdf8edee9ebdb64b62a93994cb36e9fec77608f Mon Sep 17 00:00:00 2001
From: Hongzhan Chen <hongzhan.chen@intel.com>
Date: Fri, 2 Aug 2019 01:17:30 -0400
Subject: [PATCH] add ruby unit test

---
 tests/ruby/ruby.bats                          | 250 ++++++++++++++++++
 .../ruby/testcase/arraysearchandsubstitute.rb |  15 ++
 tests/ruby/testcase/attaccessor.rb            |  11 +
 tests/ruby/testcase/calllambda.rb             |  15 ++
 tests/ruby/testcase/casestatement.rb          |  11 +
 tests/ruby/testcase/class.rb                  |  18 ++
 tests/ruby/testcase/classaccount.rb           |  36 +++
 tests/ruby/testcase/classinheritance.rb       |  15 ++
 .../ruby/testcase/classscopemethodfunction.rb |  28 ++
 tests/ruby/testcase/codeblock.rb              |   5 +
 tests/ruby/testcase/collectmethod.rb          |   5 +
 .../ruby/testcase/convertstringstosymbols.rb  |   8 +
 .../ruby/testcase/convertsymbolstostrings.rb  |   2 +
 tests/ruby/testcase/globalprivatevariable.rb  |  23 ++
 tests/ruby/testcase/hashhistogram.rb          |   9 +
 tests/ruby/testcase/hashiteration.rb          |   7 +
 .../ruby/testcase/hashlookupsymbolvsstring.rb |  15 ++
 tests/ruby/testcase/include.rb                |  15 ++
 tests/ruby/testcase/lambdamethodsort.rb       |  13 +
 tests/ruby/testcase/methodcapitalize.rb       |  10 +
 tests/ruby/testcase/methodgreeter.rb          |   6 +
 .../testcase/methodprimenumbercalculator.rb   |  20 ++
 tests/ruby/testcase/modules.rb                |  28 ++
 tests/ruby/testcase/multipleinheritance.rb    |  25 ++
 tests/ruby/testcase/privatemethod.rb          |  17 ++
 tests/ruby/testcase/procs.rb                  |  18 ++
 tests/ruby/testcase/selectivehash.rb          |  16 ++
 tests/ruby/testcase/sortandorganizearray.rb   |  13 +
 tests/ruby/testcase/soryarraybyalphabet.rb    |   8 +
 tests/ruby/testcase/stringinterpolation.rb    |   7 +
 tests/ruby/testcase/substituion.rb            |  13 +
 tests/ruby/testcase/variablescope.rb          |  29 ++
 tests/ruby/testcase/virtualcomputer.rb        |  23 ++
 tests/ruby/testcase/yieldblocklambda.rb       |  11 +
 tests/ruby/testcase/yieldingwithparameters.rb |  10 +
 35 files changed, 755 insertions(+)
 create mode 100755 tests/ruby/ruby.bats
 create mode 100644 tests/ruby/testcase/arraysearchandsubstitute.rb
 create mode 100644 tests/ruby/testcase/attaccessor.rb
 create mode 100644 tests/ruby/testcase/calllambda.rb
 create mode 100644 tests/ruby/testcase/casestatement.rb
 create mode 100644 tests/ruby/testcase/class.rb
 create mode 100644 tests/ruby/testcase/classaccount.rb
 create mode 100644 tests/ruby/testcase/classinheritance.rb
 create mode 100644 tests/ruby/testcase/classscopemethodfunction.rb
 create mode 100644 tests/ruby/testcase/codeblock.rb
 create mode 100644 tests/ruby/testcase/collectmethod.rb
 create mode 100644 tests/ruby/testcase/convertstringstosymbols.rb
 create mode 100644 tests/ruby/testcase/convertsymbolstostrings.rb
 create mode 100644 tests/ruby/testcase/globalprivatevariable.rb
 create mode 100644 tests/ruby/testcase/hashhistogram.rb
 create mode 100644 tests/ruby/testcase/hashiteration.rb
 create mode 100644 tests/ruby/testcase/hashlookupsymbolvsstring.rb
 create mode 100644 tests/ruby/testcase/include.rb
 create mode 100644 tests/ruby/testcase/lambdamethodsort.rb
 create mode 100644 tests/ruby/testcase/methodcapitalize.rb
 create mode 100644 tests/ruby/testcase/methodgreeter.rb
 create mode 100644 tests/ruby/testcase/methodprimenumbercalculator.rb
 create mode 100644 tests/ruby/testcase/modules.rb
 create mode 100644 tests/ruby/testcase/multipleinheritance.rb
 create mode 100644 tests/ruby/testcase/privatemethod.rb
 create mode 100644 tests/ruby/testcase/procs.rb
 create mode 100644 tests/ruby/testcase/selectivehash.rb
 create mode 100644 tests/ruby/testcase/sortandorganizearray.rb
 create mode 100644 tests/ruby/testcase/soryarraybyalphabet.rb
 create mode 100644 tests/ruby/testcase/stringinterpolation.rb
 create mode 100644 tests/ruby/testcase/substituion.rb
 create mode 100644 tests/ruby/testcase/variablescope.rb
 create mode 100644 tests/ruby/testcase/virtualcomputer.rb
 create mode 100644 tests/ruby/testcase/yieldblocklambda.rb
 create mode 100644 tests/ruby/testcase/yieldingwithparameters.rb

diff --git a/tests/ruby/ruby.bats b/tests/ruby/ruby.bats
new file mode 100755
index 0000000..5634ef1
--- /dev/null
+++ b/tests/ruby/ruby.bats
@@ -0,0 +1,250 @@
+#!/usr/bin/env bats
+# *-*- Mode: sh; c-basic-offset: 8; indent-tabs-mode: nil -*-*
+
+load ../utils
+
+#
+# * Array search and substitution
+#
+@test "array search and substitution" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby bash -c "echo Lorem | ruby testcase/arraysearchandsubstitute.rb | grep REDACTED"
+}
+
+#
+# * Attribute accessor
+#
+@test "attribute accessor" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby bash -c "ruby testcase/attaccessor.rb | grep Dennis"
+}
+
+#
+# * Call lamda
+#
+@test "call lamda" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/calllambda.rb
+}
+
+#
+# * Case statement
+#
+@test "case statement" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby bash -c "echo English | ruby testcase/casestatement.rb | grep Hello!"
+}
+
+#
+# * Class Account
+#
+@test "class acount" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/classaccount.rb
+}
+
+#
+# * Class inheritance
+#
+@test "class inheritance" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby bash -c "ruby testcase/classinheritance.rb | grep Meow"
+}
+
+#
+# * Basic Class
+#
+@test "basi class" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/class.rb
+}
+
+#
+# * Static functions
+#
+@test "static functions" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby bash -c "ruby testcase/classscopemethodfunction.rb | grep -E 'eric.*you'"
+}
+
+#
+# * Code Block
+#
+@test "code block" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/codeblock.rb
+}
+
+#
+# * Collect Method
+#
+@test "collect method" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby bash -c "ruby testcase/collectmethod.rb | grep -E '*\!$'"
+}
+
+#
+# * Convert string to symbols
+#
+@test "convert string to symbols" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/convertstringstosymbols.rb
+}
+
+#
+# * Convert symbol to string
+#
+@test "convert symbol to string" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby bash -c "ruby testcase/convertsymbolstostrings.rb | grep 'hello world'"
+}
+
+#
+# * Private global variable 
+#
+@test "private global variable" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby bash -c "ruby testcase/globalprivatevariable.rb &>/dev/stdout | grep 'private method'"
+}
+
+#
+# * Hash Histogram
+#
+@test "hash histogram" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby bash -c "echo 'this is a test of the test' | ruby testcase/hashhistogram.rb"
+}
+
+#
+# * Hash Iteration
+#
+@test "hash iteration" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/hashiteration.rb
+}
+
+#
+# * Hash lockup symbol vs string
+#
+@test "hash lockup symbol vs string" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/hashlookupsymbolvsstring.rb
+}
+
+#
+# * Include
+#
+@test "include" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/include.rb
+}
+
+#
+# * Lamda method sort
+#
+@test "lamda method sort" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/lambdamethodsort.rb
+}
+
+#
+# * Method Capitalize
+#
+@test "method capitalize" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby bash -c "ruby testcase/methodcapitalize.rb | grep -vE '^(r|j)'"
+}
+
+#
+# * Method Greeter
+#
+@test "method greeter" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby bash -c "ruby testcase/methodgreeter.rb | grep 'hello jared nice to meet you!'"
+}
+
+#
+# * Prime number calculator
+#
+@test "method greeter" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/methodprimenumbercalculator.rb
+}
+
+#
+# * Module
+#
+@test "module" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/modules.rb
+}
+
+#
+# * Module
+#
+@test "module" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/multipleinheritance.rb
+}
+
+#
+# * Private Method
+#
+@test "private method" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby bash -c "ruby testcase/privatemethod.rb &> /dev/stdout | grep 'private method'"
+}
+
+#
+# * Procedure
+#
+@test "Procedure" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/procs.rb
+}
+
+#
+# * Selective Hash
+#
+@test "selective hash" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/selectivehash.rb
+}
+
+#
+# * Sort and organize array
+#
+@test "sort and organize array" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/sortandorganizearray.rb
+}
+
+#
+# * Sort array by alphabet
+#
+@test "sort array by alphabet" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/soryarraybyalphabet.rb
+}
+
+#
+# * String interpolation
+#
+@test "string interpolation" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/stringinterpolation.rb
+}
+
+#
+# * String interpolation
+#
+@test "string interpolation" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby bash -c "echo 'this what it is' | ruby testcase/substituion.rb | grep -v 's'"
+}
+
+#
+# * Variable scope
+#
+@test "variable scope" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/variablescope.rb
+}
+
+#
+# * Variable scope
+#
+@test "variable scope" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/variablescope.rb
+}
+
+#
+# * Virtual computer (scope variables)
+#
+@test "virtual computer (scope variables)" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/virtualcomputer.rb
+}
+
+#
+# * Yield block lamda
+#
+@test "yeald block lamda" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/yieldblocklambda.rb
+}
+
+#
+# * Yielding with parameters
+#
+@test "yealding with parameters" {
+    docker run --rm -v "$PWD":/src -w /src clearlinux/ruby ruby testcase/yieldingwithparameters.rb
+}
+
diff --git a/tests/ruby/testcase/arraysearchandsubstitute.rb b/tests/ruby/testcase/arraysearchandsubstitute.rb
new file mode 100644
index 0000000..2e9756c
--- /dev/null
+++ b/tests/ruby/testcase/arraysearchandsubstitute.rb
@@ -0,0 +1,15 @@
+text = """
+Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus a nisl quis orci mattis vestibulum nec a orci. Sed sit amet libero vel purus tincidunt dictum. Curabitur sit amet quam justo. Nam rutrum tortor a tempor semper. Vivamus rhoncus commodo tortor vel vehicula. Fusce lobortis massa arcu, a ornare metus consequat ac. Nam urna est, vulputate a libero nec, accumsan convallis felis. Cras feugiat arcu tortor, malesuada ultrices arcu pretium a
+"""
+puts "Word to redact: "
+redact = gets.chomp
+
+words = text.split(" ")
+
+words.each do |word|
+  if word != redact
+    print word + " "
+  else
+    print "REDACTED "
+  end
+end
diff --git a/tests/ruby/testcase/attaccessor.rb b/tests/ruby/testcase/attaccessor.rb
new file mode 100644
index 0000000..f8c453b
--- /dev/null
+++ b/tests/ruby/testcase/attaccessor.rb
@@ -0,0 +1,11 @@
+class Person
+    attr_accessor :name
+
+    def greeting
+        "Hello #{@name}"
+    end
+end
+
+person = Person.new
+person.name = "Dennis"
+puts person.greeting # => "Hello Dennis"
diff --git a/tests/ruby/testcase/calllambda.rb b/tests/ruby/testcase/calllambda.rb
new file mode 100644
index 0000000..1e0ec89
--- /dev/null
+++ b/tests/ruby/testcase/calllambda.rb
@@ -0,0 +1,15 @@
+def lambda_demo(a_lambda)
+  puts "I'm the method!"
+  a_lambda.call
+end
+
+lambda_demo(lambda { puts "I'm the lambda!" })
+
+
+def jared(werba)
+    puts "still unsure"
+    werba.call
+end
+
+jared(lambda {puts "why is werba.call inside of the method?"})
+jared(lambda {puts "will this work?!!?!?!!"})
\ No newline at end of file
diff --git a/tests/ruby/testcase/casestatement.rb b/tests/ruby/testcase/casestatement.rb
new file mode 100644
index 0000000..49fa4c4
--- /dev/null
+++ b/tests/ruby/testcase/casestatement.rb
@@ -0,0 +1,11 @@
+puts "Hello there!"
+greeting = gets.chomp
+
+# Add your case statement below!
+case greeting
+when "English" then puts "Hello!"
+when "French" then puts "Bonjour"
+when "German" then puts "Guten Tag!"
+when "Finnish" then putrs "Haloo!"
+else puts "i dont know that lang bro"
+end
\ No newline at end of file
diff --git a/tests/ruby/testcase/class.rb b/tests/ruby/testcase/class.rb
new file mode 100644
index 0000000..d343e7c
--- /dev/null
+++ b/tests/ruby/testcase/class.rb
@@ -0,0 +1,18 @@
+class Language
+  def initialize(name, creator)
+    @name = name
+    @creator = creator
+  end
+	
+  def description
+    puts "I'm #{@name} and I was created by #{@creator}!"
+  end
+end
+
+ruby = Language.new("Ruby", "Yukihiro Matsumoto")
+python = Language.new("Python", "Guido van Rossum")
+javascript = Language.new("JavaScript", "Brendan Eich")
+
+ruby.description
+python.description
+javascript.description
\ No newline at end of file
diff --git a/tests/ruby/testcase/classaccount.rb b/tests/ruby/testcase/classaccount.rb
new file mode 100644
index 0000000..c3f72b5
--- /dev/null
+++ b/tests/ruby/testcase/classaccount.rb
@@ -0,0 +1,36 @@
+class Account
+  attr_reader :name, :balance
+  def initialize(name, balance=100)
+    @name = name
+    @balance = balance
+  end
+  
+  def display_balance(pin_number)
+    puts pin_number == pin ? "Balance: $#{@balance}." : pin_error
+  end
+  
+  def withdraw(pin_number, amount)
+    if pin_number == pin
+      @balance -= amount
+      puts "Withdrew #{amount}. New balance: $#{@balance}."
+    else
+      puts pin_error
+    end
+  end
+  
+  private
+  
+  def pin
+    @pin = 1234
+  end
+  
+  def pin_error
+    "Access denied: incorrect PIN."
+  end
+end
+
+my_account = Account.new("Eric", 1_000_000)
+my_account.withdraw(11, 500_000)
+my_account.display_balance(1234)
+my_account.withdraw(1234, 500_000)
+my_account.display_balance(1234)
\ No newline at end of file
diff --git a/tests/ruby/testcase/classinheritance.rb b/tests/ruby/testcase/classinheritance.rb
new file mode 100644
index 0000000..0592dfb
--- /dev/null
+++ b/tests/ruby/testcase/classinheritance.rb
@@ -0,0 +1,15 @@
+class Mammal  
+  def breathe  
+    puts "inhale and exhale"  
+  end  
+end
+
+class Cat < Mammal  
+  def speak  
+    puts "Meow"  
+  end  
+end  
+
+rani = Cat.new  
+rani.breathe  
+rani.speak 
diff --git a/tests/ruby/testcase/classscopemethodfunction.rb b/tests/ruby/testcase/classscopemethodfunction.rb
new file mode 100644
index 0000000..8b64712
--- /dev/null
+++ b/tests/ruby/testcase/classscopemethodfunction.rb
@@ -0,0 +1,28 @@
+class Machine
+  @@users = {}
+  
+  def initialize(username, password)
+    @username = username
+    @password = password
+    @@users[username] = password
+    @files = {}
+  end
+  
+  def create(filename)
+    time = Time.now
+    @files[filename] = time
+    puts "#{filename} was created by #{@username} at #{time}."
+  end
+  
+  def Machine.get_users
+    @@users
+  end
+end
+
+my_machine = Machine.new("eric", 01234)
+your_machine = Machine.new("you", 56789)
+
+my_machine.create("groceries.txt")
+your_machine.create("todo.txt")
+
+puts "Users: #{Machine.get_users}"
\ No newline at end of file
diff --git a/tests/ruby/testcase/codeblock.rb b/tests/ruby/testcase/codeblock.rb
new file mode 100644
index 0000000..148e61d
--- /dev/null
+++ b/tests/ruby/testcase/codeblock.rb
@@ -0,0 +1,5 @@
+1.times do
+  puts "I'm a code block!"
+end
+
+5.times { puts "As am I!" }
\ No newline at end of file
diff --git a/tests/ruby/testcase/collectmethod.rb b/tests/ruby/testcase/collectmethod.rb
new file mode 100644
index 0000000..ca83d16
--- /dev/null
+++ b/tests/ruby/testcase/collectmethod.rb
@@ -0,0 +1,5 @@
+abc = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j"]
+
+# Add your code below!
+
+puts abc.collect{ |x| x + "!"}
diff --git a/tests/ruby/testcase/convertstringstosymbols.rb b/tests/ruby/testcase/convertstringstosymbols.rb
new file mode 100644
index 0000000..b26daf9
--- /dev/null
+++ b/tests/ruby/testcase/convertstringstosymbols.rb
@@ -0,0 +1,8 @@
+strings = ["HTML", "CSS", "JavaScript", "Python", "Ruby"]
+
+# Add your code below!
+symbols = []
+strings.each { |x| symbols.push(x.to_sym) }
+
+puts symbols
+
diff --git a/tests/ruby/testcase/convertsymbolstostrings.rb b/tests/ruby/testcase/convertsymbolstostrings.rb
new file mode 100644
index 0000000..b00c83c
--- /dev/null
+++ b/tests/ruby/testcase/convertsymbolstostrings.rb
@@ -0,0 +1,2 @@
+world = :world
+puts "hello #{world}"
diff --git a/tests/ruby/testcase/globalprivatevariable.rb b/tests/ruby/testcase/globalprivatevariable.rb
new file mode 100644
index 0000000..f0f63c0
--- /dev/null
+++ b/tests/ruby/testcase/globalprivatevariable.rb
@@ -0,0 +1,23 @@
+class Person
+  def initialize(name, age)
+    @name = name
+    @age = age
+  end
+  
+  public    # This method can be called from outside the class.
+  
+  def about_me
+    puts "I'm #{@name} and I'm #{@age} years old!"
+  end
+  
+  private   # This method can't!
+  
+  def bank_account_number
+    @account_number = 12345
+    puts "My bank account number is #{@account_number}."
+  end
+end
+
+eric = Person.new("Eric", 26)
+eric.about_me
+eric.bank_account_number
\ No newline at end of file
diff --git a/tests/ruby/testcase/hashhistogram.rb b/tests/ruby/testcase/hashhistogram.rb
new file mode 100644
index 0000000..1c23a1b
--- /dev/null
+++ b/tests/ruby/testcase/hashhistogram.rb
@@ -0,0 +1,9 @@
+puts "Text please: "
+text = gets.chomp
+
+words = text.split(" ")
+frequencies = Hash.new(0)
+words.each { |word| frequencies[word] += 1 }
+frequencies = frequencies.sort_by {|a, b| b }
+frequencies.reverse!
+frequencies.each { |word, frequency| puts word + " " + frequency.to_s }
\ No newline at end of file
diff --git a/tests/ruby/testcase/hashiteration.rb b/tests/ruby/testcase/hashiteration.rb
new file mode 100644
index 0000000..e76d208
--- /dev/null
+++ b/tests/ruby/testcase/hashiteration.rb
@@ -0,0 +1,7 @@
+secret_identities = { "The Batman" => "Bruce Wayne",
+  "Superman" => "Clark Kent",
+  "Wonder Woman" => "Diana Prince",
+  "Freakazoid" => "Dexter Douglas"
+}
+  
+secret_identities.each { |name, ego| puts "#{name} " ' : ' " #{ego}" }
\ No newline at end of file
diff --git a/tests/ruby/testcase/hashlookupsymbolvsstring.rb b/tests/ruby/testcase/hashlookupsymbolvsstring.rb
new file mode 100644
index 0000000..16498d3
--- /dev/null
+++ b/tests/ruby/testcase/hashlookupsymbolvsstring.rb
@@ -0,0 +1,15 @@
+require 'benchmark'
+
+string_AZ = Hash[("a".."z").to_a.zip((1..26).to_a)]
+symbol_AZ = Hash[(:a..:z).to_a.zip((1..26).to_a)]
+
+string_time = Benchmark.realtime do
+  100_000.times { string_AZ["r"] }
+end
+
+symbol_time = Benchmark.realtime do
+  100_000.times { symbol_AZ[:r] }
+end
+
+puts "String time: #{string_time} seconds."
+puts "Symbol time: #{symbol_time} seconds."
\ No newline at end of file
diff --git a/tests/ruby/testcase/include.rb b/tests/ruby/testcase/include.rb
new file mode 100644
index 0000000..475f786
--- /dev/null
+++ b/tests/ruby/testcase/include.rb
@@ -0,0 +1,15 @@
+class Angle
+  include Math
+  attr_accessor :radians
+  
+  def initialize(radians)
+    @radians = radians
+  end
+  
+  def cosine
+    cos(@radians)
+  end
+end
+
+acute = Angle.new(1)
+puts acute.cosine
diff --git a/tests/ruby/testcase/lambdamethodsort.rb b/tests/ruby/testcase/lambdamethodsort.rb
new file mode 100644
index 0000000..accc7e5
--- /dev/null
+++ b/tests/ruby/testcase/lambdamethodsort.rb
@@ -0,0 +1,13 @@
+crew = {
+  captain: "Picard",
+  first_officer: "Riker",
+  lt_cdr: "Data",
+  lt: "Worf",
+  ensign: "Ro",
+  counselor: "Troi",
+  chief_engineer: "LaForge",
+  doctor: "Crusher"
+}
+# Add your code below!
+first_half = lambda{ |key, value| value < "M" }
+puts crew.select(&first_half)
diff --git a/tests/ruby/testcase/methodcapitalize.rb b/tests/ruby/testcase/methodcapitalize.rb
new file mode 100644
index 0000000..31435eb
--- /dev/null
+++ b/tests/ruby/testcase/methodcapitalize.rb
@@ -0,0 +1,10 @@
+# method that capitalizes a word
+def capitalize(string) 
+  puts "#{string[0].upcase}#{string[1..-1]}"
+end
+
+capitalize("ryan") # prints "Ryan"
+capitalize("jane") # prints "Jane"
+
+# block that capitalizes each string in the array
+["ryan", "jane"].each {|string| puts "#{string[0].upcase}#{string[1..-1]}"} # prints "Ryan", then "Jane"
\ No newline at end of file
diff --git a/tests/ruby/testcase/methodgreeter.rb b/tests/ruby/testcase/methodgreeter.rb
new file mode 100644
index 0000000..f815480
--- /dev/null
+++ b/tests/ruby/testcase/methodgreeter.rb
@@ -0,0 +1,6 @@
+def greeter(name)
+    return  print 'hello ' + name + ' nice to meet you!'
+end
+greeter ("jared")
+
+
diff --git a/tests/ruby/testcase/methodprimenumbercalculator.rb b/tests/ruby/testcase/methodprimenumbercalculator.rb
new file mode 100644
index 0000000..8323355
--- /dev/null
+++ b/tests/ruby/testcase/methodprimenumbercalculator.rb
@@ -0,0 +1,20 @@
+def prime(n)
+  puts "That's not an integer." unless n.is_a? Integer
+  is_prime = true
+  for i in 2..n-1
+    if n % i == 0
+      is_prime = false
+    end
+  end
+  if is_prime
+    puts "#{n} is prime!"
+  else
+    puts "#{n} is not prime."
+  end
+end
+
+prime(2)
+prime(9)
+prime(11)
+prime(51)
+prime(97)
\ No newline at end of file
diff --git a/tests/ruby/testcase/modules.rb b/tests/ruby/testcase/modules.rb
new file mode 100644
index 0000000..946db32
--- /dev/null
+++ b/tests/ruby/testcase/modules.rb
@@ -0,0 +1,28 @@
+module Action
+  def jump
+    @distance = rand(4) + 2
+    puts "#{@name} jumped forward #{@distance} feet!"
+  end
+end
+
+class Rabbit
+  include Action
+  attr_reader :name
+  def initialize(name)
+    @name = name
+  end
+end
+
+class Cricket
+  include Action
+  attr_reader :name
+  def initialize(name)
+    @name = name
+  end
+end
+
+peter = Rabbit.new("Peter")
+jiminy = Cricket.new("Jiminy")
+
+peter.jump
+jiminy.jump
\ No newline at end of file
diff --git a/tests/ruby/testcase/multipleinheritance.rb b/tests/ruby/testcase/multipleinheritance.rb
new file mode 100644
index 0000000..867ab55
--- /dev/null
+++ b/tests/ruby/testcase/multipleinheritance.rb
@@ -0,0 +1,25 @@
+module Week
+  FIRST_DAY = "Sunday"
+  def Week.weeks_in_month
+    puts "You have four weeks in a month"
+  end
+  def Week.weeks_in_year
+    puts "You have 52 weeks in a year"
+  end
+end
+
+
+class Decade
+  include Week
+  no_of_yrs=10
+  def no_of_months
+    puts Week::FIRST_DAY
+    number=10*12
+    puts number
+  end
+end
+d1=Decade.new
+puts Week::FIRST_DAY
+Week.weeks_in_month
+Week.weeks_in_year
+d1.no_of_months
diff --git a/tests/ruby/testcase/privatemethod.rb b/tests/ruby/testcase/privatemethod.rb
new file mode 100644
index 0000000..68d1752
--- /dev/null
+++ b/tests/ruby/testcase/privatemethod.rb
@@ -0,0 +1,17 @@
+class Application
+  attr_accessor :status
+  def initialize; end
+private
+def password
+    @password = 12345
+    end
+    
+    public
+  def print_status
+      puts "All systems go!"
+  end
+end
+
+app = Application.new()
+app.print_status()
+app.password
diff --git a/tests/ruby/testcase/procs.rb b/tests/ruby/testcase/procs.rb
new file mode 100644
index 0000000..d43d155
--- /dev/null
+++ b/tests/ruby/testcase/procs.rb
@@ -0,0 +1,18 @@
+# Here at the amusement park, you have to be four feet tall
+# or taller to ride the roller coaster. Let's use .select on
+# each group to get only the ones four feet tall or taller.
+
+group_1 = [4.1, 5.5, 3.2, 3.3, 6.1, 3.9, 4.7]
+group_2 = [7.0, 3.8, 6.2, 6.1, 4.4, 4.9, 3.0]
+group_3 = [5.5, 5.1, 3.9, 4.3, 4.9, 3.2, 3.2]
+
+
+over_4_feet = Proc.new { |x| x >= 4 }
+
+
+print "group 1:  #{group_1.select(&over_4_feet)}"
+puts
+print "group 2: #{group_2.select(&over_4_feet)}"
+puts
+print "group 3: #{group_3.select(&over_4_feet)}"
+
diff --git a/tests/ruby/testcase/selectivehash.rb b/tests/ruby/testcase/selectivehash.rb
new file mode 100644
index 0000000..e3238b2
--- /dev/null
+++ b/tests/ruby/testcase/selectivehash.rb
@@ -0,0 +1,16 @@
+movie_ratings = {
+  memento: 3,
+  primer: 3.5,
+  the_matrix: 3,
+  truman_show: 4,
+  red_dawn: 1.5,
+  skyfall: 4,
+  alex_cross: 2,
+  uhf: 1,
+  lion_king: 3.5
+}
+# Add your code below!
+
+good_movies = movie_ratings.select { |k, v| v > 3 }
+print good_movies
+
diff --git a/tests/ruby/testcase/sortandorganizearray.rb b/tests/ruby/testcase/sortandorganizearray.rb
new file mode 100644
index 0000000..c793ae8
--- /dev/null
+++ b/tests/ruby/testcase/sortandorganizearray.rb
@@ -0,0 +1,13 @@
+def alphabetize(arr, rev=false)
+  if rev
+    arr.sort { |item1, item2| item2 <=> item1 }
+  else
+    arr.sort { |item1, item2| item1 <=> item2 }
+  end
+end
+
+books = ["Heart of Darkness", "Code Complete", "The Lorax", "The Prophet", "Absalom, Absalom!"]
+
+puts "A-Z: #{alphabetize(books)}"
+puts "Z-A: #{alphabetize(books, true)}"
+
diff --git a/tests/ruby/testcase/soryarraybyalphabet.rb b/tests/ruby/testcase/soryarraybyalphabet.rb
new file mode 100644
index 0000000..757977b
--- /dev/null
+++ b/tests/ruby/testcase/soryarraybyalphabet.rb
@@ -0,0 +1,8 @@
+books = ["Charlie and the Chocolate Factory", "War and Peace", "Utopia", "A Brief History of Time", "A Wrinkle in Time"]
+
+# To sort our books in ascending order, in-place
+books.sort! { |firstBook, secondBook| firstBook <=> secondBook }
+
+# Sort your books in descending order, in-place below
+
+books.sort! {   |secondBook, firstBook| firstBook <=> secondBook }
\ No newline at end of file
diff --git a/tests/ruby/testcase/stringinterpolation.rb b/tests/ruby/testcase/stringinterpolation.rb
new file mode 100644
index 0000000..9db6aa1
--- /dev/null
+++ b/tests/ruby/testcase/stringinterpolation.rb
@@ -0,0 +1,7 @@
+favorite_things = ["Ruby", "espresso", "exercise"]
+
+puts "A few of my favorite things:"
+
+favorite_things.each do |thing|
+  puts "I love "  "#{thing}!"
+end
\ No newline at end of file
diff --git a/tests/ruby/testcase/substituion.rb b/tests/ruby/testcase/substituion.rb
new file mode 100644
index 0000000..71bebf4
--- /dev/null
+++ b/tests/ruby/testcase/substituion.rb
@@ -0,0 +1,13 @@
+# Substituion Script
+
+print "Thtring, pleathe!: "
+user_input = gets.chomp
+user_input.downcase!
+
+if user_input.include? "s"
+  user_input.gsub!(/s/, "th")
+else
+  puts "Nothing to do here!"
+end
+  
+puts "#{user_input}"
diff --git a/tests/ruby/testcase/variablescope.rb b/tests/ruby/testcase/variablescope.rb
new file mode 100644
index 0000000..65fdbaa
--- /dev/null
+++ b/tests/ruby/testcase/variablescope.rb
@@ -0,0 +1,29 @@
+class Computer
+  $manufacturer = "Apple Computer, Inc."
+  @@files = {hello: "Hello, world!"}
+  
+  def initialize(username, password)
+    @username = username
+    @password = password
+  end
+  
+  def current_user
+    @username
+  end
+  
+  def self.display_files
+    @@files
+  end
+end
+
+# Make a new Computer instance:
+hal = Computer.new("Dave", 12345)
+
+puts "Current user: #{hal.current_user}"
+# @username belongs to the hal instance.
+
+puts "Manufacturer: #{$manufacturer}"
+# $manufacturer is global! We can get it directly.
+
+puts "Files: #{Computer.display_files}"
+# @@files belongs to the Computer class.
\ No newline at end of file
diff --git a/tests/ruby/testcase/virtualcomputer.rb b/tests/ruby/testcase/virtualcomputer.rb
new file mode 100644
index 0000000..1da3c6c
--- /dev/null
+++ b/tests/ruby/testcase/virtualcomputer.rb
@@ -0,0 +1,23 @@
+class Computer
+    @@users = {}
+    def initialize(username, password)
+        @username = username
+        @password = password
+        @files = {}
+        @@users[username]=password
+end
+    def create(filename)
+        time = Time.now
+        @files[filename]=time
+    puts "a file was made"
+end
+
+def Computer.get_users
+    return @@users
+end
+
+end
+
+my_computer = Computer.new("jared", "werba")
+
+puts Computer.get_users
diff --git a/tests/ruby/testcase/yieldblocklambda.rb b/tests/ruby/testcase/yieldblocklambda.rb
new file mode 100644
index 0000000..ca96e81
--- /dev/null
+++ b/tests/ruby/testcase/yieldblocklambda.rb
@@ -0,0 +1,11 @@
+def block_test
+  puts "We're in the method!"
+  puts "Yielding to the block..."
+  yield
+  yield
+  puts "We're back in the method!"
+end
+
+block_test { puts ">>>>>>>>>> We're in the block!" }
+
+block_test { puts "below it?!?>>>>>>>>>>>>"}
\ No newline at end of file
diff --git a/tests/ruby/testcase/yieldingwithparameters.rb b/tests/ruby/testcase/yieldingwithparameters.rb
new file mode 100644
index 0000000..952c197
--- /dev/null
+++ b/tests/ruby/testcase/yieldingwithparameters.rb
@@ -0,0 +1,10 @@
+def yield_name(name)
+  puts "In the method! Let's yield."
+  yield name
+  puts "Block complete! Back in the method."
+end
+
+yield_name("Eric") { |name| puts "My name is #{name}." }
+
+# Now call the method with your name!
+yield_name("jared"){|m| puts "ok"}
\ No newline at end of file