From 83d5bbbe0c8bcc4c62daa3181d46b2ac7f1a2fa1 Mon Sep 17 00:00:00 2001
From: laneia <laneiamurray@gmail.com>
Date: Tue, 26 Feb 2019 11:58:17 -0800
Subject: [PATCH 01/11] Initial work waves 1-3

---
 main.rb         | 110 ++++++++++++++++++++++++++++++++++++++++++++++++
 planet.rb       |  15 +++++++
 solar_system.rb |  33 +++++++++++++++
 3 files changed, 158 insertions(+)
 create mode 100644 main.rb
 create mode 100644 planet.rb
 create mode 100644 solar_system.rb

diff --git a/main.rb b/main.rb
new file mode 100644
index 00000000..5dc5ff30
--- /dev/null
+++ b/main.rb
@@ -0,0 +1,110 @@
+require_relative "planet"
+require_relative "solar_system"
+
+def add_new_planet
+  puts "Okay, what's the name of the planet we're missing?"
+  name = gets.chomp
+  puts "Cool, what color is it?"
+  color = gets.chomp
+  puts "What about its mass in kilograms?"
+  mass_kg = gets.chomp
+  puts "Now I need its distance from the sun in kilometers."
+  distance_from_sun_km = gets.chomp
+  puts "And finally, what's a fun fact about this planet?"
+  fun_fact = gets.chomp
+
+  new_planet = Planet.new(name, color, mass_kg, distance_from_sun_km, fun_fact)
+  #return new_planet
+end
+
+def main
+  solar_system = SolarSystem.new("Sol")
+
+  mercury = Planet.new("Mercury", "grey", 0.33e24, 57.9e6, "it has ice in craters that never receive sunlight.")
+  solar_system.add_planet(mercury)
+
+  venus = Planet.new("Venus", "yellow", 4.87e24, 108.2e6, "it probably had a moon, but collided with it after another impact reversed the planet's spin.")
+  solar_system.add_planet(venus)
+
+  earth = Planet.new("Earth", "blue", 5.97e24, 149.6e6, "it has more life than the rest of the known universe, as far as we know.")
+  solar_system.add_planet(earth)
+
+  mars = Planet.new("Mars", "red", 0.64e24, 227.9e6, "it has liquid water.")
+  solar_system.add_planet(mars)
+
+  jupiter = Planet.new("Jupiter", "orange", 1898e24, 778.3e6, "its gravity breaks apart many comets.")
+  solar_system.add_planet(jupiter)
+
+  saturn = Planet.new("Saturn", "gold", 569e24, 1427e6, "it's not known how or when its rings formed.")
+  solar_system.add_planet(saturn)
+
+  uranus = Planet.new("Uranus", "blue", 86.8e24, 2871e6, "it also has large storms in its atmosphere, like Jupiter.")
+  solar_system.add_planet(uranus)
+
+  neptune = Planet.new("Neptune", "blue", 102e24, 5913e6, "the wind can go as fast as 1,700 km/hr - faster than the speed of sound.")
+  solar_system.add_planet(neptune)
+
+  continue = true
+
+  while continue == true
+    puts "What would you like to do next?"
+    puts "list planets | planet details | add planet | exit"
+    get_input = gets.chomp
+    if get_input == "exit"
+      puts "See ya!"
+      return continue == false
+    elsif get_input == "list planets"
+      puts solar_system.list_planets
+    elsif get_input == "planet details"
+      puts solar_system.find_planet_by_name
+    elsif get_input == "add planet"
+      solar_system.add_planet(add_new_planet)
+      puts "Planet added to the solar system!"
+    else
+      puts "Invalid prompt."
+    end
+  end
+end
+
+#   unless the_input == "exit"
+#     if the_input == "list planets"
+#       puts solar_system.list_planets
+#       get_input
+#     elsif the_input == "planet details"
+#       puts solar_system.find_planet_by_name
+#       get_input
+#     elsif the_input == "add planet"
+#       add_new_planet
+#       puts solar_system.add_planet(add_new_planet)
+#       get_input
+#     else
+#       puts "Invalid prompt."
+#     end
+#   else puts "See ya!"   end
+
+#   puts "The farthest planet from Sol is #{neptune.name} at #{neptune.distance_from_sun_km} kilometers!"
+
+#   puts "The biggest planet by far is #{jupiter.name} at #{jupiter.mass_kg} kilograms!"
+
+#   puts saturn.summary
+
+#   list = solar_system.list_planets
+#   puts list
+
+#   found_planet = solar_system.find_planet_by_name("earth")
+#   puts found_planet
+#   puts found_planet.summary
+
+puts "Welcome to the solar system!"
+main
+
+#   def get_input
+#     puts "What would you like to do next?"
+#     puts "list planets | planet details | add planet | exit"
+#     return gets.chomp
+#     # return user_input
+#   end
+
+#   puts "What would you like to do next?"
+#   puts "list planets | planet details | add planet | exit"
+#   the_input = gets.chomp
diff --git a/planet.rb b/planet.rb
new file mode 100644
index 00000000..ee3d8899
--- /dev/null
+++ b/planet.rb
@@ -0,0 +1,15 @@
+class Planet
+  attr_reader :name, :color, :mass_kg, :distance_from_sun_km, :fun_fact
+
+  def initialize(name, color, mass_kg, distance_from_sun_km, fun_fact)
+    @name = name
+    @color = color
+    @mass_kg = mass_kg
+    @distance_from_sun_km = distance_from_sun_km
+    @fun_fact = fun_fact
+  end
+
+  def summary
+    return "#{@name} is a #{@color} planet that weighs #{mass_kg} kilograms and orbits #{@distance_from_sun_km} kilometers from the sun.  A cool fact about #{@name} is that #{fun_fact}"
+  end
+end
diff --git a/solar_system.rb b/solar_system.rb
new file mode 100644
index 00000000..01c21f0b
--- /dev/null
+++ b/solar_system.rb
@@ -0,0 +1,33 @@
+require_relative "planet"
+
+class SolarSystem
+  attr_reader :star_name, :planets
+
+  def initialize(star_name)
+    @star_name = star_name
+    @planets = []
+    @planet_print = ["Planets orbiting #{star_name}"]
+  end
+
+  def add_planet(planet)
+    @planets << planet
+  end
+
+  def list_planets
+    @planets.each_index do |index|
+      @planet_print << "#{index + 1}. #{@planets[index].name}"
+    end
+    return @planet_print
+  end
+
+  def find_planet_by_name
+    puts "Which planet would you like to learn about?"
+    input_name = gets.chomp
+    @planets.each do |each_planet|
+      if each_planet.name.casecmp(input_name) == 0
+        return each_planet.summary
+      end
+    end
+    return "Invalid planet."
+  end
+end

From 1966f47070150a0cdfbab495fe428c65213094a8 Mon Sep 17 00:00:00 2001
From: laneia <laneiamurray@gmail.com>
Date: Tue, 26 Feb 2019 13:15:14 -0800
Subject: [PATCH 02/11] Added optional enhancements.

---
 main.rb         | 56 +++++++++++++------------------------------------
 solar_system.rb | 18 ++++++++++++++++
 2 files changed, 33 insertions(+), 41 deletions(-)

diff --git a/main.rb b/main.rb
index 5dc5ff30..68cb20d3 100644
--- a/main.rb
+++ b/main.rb
@@ -8,8 +8,16 @@ def add_new_planet
   color = gets.chomp
   puts "What about its mass in kilograms?"
   mass_kg = gets.chomp
+  until mass_kg.to_f > 0
+    puts "Must be a number greater than zero."
+    mass_kg = gets.chomp
+  end
   puts "Now I need its distance from the sun in kilometers."
   distance_from_sun_km = gets.chomp
+  until distance_from_sun_km.to_f > 0
+    puts "Must be a number greater than zero."
+    distance_from_sun_km = gets.chomp
+  end
   puts "And finally, what's a fun fact about this planet?"
   fun_fact = gets.chomp
 
@@ -48,7 +56,7 @@ def main
 
   while continue == true
     puts "What would you like to do next?"
-    puts "list planets | planet details | add planet | exit"
+    puts "list planets | planet details | add planet | distance between planets | exit"
     get_input = gets.chomp
     if get_input == "exit"
       puts "See ya!"
@@ -60,51 +68,17 @@ def main
     elsif get_input == "add planet"
       solar_system.add_planet(add_new_planet)
       puts "Planet added to the solar system!"
+    elsif get_input == "distance between planets"
+      puts "What's the first planet you're interested in?"
+      planet1_name = gets.chomp
+      puts "Sweet, what's the second planet?"
+      planet2_name = gets.chomp
+      puts solar_system.distance_between(planet1_name, planet2_name)
     else
       puts "Invalid prompt."
     end
   end
 end
 
-#   unless the_input == "exit"
-#     if the_input == "list planets"
-#       puts solar_system.list_planets
-#       get_input
-#     elsif the_input == "planet details"
-#       puts solar_system.find_planet_by_name
-#       get_input
-#     elsif the_input == "add planet"
-#       add_new_planet
-#       puts solar_system.add_planet(add_new_planet)
-#       get_input
-#     else
-#       puts "Invalid prompt."
-#     end
-#   else puts "See ya!"   end
-
-#   puts "The farthest planet from Sol is #{neptune.name} at #{neptune.distance_from_sun_km} kilometers!"
-
-#   puts "The biggest planet by far is #{jupiter.name} at #{jupiter.mass_kg} kilograms!"
-
-#   puts saturn.summary
-
-#   list = solar_system.list_planets
-#   puts list
-
-#   found_planet = solar_system.find_planet_by_name("earth")
-#   puts found_planet
-#   puts found_planet.summary
-
 puts "Welcome to the solar system!"
 main
-
-#   def get_input
-#     puts "What would you like to do next?"
-#     puts "list planets | planet details | add planet | exit"
-#     return gets.chomp
-#     # return user_input
-#   end
-
-#   puts "What would you like to do next?"
-#   puts "list planets | planet details | add planet | exit"
-#   the_input = gets.chomp
diff --git a/solar_system.rb b/solar_system.rb
index 01c21f0b..c2bd7a2d 100644
--- a/solar_system.rb
+++ b/solar_system.rb
@@ -30,4 +30,22 @@ def find_planet_by_name
     end
     return "Invalid planet."
   end
+
+  def find_planet_distance_by_name(a_planet)
+    @planets.each do |each_planet|
+      if each_planet.name.casecmp(a_planet) == 0
+        return each_planet.distance_from_sun_km
+      end
+    end
+    return "Invalid planet."
+  end
+
+  def distance_between(planet1_name, planet2_name)
+    planet1_position = find_planet_distance_by_name(planet1_name)
+    planet2_position = find_planet_distance_by_name(planet2_name)
+    if planet1_position.is_a?(Float) == false || planet2_position.is_a?(Float) == false
+      return "Invalid planet entered."
+    end
+    return "#{(planet2_position - planet1_position).abs} kilometers"
+  end
 end

From 11b781eba65fd5e7d25a883ab7cadb80dc5cae02 Mon Sep 17 00:00:00 2001
From: laneia <laneiamurray@gmail.com>
Date: Tue, 26 Feb 2019 13:44:25 -0800
Subject: [PATCH 03/11] Moved 3 files to lib, added spec for planet

---
 lib/main.rb         | 83 +++++++++++++++++++++++++++++++++++++++++++++
 lib/planet.rb       | 15 ++++++++
 lib/solar_system.rb | 51 ++++++++++++++++++++++++++++
 planet_spec.rb      | 15 ++++++++
 4 files changed, 164 insertions(+)
 create mode 100644 lib/main.rb
 create mode 100644 lib/planet.rb
 create mode 100644 lib/solar_system.rb
 create mode 100644 planet_spec.rb

diff --git a/lib/main.rb b/lib/main.rb
new file mode 100644
index 00000000..87b3d6da
--- /dev/null
+++ b/lib/main.rb
@@ -0,0 +1,83 @@
+require_relative "planet"
+require_relative "solar_system"
+
+def add_new_planet
+  puts "Okay, what's the name of the planet we're missing?"
+  name = gets.chomp
+  puts "Cool, what color is it?"
+  color = gets.chomp
+  puts "What about its mass in kilograms?"
+  mass_kg = gets.chomp
+  until mass_kg.to_f > 0
+    puts "Must be a number greater than zero."
+    mass_kg = gets.chomp
+  end
+  puts "Now I need its distance from the sun in kilometers."
+  distance_from_sun_km = gets.chomp
+  until distance_from_sun_km.to_f > 0
+    puts "Must be a number greater than zero."
+    distance_from_sun_km = gets.chomp
+  end
+  puts "And finally, what's a fun fact about this planet?"
+  fun_fact = gets.chomp
+
+  new_planet = Planet.new(name, color, mass_kg, distance_from_sun_km, fun_fact)
+end
+
+def main
+  solar_system = SolarSystem.new("Sol")
+
+  mercury = Planet.new("Mercury", "grey", 0.33e24, 57.9e6, "it has ice in craters that never receive sunlight.")
+  solar_system.add_planet(mercury)
+
+  venus = Planet.new("Venus", "yellow", 4.87e24, 108.2e6, "it probably had a moon, but collided with it after another impact reversed the planet's spin.")
+  solar_system.add_planet(venus)
+
+  earth = Planet.new("Earth", "blue", 5.97e24, 149.6e6, "it has more life than the rest of the known universe, as far as we know.")
+  solar_system.add_planet(earth)
+
+  mars = Planet.new("Mars", "red", 0.64e24, 227.9e6, "it has liquid water.")
+  solar_system.add_planet(mars)
+
+  jupiter = Planet.new("Jupiter", "orange", 1898e24, 778.3e6, "its gravity breaks apart many comets.")
+  solar_system.add_planet(jupiter)
+
+  saturn = Planet.new("Saturn", "gold", 569e24, 1427e6, "it's not known how or when its rings formed.")
+  solar_system.add_planet(saturn)
+
+  uranus = Planet.new("Uranus", "blue", 86.8e24, 2871e6, "it also has large storms in its atmosphere, like Jupiter.")
+  solar_system.add_planet(uranus)
+
+  neptune = Planet.new("Neptune", "blue", 102e24, 5913e6, "the wind can go as fast as 1,700 km/hr - faster than the speed of sound.")
+  solar_system.add_planet(neptune)
+
+  continue = true
+
+  while continue == true
+    puts "What would you like to do next?"
+    puts "list planets | planet details | add planet | distance between planets | exit"
+    get_input = gets.chomp
+    if get_input == "exit"
+      puts "See ya!"
+      return continue == false
+    elsif get_input == "list planets"
+      puts solar_system.list_planets
+    elsif get_input == "planet details"
+      puts solar_system.find_planet_by_name
+    elsif get_input == "add planet"
+      solar_system.add_planet(add_new_planet)
+      puts "Planet added to the solar system!"
+    elsif get_input == "distance between planets"
+      puts "What's the first planet you're interested in?"
+      planet1_name = gets.chomp
+      puts "Sweet, what's the second planet?"
+      planet2_name = gets.chomp
+      puts solar_system.distance_between(planet1_name, planet2_name)
+    else
+      puts "Invalid prompt."
+    end
+  end
+end
+
+puts "Welcome to the solar system!"
+main
diff --git a/lib/planet.rb b/lib/planet.rb
new file mode 100644
index 00000000..ee3d8899
--- /dev/null
+++ b/lib/planet.rb
@@ -0,0 +1,15 @@
+class Planet
+  attr_reader :name, :color, :mass_kg, :distance_from_sun_km, :fun_fact
+
+  def initialize(name, color, mass_kg, distance_from_sun_km, fun_fact)
+    @name = name
+    @color = color
+    @mass_kg = mass_kg
+    @distance_from_sun_km = distance_from_sun_km
+    @fun_fact = fun_fact
+  end
+
+  def summary
+    return "#{@name} is a #{@color} planet that weighs #{mass_kg} kilograms and orbits #{@distance_from_sun_km} kilometers from the sun.  A cool fact about #{@name} is that #{fun_fact}"
+  end
+end
diff --git a/lib/solar_system.rb b/lib/solar_system.rb
new file mode 100644
index 00000000..c2bd7a2d
--- /dev/null
+++ b/lib/solar_system.rb
@@ -0,0 +1,51 @@
+require_relative "planet"
+
+class SolarSystem
+  attr_reader :star_name, :planets
+
+  def initialize(star_name)
+    @star_name = star_name
+    @planets = []
+    @planet_print = ["Planets orbiting #{star_name}"]
+  end
+
+  def add_planet(planet)
+    @planets << planet
+  end
+
+  def list_planets
+    @planets.each_index do |index|
+      @planet_print << "#{index + 1}. #{@planets[index].name}"
+    end
+    return @planet_print
+  end
+
+  def find_planet_by_name
+    puts "Which planet would you like to learn about?"
+    input_name = gets.chomp
+    @planets.each do |each_planet|
+      if each_planet.name.casecmp(input_name) == 0
+        return each_planet.summary
+      end
+    end
+    return "Invalid planet."
+  end
+
+  def find_planet_distance_by_name(a_planet)
+    @planets.each do |each_planet|
+      if each_planet.name.casecmp(a_planet) == 0
+        return each_planet.distance_from_sun_km
+      end
+    end
+    return "Invalid planet."
+  end
+
+  def distance_between(planet1_name, planet2_name)
+    planet1_position = find_planet_distance_by_name(planet1_name)
+    planet2_position = find_planet_distance_by_name(planet2_name)
+    if planet1_position.is_a?(Float) == false || planet2_position.is_a?(Float) == false
+      return "Invalid planet entered."
+    end
+    return "#{(planet2_position - planet1_position).abs} kilometers"
+  end
+end
diff --git a/planet_spec.rb b/planet_spec.rb
new file mode 100644
index 00000000..9aaa9571
--- /dev/null
+++ b/planet_spec.rb
@@ -0,0 +1,15 @@
+gem "minitest", ">= 5.0.0"
+require "minitest"
+require "minitest/spec"
+require "minitest/autorun"
+require "minitest/reporters"
+require "minitest/pride"
+
+require_relative "lib/planet"
+
+describe "Planets tests" do
+  it "Test planet variable assignment and summary" do
+    mercury = Planet.new("Mercury", "grey", 0.33e24, 57.9e6, "it has ice in craters that never receive sunlight.")
+    expect(mercury.summary).must_equal "Mercury is a grey planet that weighs 3.3e+23 kilograms and orbits 57900000.0 kilometers from the sun.  A cool fact about Mercury is that it has ice in craters that never receive sunlight."
+  end
+end

From 1141af53957769c424313b5c416c9c7f793d38f9 Mon Sep 17 00:00:00 2001
From: laneia <laneiamurray@gmail.com>
Date: Tue, 26 Feb 2019 22:14:52 -0800
Subject: [PATCH 04/11] Continued spec work.  Tried to get distance method to
 work with new planet.

---
 lib/main.rb                | 52 ++++++++++++++++++++------------------
 lib/solar_system.rb        | 35 ++++++++++++++++++++++---
 specs/planet_spec.rb       | 25 ++++++++++++++++++
 specs/solar_system_spec.rb | 17 +++++++++++++
 4 files changed, 101 insertions(+), 28 deletions(-)
 create mode 100644 specs/planet_spec.rb
 create mode 100644 specs/solar_system_spec.rb

diff --git a/lib/main.rb b/lib/main.rb
index 87b3d6da..f48f4eb4 100644
--- a/lib/main.rb
+++ b/lib/main.rb
@@ -1,29 +1,6 @@
 require_relative "planet"
 require_relative "solar_system"
 
-def add_new_planet
-  puts "Okay, what's the name of the planet we're missing?"
-  name = gets.chomp
-  puts "Cool, what color is it?"
-  color = gets.chomp
-  puts "What about its mass in kilograms?"
-  mass_kg = gets.chomp
-  until mass_kg.to_f > 0
-    puts "Must be a number greater than zero."
-    mass_kg = gets.chomp
-  end
-  puts "Now I need its distance from the sun in kilometers."
-  distance_from_sun_km = gets.chomp
-  until distance_from_sun_km.to_f > 0
-    puts "Must be a number greater than zero."
-    distance_from_sun_km = gets.chomp
-  end
-  puts "And finally, what's a fun fact about this planet?"
-  fun_fact = gets.chomp
-
-  new_planet = Planet.new(name, color, mass_kg, distance_from_sun_km, fun_fact)
-end
-
 def main
   solar_system = SolarSystem.new("Sol")
 
@@ -63,7 +40,9 @@ def main
     elsif get_input == "list planets"
       puts solar_system.list_planets
     elsif get_input == "planet details"
-      puts solar_system.find_planet_by_name
+      puts "Which planet would you like to learn about?"
+      input_name = gets.chomp
+      puts solar_system.find_planet_by_name(input_name)
     elsif get_input == "add planet"
       solar_system.add_planet(add_new_planet)
       puts "Planet added to the solar system!"
@@ -81,3 +60,28 @@ def main
 
 puts "Welcome to the solar system!"
 main
+
+# Moved to solar_system.rb for now
+
+# def add_new_planet
+#   puts "Okay, what's the name of the planet we're missing?"
+#   name = gets.chomp
+#   puts "Cool, what color is it?"
+#   color = gets.chomp
+#   puts "What about its mass in kilograms?"
+#   mass_kg = gets.chomp
+#   until mass_kg.to_f > 0
+#     puts "Must be a number greater than zero."
+#     mass_kg = gets.chomp
+#   end
+#   puts "Now I need its distance from the sun in kilometers."
+#   distance_from_sun_km = gets.chomp
+#   until distance_from_sun_km.to_f > 0
+#     puts "Must be a number greater than zero."
+#     distance_from_sun_km = gets.chomp
+#   end
+#   puts "And finally, what's a fun fact about this planet?"
+#   fun_fact = gets.chomp
+
+#   return new_planet = Planet.new(name, color, mass_kg, distance_from_sun_km, fun_fact)
+# end
diff --git a/lib/solar_system.rb b/lib/solar_system.rb
index c2bd7a2d..b4f8366e 100644
--- a/lib/solar_system.rb
+++ b/lib/solar_system.rb
@@ -1,18 +1,46 @@
 require_relative "planet"
 
 class SolarSystem
-  attr_reader :star_name, :planets
+  attr_reader :star_name
+  attr_accessor :planets
 
   def initialize(star_name)
     @star_name = star_name
     @planets = []
     @planet_print = ["Planets orbiting #{star_name}"]
+    #@new_planet
   end
 
   def add_planet(planet)
     @planets << planet
   end
 
+  def add_new_planet
+    puts "Okay, what's the name of the planet we're missing?"
+    @name = gets.chomp
+    puts "Cool, what color is it?"
+    @color = gets.chomp
+    puts "What about its mass in kilograms?"
+    @mass_kg = gets.chomp
+    until @mass_kg.to_f > 0
+      puts "Must be a number greater than zero."
+      @mass_kg = gets.chomp
+    end
+    puts "Now I need its distance from the sun in kilometers."
+    @distance_from_sun_km = gets.chomp
+    until @distance_from_sun_km.to_f > 0
+      puts "Must be a number greater than zero."
+      @distance_from_sun_km = gets.chomp
+    end
+    puts "And finally, what's a fun fact about this planet?"
+    @fun_fact = gets.chomp
+
+    @new_planet = @name.capitalize
+    @new_planet = Planet.new(@name, @color, @mass_kg, @distance_from_sun_km, @fun_fact)
+    @planets << @new_planet
+    return @planets
+  end
+
   def list_planets
     @planets.each_index do |index|
       @planet_print << "#{index + 1}. #{@planets[index].name}"
@@ -20,9 +48,7 @@ def list_planets
     return @planet_print
   end
 
-  def find_planet_by_name
-    puts "Which planet would you like to learn about?"
-    input_name = gets.chomp
+  def find_planet_by_name(input_name)
     @planets.each do |each_planet|
       if each_planet.name.casecmp(input_name) == 0
         return each_planet.summary
@@ -31,6 +57,7 @@ def find_planet_by_name
     return "Invalid planet."
   end
 
+  # Why won't this method work on planets added via add_new_planet?
   def find_planet_distance_by_name(a_planet)
     @planets.each do |each_planet|
       if each_planet.name.casecmp(a_planet) == 0
diff --git a/specs/planet_spec.rb b/specs/planet_spec.rb
new file mode 100644
index 00000000..9626f1f0
--- /dev/null
+++ b/specs/planet_spec.rb
@@ -0,0 +1,25 @@
+gem "minitest", ">= 5.0.0"
+require "minitest"
+require "minitest/spec"
+require "minitest/autorun"
+require "minitest/reporters"
+require "minitest/pride"
+
+require_relative "../lib/planet"
+
+describe "Planets tests" do
+  it "Tests mass is greater than zero" do
+    mercury = Planet.new("Mercury", "grey", 0.33e24, 57.9e6, "it has ice in craters that never receive sunlight.")
+    expect(mercury.mass_kg).must_be :>, 0
+  end
+
+  it "Tests distance is greater than zero" do
+    mercury = Planet.new("Mercury", "grey", 0.33e24, 57.9e6, "it has ice in craters that never receive sunlight.")
+    expect(mercury.distance_from_sun_km).must_be :>, 0
+  end
+
+  it "Test planet variable assignment and summary" do
+    mercury = Planet.new("Mercury", "grey", 0.33e24, 57.9e6, "it has ice in craters that never receive sunlight.")
+    expect(mercury.summary).must_equal "Mercury is a grey planet that weighs 3.3e+23 kilograms and orbits 57900000.0 kilometers from the sun.  A cool fact about Mercury is that it has ice in craters that never receive sunlight."
+  end
+end
diff --git a/specs/solar_system_spec.rb b/specs/solar_system_spec.rb
new file mode 100644
index 00000000..3653be4f
--- /dev/null
+++ b/specs/solar_system_spec.rb
@@ -0,0 +1,17 @@
+gem "minitest", ">= 5.0.0"
+require "minitest"
+require "minitest/spec"
+require "minitest/autorun"
+require "minitest/reporters"
+require "minitest/pride"
+
+# require_relative "../lib/planet"
+require_relative "../lib/solar_system"
+
+describe "Solar system tests" do
+  it "Tests planet finding" do
+    solar_system = SolarSystem.new("Sol")
+    @planets = ["earth", "mars"]
+    expect(solar_system.find_planet_by_name("mars2")).must_match "Invalid planet."
+  end
+end

From 7710c9a9ff5eece8efa4364ba6c1effb701132fe Mon Sep 17 00:00:00 2001
From: laneia <laneiamurray@gmail.com>
Date: Tue, 26 Feb 2019 22:17:23 -0800
Subject: [PATCH 05/11] Fixed call method

---
 lib/main.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/main.rb b/lib/main.rb
index f48f4eb4..bb5796d2 100644
--- a/lib/main.rb
+++ b/lib/main.rb
@@ -44,7 +44,7 @@ def main
       input_name = gets.chomp
       puts solar_system.find_planet_by_name(input_name)
     elsif get_input == "add planet"
-      solar_system.add_planet(add_new_planet)
+      solar_system.add_new_planet
       puts "Planet added to the solar system!"
     elsif get_input == "distance between planets"
       puts "What's the first planet you're interested in?"

From ff9557d77f23c3caea729e8bba72e9a1e7f70c21 Mon Sep 17 00:00:00 2001
From: laneia <laneiamurray@gmail.com>
Date: Wed, 27 Feb 2019 08:38:45 -0800
Subject: [PATCH 06/11] minor adjustments

---
 lib/solar_system.rb | 47 ++++++++++++++++++++++-----------------------
 1 file changed, 23 insertions(+), 24 deletions(-)

diff --git a/lib/solar_system.rb b/lib/solar_system.rb
index b4f8366e..2270317c 100644
--- a/lib/solar_system.rb
+++ b/lib/solar_system.rb
@@ -1,8 +1,7 @@
 require_relative "planet"
 
 class SolarSystem
-  attr_reader :star_name
-  attr_accessor :planets
+  attr_reader :star_name, :planets
 
   def initialize(star_name)
     @star_name = star_name
@@ -16,29 +15,29 @@ def add_planet(planet)
   end
 
   def add_new_planet
-    puts "Okay, what's the name of the planet we're missing?"
-    @name = gets.chomp
-    puts "Cool, what color is it?"
-    @color = gets.chomp
-    puts "What about its mass in kilograms?"
-    @mass_kg = gets.chomp
-    until @mass_kg.to_f > 0
-      puts "Must be a number greater than zero."
-      @mass_kg = gets.chomp
+    print "Okay, what's the name of the planet we're missing?\n"
+    new_name = gets.chomp
+    print "Cool, what color is it?\n"
+    new_color = gets.chomp
+    print "What about its mass in kilograms?\n"
+    new_mass_kg = gets.chomp
+    until new_mass_kg.to_f > 0
+      print "Must be a number greater than zero.\n"
+      new_mass_kg = gets.chomp
     end
-    puts "Now I need its distance from the sun in kilometers."
-    @distance_from_sun_km = gets.chomp
-    until @distance_from_sun_km.to_f > 0
-      puts "Must be a number greater than zero."
-      @distance_from_sun_km = gets.chomp
+    print "Now I need its distance from the sun in kilometers.\n"
+    new_distance = gets.chomp
+    until new_distance.to_f > 0
+      print "Must be a number greater than zero.\n"
+      new_distance = gets.chomp
     end
-    puts "And finally, what's a fun fact about this planet?"
-    @fun_fact = gets.chomp
+    print "And finally, what's a fun fact about this planet?\n"
+    new_fun_fact = gets.chomp
 
-    @new_planet = @name.capitalize
-    @new_planet = Planet.new(@name, @color, @mass_kg, @distance_from_sun_km, @fun_fact)
-    @planets << @new_planet
-    return @planets
+    new_planet = Planet.new(new_name, new_color, new_mass_kg, new_distance, new_fun_fact)
+    add_planet(new_planet)
+
+    print @planets
   end
 
   def list_planets
@@ -58,9 +57,9 @@ def find_planet_by_name(input_name)
   end
 
   # Why won't this method work on planets added via add_new_planet?
-  def find_planet_distance_by_name(a_planet)
+  def find_planet_distance_by_name(planet)
     @planets.each do |each_planet|
-      if each_planet.name.casecmp(a_planet) == 0
+      if each_planet.name.casecmp(planet) == 0
         return each_planet.distance_from_sun_km
       end
     end

From 4e1a32fef15eace4618c7c8e77e8e37c9c19c694 Mon Sep 17 00:00:00 2001
From: laneia <laneiamurray@gmail.com>
Date: Wed, 27 Feb 2019 10:11:06 -0800
Subject: [PATCH 07/11] got distance between added planet and other planets
 working. GET IT.

---
 lib/solar_system.rb | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/lib/solar_system.rb b/lib/solar_system.rb
index 2270317c..fa7a9e80 100644
--- a/lib/solar_system.rb
+++ b/lib/solar_system.rb
@@ -20,24 +20,22 @@ def add_new_planet
     print "Cool, what color is it?\n"
     new_color = gets.chomp
     print "What about its mass in kilograms?\n"
-    new_mass_kg = gets.chomp
-    until new_mass_kg.to_f > 0
+    new_mass_kg = gets.chomp.to_f
+    until new_mass_kg > 0
       print "Must be a number greater than zero.\n"
-      new_mass_kg = gets.chomp
+      new_mass_kg = gets.chomp.to_f
     end
     print "Now I need its distance from the sun in kilometers.\n"
-    new_distance = gets.chomp
-    until new_distance.to_f > 0
+    new_distance = gets.chomp.to_f
+    until new_distance > 0
       print "Must be a number greater than zero.\n"
-      new_distance = gets.chomp
+      new_distance = gets.chomp.to_f
     end
     print "And finally, what's a fun fact about this planet?\n"
     new_fun_fact = gets.chomp
 
     new_planet = Planet.new(new_name, new_color, new_mass_kg, new_distance, new_fun_fact)
     add_planet(new_planet)
-
-    print @planets
   end
 
   def list_planets
@@ -56,7 +54,6 @@ def find_planet_by_name(input_name)
     return "Invalid planet."
   end
 
-  # Why won't this method work on planets added via add_new_planet?
   def find_planet_distance_by_name(planet)
     @planets.each do |each_planet|
       if each_planet.name.casecmp(planet) == 0

From c02ce3a7428cb2991a192537627a48341d42743f Mon Sep 17 00:00:00 2001
From: laneia <39808568+laneia@users.noreply.github.com>
Date: Wed, 27 Feb 2019 10:20:15 -0800
Subject: [PATCH 08/11] Delete planet.rb

---
 planet.rb | 15 ---------------
 1 file changed, 15 deletions(-)
 delete mode 100644 planet.rb

diff --git a/planet.rb b/planet.rb
deleted file mode 100644
index ee3d8899..00000000
--- a/planet.rb
+++ /dev/null
@@ -1,15 +0,0 @@
-class Planet
-  attr_reader :name, :color, :mass_kg, :distance_from_sun_km, :fun_fact
-
-  def initialize(name, color, mass_kg, distance_from_sun_km, fun_fact)
-    @name = name
-    @color = color
-    @mass_kg = mass_kg
-    @distance_from_sun_km = distance_from_sun_km
-    @fun_fact = fun_fact
-  end
-
-  def summary
-    return "#{@name} is a #{@color} planet that weighs #{mass_kg} kilograms and orbits #{@distance_from_sun_km} kilometers from the sun.  A cool fact about #{@name} is that #{fun_fact}"
-  end
-end

From db820c8b7bb0639b8d1c13318b91c0fe29d599dd Mon Sep 17 00:00:00 2001
From: laneia <39808568+laneia@users.noreply.github.com>
Date: Wed, 27 Feb 2019 10:20:39 -0800
Subject: [PATCH 09/11] Delete solar_system.rb

---
 solar_system.rb | 51 -------------------------------------------------
 1 file changed, 51 deletions(-)
 delete mode 100644 solar_system.rb

diff --git a/solar_system.rb b/solar_system.rb
deleted file mode 100644
index c2bd7a2d..00000000
--- a/solar_system.rb
+++ /dev/null
@@ -1,51 +0,0 @@
-require_relative "planet"
-
-class SolarSystem
-  attr_reader :star_name, :planets
-
-  def initialize(star_name)
-    @star_name = star_name
-    @planets = []
-    @planet_print = ["Planets orbiting #{star_name}"]
-  end
-
-  def add_planet(planet)
-    @planets << planet
-  end
-
-  def list_planets
-    @planets.each_index do |index|
-      @planet_print << "#{index + 1}. #{@planets[index].name}"
-    end
-    return @planet_print
-  end
-
-  def find_planet_by_name
-    puts "Which planet would you like to learn about?"
-    input_name = gets.chomp
-    @planets.each do |each_planet|
-      if each_planet.name.casecmp(input_name) == 0
-        return each_planet.summary
-      end
-    end
-    return "Invalid planet."
-  end
-
-  def find_planet_distance_by_name(a_planet)
-    @planets.each do |each_planet|
-      if each_planet.name.casecmp(a_planet) == 0
-        return each_planet.distance_from_sun_km
-      end
-    end
-    return "Invalid planet."
-  end
-
-  def distance_between(planet1_name, planet2_name)
-    planet1_position = find_planet_distance_by_name(planet1_name)
-    planet2_position = find_planet_distance_by_name(planet2_name)
-    if planet1_position.is_a?(Float) == false || planet2_position.is_a?(Float) == false
-      return "Invalid planet entered."
-    end
-    return "#{(planet2_position - planet1_position).abs} kilometers"
-  end
-end

From aff4cabb223df33724584438e0a83ea4c91085ea Mon Sep 17 00:00:00 2001
From: laneia <39808568+laneia@users.noreply.github.com>
Date: Wed, 27 Feb 2019 10:20:48 -0800
Subject: [PATCH 10/11] Delete planet_spec.rb

---
 planet_spec.rb | 15 ---------------
 1 file changed, 15 deletions(-)
 delete mode 100644 planet_spec.rb

diff --git a/planet_spec.rb b/planet_spec.rb
deleted file mode 100644
index 9aaa9571..00000000
--- a/planet_spec.rb
+++ /dev/null
@@ -1,15 +0,0 @@
-gem "minitest", ">= 5.0.0"
-require "minitest"
-require "minitest/spec"
-require "minitest/autorun"
-require "minitest/reporters"
-require "minitest/pride"
-
-require_relative "lib/planet"
-
-describe "Planets tests" do
-  it "Test planet variable assignment and summary" do
-    mercury = Planet.new("Mercury", "grey", 0.33e24, 57.9e6, "it has ice in craters that never receive sunlight.")
-    expect(mercury.summary).must_equal "Mercury is a grey planet that weighs 3.3e+23 kilograms and orbits 57900000.0 kilometers from the sun.  A cool fact about Mercury is that it has ice in craters that never receive sunlight."
-  end
-end

From 0a924c624e3a1dd7693dd3f4fffb24e67e4b294c Mon Sep 17 00:00:00 2001
From: laneia <39808568+laneia@users.noreply.github.com>
Date: Wed, 27 Feb 2019 10:20:57 -0800
Subject: [PATCH 11/11] Delete main.rb

---
 main.rb | 84 ---------------------------------------------------------
 1 file changed, 84 deletions(-)
 delete mode 100644 main.rb

diff --git a/main.rb b/main.rb
deleted file mode 100644
index 68cb20d3..00000000
--- a/main.rb
+++ /dev/null
@@ -1,84 +0,0 @@
-require_relative "planet"
-require_relative "solar_system"
-
-def add_new_planet
-  puts "Okay, what's the name of the planet we're missing?"
-  name = gets.chomp
-  puts "Cool, what color is it?"
-  color = gets.chomp
-  puts "What about its mass in kilograms?"
-  mass_kg = gets.chomp
-  until mass_kg.to_f > 0
-    puts "Must be a number greater than zero."
-    mass_kg = gets.chomp
-  end
-  puts "Now I need its distance from the sun in kilometers."
-  distance_from_sun_km = gets.chomp
-  until distance_from_sun_km.to_f > 0
-    puts "Must be a number greater than zero."
-    distance_from_sun_km = gets.chomp
-  end
-  puts "And finally, what's a fun fact about this planet?"
-  fun_fact = gets.chomp
-
-  new_planet = Planet.new(name, color, mass_kg, distance_from_sun_km, fun_fact)
-  #return new_planet
-end
-
-def main
-  solar_system = SolarSystem.new("Sol")
-
-  mercury = Planet.new("Mercury", "grey", 0.33e24, 57.9e6, "it has ice in craters that never receive sunlight.")
-  solar_system.add_planet(mercury)
-
-  venus = Planet.new("Venus", "yellow", 4.87e24, 108.2e6, "it probably had a moon, but collided with it after another impact reversed the planet's spin.")
-  solar_system.add_planet(venus)
-
-  earth = Planet.new("Earth", "blue", 5.97e24, 149.6e6, "it has more life than the rest of the known universe, as far as we know.")
-  solar_system.add_planet(earth)
-
-  mars = Planet.new("Mars", "red", 0.64e24, 227.9e6, "it has liquid water.")
-  solar_system.add_planet(mars)
-
-  jupiter = Planet.new("Jupiter", "orange", 1898e24, 778.3e6, "its gravity breaks apart many comets.")
-  solar_system.add_planet(jupiter)
-
-  saturn = Planet.new("Saturn", "gold", 569e24, 1427e6, "it's not known how or when its rings formed.")
-  solar_system.add_planet(saturn)
-
-  uranus = Planet.new("Uranus", "blue", 86.8e24, 2871e6, "it also has large storms in its atmosphere, like Jupiter.")
-  solar_system.add_planet(uranus)
-
-  neptune = Planet.new("Neptune", "blue", 102e24, 5913e6, "the wind can go as fast as 1,700 km/hr - faster than the speed of sound.")
-  solar_system.add_planet(neptune)
-
-  continue = true
-
-  while continue == true
-    puts "What would you like to do next?"
-    puts "list planets | planet details | add planet | distance between planets | exit"
-    get_input = gets.chomp
-    if get_input == "exit"
-      puts "See ya!"
-      return continue == false
-    elsif get_input == "list planets"
-      puts solar_system.list_planets
-    elsif get_input == "planet details"
-      puts solar_system.find_planet_by_name
-    elsif get_input == "add planet"
-      solar_system.add_planet(add_new_planet)
-      puts "Planet added to the solar system!"
-    elsif get_input == "distance between planets"
-      puts "What's the first planet you're interested in?"
-      planet1_name = gets.chomp
-      puts "Sweet, what's the second planet?"
-      planet2_name = gets.chomp
-      puts solar_system.distance_between(planet1_name, planet2_name)
-    else
-      puts "Invalid prompt."
-    end
-  end
-end
-
-puts "Welcome to the solar system!"
-main