LearnersLab

.idea/workspace.xml

@@ -2,13 +2,15 @@
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-      <change afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorTest.java" afterDir="false" />
-      <change afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/PeopleTest.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Instructors.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Students.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorsTest.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/StudentsTest.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Teacher.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Teacher.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/StudentTest.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/StudentTest.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Instructor.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Instructor.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Person.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Person.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorTest.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorTest.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/PeopleTest.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/PeopleTest.java" afterDir="false" />
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@@ -21,31 +23,31 @@
     <session id="1054639744">
       <usages-collector id="statistics.lifecycle.project">
         <counts>
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+          <entry key="project.closed" value="4" />
           <entry key="project.open.time.0" value="1" />
-          <entry key="project.open.time.1" value="2" />
+          <entry key="project.open.time.1" value="3" />
           <entry key="project.open.time.3" value="1" />
-          <entry key="project.opened" value="4" />
+          <entry key="project.opened" value="5" />
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+          <entry key="java" value="35" />
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       <usages-collector id="statistics.file.types.open">
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+          <entry key="JAVA" value="35" />
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@@ -59,106 +61,30 @@
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-        <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorTest.java">
+        <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Instructors.java">
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-      <file pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestPerson.java">
+      <file pinned="false" current-in-tab="true">
+        <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorsTest.java">
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@@ -184,14 +110,18 @@
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         <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Student.java" />
-        <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Person.java" />
         <option value="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestPerson.java" />
         <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Teacher.java" />
         <option value="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/StudentTest.java" />
         <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Instructor.java" />
         <option value="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorTest.java" />
-        <option value="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/PeopleTest.java" />
         <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/People.java" />
+        <option value="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/PeopleTest.java" />
+        <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Students.java" />
+        <option value="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/StudentsTest.java" />
+        <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Instructors.java" />
+        <option value="$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Person.java" />
+        <option value="$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorsTest.java" />
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     </option>
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@@ -212,6 +142,7 @@
       <foldersAlwaysOnTop value="true" />
     </navigator>
     <panes>
+      <pane id="Scope" />
       <pane id="ProjectPane">
         <subPane>
           <expand>
@@ -274,14 +205,13 @@
           <select />
         </subPane>
       </pane>
-      <pane id="Scope" />
       <pane id="PackagesPane" />
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   <component name="PropertiesComponent">
     <property name="WebServerToolWindowFactoryState" value="false" />
     <property name="aspect.path.notification.shown" value="true" />
-    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1541295616656" />
+    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1541393577725" />
     <property name="last_opened_file_path" value="$PROJECT_DIR$" />
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@@ -298,8 +228,8 @@
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-  <component name="RunManager" selected="JUnit.StudentTest.testLearn">
-    <configuration name="StudentTest.testImplementation" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+  <component name="RunManager" selected="JUnit.InstructorsTest.testInitializationSetupInstructors">
+    <configuration name="InstructorsTest" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
       <module name="interfaces-1" />
       <extension name="coverage">
         <pattern>
@@ -308,14 +238,12 @@
         </pattern>
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       <option name="PACKAGE_NAME" value="io.zipcoder.interfaces" />
-      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.StudentTest" />
-      <option name="METHOD_NAME" value="testImplementation" />
-      <option name="TEST_OBJECT" value="method" />
+      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.InstructorsTest" />
       <method v="2">
         <option name="Make" enabled="true" />
       </method>
     </configuration>
-    <configuration name="StudentTest.testInheritance" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+    <configuration name="InstructorsTest.testInitializationSetupInstructors" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
       <module name="interfaces-1" />
       <extension name="coverage">
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@@ -324,14 +252,14 @@
         </pattern>
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       <option name="PACKAGE_NAME" value="io.zipcoder.interfaces" />
-      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.StudentTest" />
-      <option name="METHOD_NAME" value="testInheritance" />
+      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.InstructorsTest" />
+      <option name="METHOD_NAME" value="testInitializationSetupInstructors" />
       <option name="TEST_OBJECT" value="method" />
       <method v="2">
         <option name="Make" enabled="true" />
       </method>
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-    <configuration name="StudentTest.testLearn" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+    <configuration name="PeopleTest.testAdd" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
       <module name="interfaces-1" />
       <extension name="coverage">
         <pattern>
@@ -340,14 +268,14 @@
         </pattern>
       </extension>
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-      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.StudentTest" />
-      <option name="METHOD_NAME" value="testLearn" />
+      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.PeopleTest" />
+      <option name="METHOD_NAME" value="testAdd" />
       <option name="TEST_OBJECT" value="method" />
       <method v="2">
         <option name="Make" enabled="true" />
       </method>
     </configuration>
-    <configuration name="TestPerson.testConstructor" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+    <configuration name="StudentsTest.testInitializationSetupStudents" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
       <module name="interfaces-1" />
       <extension name="coverage">
         <pattern>
@@ -356,14 +284,14 @@
         </pattern>
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       <option name="PACKAGE_NAME" value="io.zipcoder.interfaces" />
-      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.TestPerson" />
-      <option name="METHOD_NAME" value="testConstructor" />
+      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.StudentsTest" />
+      <option name="METHOD_NAME" value="testInitializationSetupStudents" />
       <option name="TEST_OBJECT" value="method" />
       <method v="2">
         <option name="Make" enabled="true" />
       </method>
     </configuration>
-    <configuration name="TestPerson.testSetAndGetName" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+    <configuration name="StudentsTest.testSingletonInstance" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
       <module name="interfaces-1" />
       <extension name="coverage">
         <pattern>
@@ -372,27 +300,27 @@
         </pattern>
       </extension>
       <option name="PACKAGE_NAME" value="io.zipcoder.interfaces" />
-      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.TestPerson" />
-      <option name="METHOD_NAME" value="testSetAndGetName" />
+      <option name="MAIN_CLASS_NAME" value="io.zipcoder.interfaces.StudentsTest" />
+      <option name="METHOD_NAME" value="testSingletonInstance" />
       <option name="TEST_OBJECT" value="method" />
       <method v="2">
         <option name="Make" enabled="true" />
       </method>
     </configuration>
     <list>
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-      <item itemvalue="JUnit.TestPerson.testSetAndGetName" />
-      <item itemvalue="JUnit.StudentTest.testImplementation" />
-      <item itemvalue="JUnit.StudentTest.testInheritance" />
-      <item itemvalue="JUnit.StudentTest.testLearn" />
+      <item itemvalue="JUnit.PeopleTest.testAdd" />
+      <item itemvalue="JUnit.StudentsTest.testInitializationSetupStudents" />
+      <item itemvalue="JUnit.StudentsTest.testSingletonInstance" />
+      <item itemvalue="JUnit.InstructorsTest" />
+      <item itemvalue="JUnit.InstructorsTest.testInitializationSetupInstructors" />
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-        <item itemvalue="JUnit.StudentTest.testImplementation" />
-        <item itemvalue="JUnit.TestPerson.testSetAndGetName" />
-        <item itemvalue="JUnit.TestPerson.testConstructor" />
+        <item itemvalue="JUnit.InstructorsTest.testInitializationSetupInstructors" />
+        <item itemvalue="JUnit.InstructorsTest" />
+        <item itemvalue="JUnit.StudentsTest.testInitializationSetupStudents" />
+        <item itemvalue="JUnit.StudentsTest.testSingletonInstance" />
+        <item itemvalue="JUnit.PeopleTest.testAdd" />
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@@ -409,41 +337,51 @@
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       <workItem from="1541196592239" duration="467000" />
       <workItem from="1541271635211" duration="2137000" />
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+      <workItem from="1541292748624" duration="2134000" />
+      <workItem from="1541344422166" duration="6586000" />
     </task>
     <servers />
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   <component name="TestHistory">
-    <history-entry file="TestPerson_testConstructor - 2018.11.03 at 18h 42m 41s.xml">
-      <configuration name="TestPerson.testConstructor" configurationId="JUnit" />
+    <history-entry file="StudentTest - 2018.11.04 at 22h 46m 38s.xml">
+      <configuration name="StudentTest" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="TestPerson - 2018.11.04 at 22h 46m 53s.xml">
+      <configuration name="TestPerson" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="PeopleTest_testAdd - 2018.11.04 at 22h 59m 25s.xml">
+      <configuration name="PeopleTest.testAdd" configurationId="JUnit" />
+    </history-entry>
+    <history-entry file="StudentsTest_testInitializationSetupStudents - 2018.11.04 at 23h 45m 34s.xml">
+      <configuration name="StudentsTest.testInitializationSetupStudents" configurationId="JUnit" />
     </history-entry>
-    <history-entry file="TestPerson_testConstructor - 2018.11.03 at 18h 43m 12s.xml">
-      <configuration name="TestPerson.testConstructor" configurationId="JUnit" />
+    <history-entry file="StudentsTest_testSingletonInstance - 2018.11.04 at 23h 45m 59s.xml">
+      <configuration name="StudentsTest.testSingletonInstance" configurationId="JUnit" />
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-    <history-entry file="TestPerson_testConstructor - 2018.11.03 at 18h 43m 51s.xml">
-      <configuration name="TestPerson.testConstructor" configurationId="JUnit" />
+    <history-entry file="StudentsTest_testInitializationSetupStudents - 2018.11.04 at 23h 46m 15s.xml">
+      <configuration name="StudentsTest.testInitializationSetupStudents" configurationId="JUnit" />
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-    <history-entry file="TestPerson_testSetAndGetName - 2018.11.03 at 18h 43m 58s.xml">
-      <configuration name="TestPerson.testSetAndGetName" configurationId="JUnit" />
+    <history-entry file="InstructorsTest - 2018.11.04 at 23h 49m 44s.xml">
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     </history-entry>
-    <history-entry file="StudentTest_testImplementation - 2018.11.03 at 18h 45m 38s.xml">
-      <configuration name="StudentTest.testImplementation" configurationId="JUnit" />
+    <history-entry file="InstructorsTest_testInitializationSetupInstructors - 2018.11.04 at 23h 50m 33s.xml">
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-    <history-entry file="StudentTest_testInheritance - 2018.11.03 at 18h 45m 44s.xml">
-      <configuration name="StudentTest.testInheritance" configurationId="JUnit" />
+    <history-entry file="InstructorsTest_testInitializationSetupInstructors - 2018.11.04 at 23h 52m 29s.xml">
+      <configuration name="InstructorsTest.testInitializationSetupInstructors" configurationId="JUnit" />
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-    <history-entry file="StudentTest_testLearn - 2018.11.03 at 18h 45m 49s.xml">
-      <configuration name="StudentTest.testLearn" configurationId="JUnit" />
+    <history-entry file="InstructorsTest_testInitializationSetupInstructors - 2018.11.04 at 23h 52m 44s.xml">
+      <configuration name="InstructorsTest.testInitializationSetupInstructors" configurationId="JUnit" />
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   </component>
   <component name="TimeTrackingManager">
-    <option name="totallyTimeSpent" value="5584000" />
+    <option name="totallyTimeSpent" value="12489000" />
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     <editor active="true" />
     <layout>
-      <window_info active="true" content_ui="combo" id="Project" order="0" visible="true" weight="0.26171243" />
+      <window_info content_ui="combo" id="Project" order="0" visible="true" weight="0.2657512" />
       <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
       <window_info id="Image Layers" order="2" />
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@@ -480,41 +418,41 @@
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   <component name="editorHistoryManager">
-    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestPerson.java">
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       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="300">
-          <caret line="21" column="37" selection-start-line="21" selection-start-column="37" selection-end-line="21" selection-end-column="37" />
-          <folding>
-            <element signature="imports" expanded="true" />
-          </folding>
+        <state relative-caret-position="75">
+          <caret line="7" column="18" selection-start-line="7" selection-start-column="18" selection-end-line="7" selection-end-column="18" />
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Learner.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="105">
-          <caret line="7" selection-start-line="7" selection-end-line="7" />
+        <state relative-caret-position="30">
+          <caret line="2" column="17" selection-start-line="2" selection-start-column="17" selection-end-line="2" selection-end-column="17" />
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Teacher.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state>
-          <caret column="31" lean-forward="true" selection-start-column="31" selection-end-column="31" />
+        <state relative-caret-position="30">
+          <caret line="2" column="17" selection-start-line="2" selection-start-column="17" selection-end-line="2" selection-end-column="17" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Person.java">
+    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/TestPerson.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="120">
-          <caret line="8" column="20" selection-start-line="8" selection-start-column="20" selection-end-line="8" selection-end-column="20" />
+        <state relative-caret-position="315">
+          <caret line="21" column="37" selection-start-line="21" selection-start-column="37" selection-end-line="21" selection-end-column="37" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/StudentTest.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="105">
-          <caret line="7" column="41" selection-start-line="7" selection-start-column="4" selection-end-line="7" selection-end-column="41" />
+        <state relative-caret-position="345">
+          <caret line="23" column="14" lean-forward="true" selection-start-line="23" selection-start-column="14" selection-end-line="23" selection-end-column="14" />
           <folding>
             <element signature="imports" expanded="true" />
           </folding>
@@ -523,49 +461,91 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/PeopleTest.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="45">
-          <caret line="3" selection-start-line="3" selection-end-line="3" />
+        <state relative-caret-position="90">
+          <caret line="6" column="13" selection-start-line="6" selection-start-column="13" selection-end-line="6" selection-end-column="13" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Student.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="30">
+          <caret line="2" column="13" selection-start-line="2" selection-start-column="13" selection-end-line="2" selection-end-column="13" />
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorTest.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="60">
-          <caret line="4" column="43" lean-forward="true" selection-start-line="4" selection-start-column="43" selection-end-line="4" selection-end-column="43" />
+        <state relative-caret-position="90">
+          <caret line="6" column="13" selection-start-line="6" selection-start-column="13" selection-end-line="6" selection-end-column="13" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Students.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="45">
+          <caret line="3" column="42" lean-forward="true" selection-start-line="3" selection-start-column="42" selection-end-line="3" selection-end-column="42" />
+          <folding>
+            <element signature="e#2558#2559#0" expanded="true" />
+            <element signature="e#2589#2590#0" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/People.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="442">
-          <caret line="60" selection-start-line="60" selection-end-line="60" />
+        <state relative-caret-position="450">
+          <caret line="32" column="31" lean-forward="true" selection-start-line="32" selection-start-column="31" selection-end-line="32" selection-end-column="31" />
           <folding>
-            <element signature="e#110#111#0" expanded="true" />
-            <element signature="e#162#163#0" expanded="true" />
             <element signature="e#232#233#0" expanded="true" />
-            <element signature="e#257#258#0" expanded="true" />
+            <element signature="e#270#271#0" expanded="true" />
             <element signature="e#308#309#0" expanded="true" />
-            <element signature="e#334#335#0" expanded="true" />
+            <element signature="e#346#347#0" expanded="true" />
             <element signature="e#1206#1207#0" expanded="true" />
             <element signature="e#1263#1264#0" expanded="true" />
           </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Student.java">
+    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/StudentsTest.java">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="315">
-          <caret line="21" selection-start-line="21" selection-end-line="21" />
+        <state relative-caret-position="375">
+          <caret line="25" lean-forward="true" selection-start-line="25" selection-end-line="25" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Instructor.java">
+    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Person.java">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="270">
-          <caret line="18" lean-forward="true" selection-start-line="18" selection-end-line="18" />
+          <caret line="24" lean-forward="true" selection-start-line="24" selection-end-line="24" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/io/zipcoder/interfaces/Instructors.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="195">
+          <caret line="13" column="45" selection-start-line="13" selection-start-column="45" selection-end-line="13" selection-end-column="45" />
           <folding>
-            <element signature="e#191#192#0" expanded="true" />
-            <element signature="e#235#236#0" expanded="true" />
+            <element signature="e#610#611#0" expanded="true" />
+            <element signature="e#641#642#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/io/zipcoder/interfaces/InstructorsTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="180">
+          <caret line="12" column="25" selection-start-line="12" selection-start-column="25" selection-end-line="12" selection-end-column="25" />
+          <folding>
+            <element signature="imports" expanded="true" />
           </folding>
         </state>
       </provider>

src/main/java/io/zipcoder/interfaces/Instructor.java

@@ -2,9 +2,10 @@ package io.zipcoder.interfaces;
 
 public class Instructor extends Person implements Teacher
 {
-    public Instructor()
-    {
 
+    public Instructor(int id,String name)
+    {
+        super(id);
     }
     public void teach(Learner learner, double numberOfHours) {
         learner.learn(numberOfHours);

src/main/java/io/zipcoder/interfaces/Instructors.java

@@ -0,0 +1,20 @@
+package io.zipcoder.interfaces;
+
+public final class Instructors {
+    private final static Instructors INSTANCE = new Instructors();
+    People instructorList;
+
+    private Instructors() {
+        instructorList = new People();
+        instructorList.add(new Instructor(100, "Kris Younger"));
+        instructorList.add(new Instructor(101, "Leon"));
+        instructorList.add(new Instructor(102, "Nhu Nguyen"));
+        instructorList.add(new Instructor(103, "Froilan Miranda"));
+        instructorList.add(new Instructor(104, "L. Dolio Durant"));
+        instructorList.add(new Instructor(105, "Wilhem Alcivar"));
+    }
+
+    public static Instructors getInstance() {
+        return INSTANCE;
+    }
+}

src/main/java/io/zipcoder/interfaces/Person.java

@@ -6,7 +6,7 @@ public class Person
     private String name;
 
     public Person(long id) {
-        this.id = 10;
+        this.id = id;
         this.name = "";
     }
 

src/main/java/io/zipcoder/interfaces/Students.java

@@ -0,0 +1,53 @@
+package io.zipcoder.interfaces;
+
+public final class Students {
+    private final static Students INSTANCE = new Students();
+    People studentList;
+
+    private Students() {
+        studentList = new People();
+        studentList.add(new Student(1, "Ned Redmond"));
+        studentList.add(new Student(2, "Seth Abrams"));
+        studentList.add(new Student(3, "Akeem Cherry"));
+        studentList.add(new Student(4, "Whitney Martinez"));
+        studentList.add(new Student(5, "Nira Parikh"));
+        studentList.add(new Student(6, "Connor Dunnigan"));
+        studentList.add(new Student(7, "Christian Sheridan"));
+        studentList.add(new Student(8, "Curtis Cook"));
+        studentList.add(new Student(9, "Nuridalia Hernandez"));
+        studentList.add(new Student(10, "Brandon DeFrancis"));
+        studentList.add(new Student(11, "De'Jon Johnson"));
+        studentList.add(new Student(12, "Demetrius Murray"));
+        studentList.add(new Student(13, "Elliott Stansbury"));
+        studentList.add(new Student(14, "Nathan Hall"));
+        studentList.add(new Student(15, "Jae Joson"));
+        studentList.add(new Student(16, "Jacob Anderson"));
+        studentList.add(new Student(17, "Jose Bedolla"));
+        studentList.add(new Student(18, "Jenn Chao"));
+        studentList.add(new Student(19, "Jennifer Tinkler"));
+        studentList.add(new Student(20, "Jonathan Hinds"));
+        studentList.add(new Student(21, "Jay Samuels"));
+        studentList.add(new Student(22, "Jevit Tith"));
+        studentList.add(new Student(23, "Lauren Green"));
+        studentList.add(new Student(24, "Kate Moore"));
+        studentList.add(new Student(25, "Michelle DiMarino"));
+        studentList.add(new Student(26, "Maggie Pierse"));
+        studentList.add(new Student(27, "Nick Satinover"));
+        studentList.add(new Student(28, "Chaitali Patel"));
+        studentList.add(new Student(29, "Yesoda Sanka"));
+        studentList.add(new Student(30, "Saurav Kamath"));
+        studentList.add(new Student(31, "Sam Bhutani"));
+        studentList.add(new Student(32, "Soujanya Buragapu"));
+        studentList.add(new Student(33, "Steffon Williams"));
+        studentList.add(new Student(34, "Zavon Malone"));
+        studentList.add(new Student(35, "Thuy Kong"));
+        studentList.add(new Student(36, "Thulasi Puppala"));
+        studentList.add(new Student(37, "Trinh Tong"));
+        studentList.add(new Student(38, "William Brown"));
+        studentList.add(new Student(39, "Xzavia Cuello"));
+    }
+
+    public static Students getInstance() {
+        return INSTANCE;
+    }
+}

src/test/java/io/zipcoder/interfaces/InstructorTest.java

@@ -1,6 +1,37 @@
 package io.zipcoder.interfaces;
 
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
 public class InstructorTest
 {
-    Instructor instructor = new Instructor();
+
+    Instructor instructor;
+
+    @Before
+    public void setup() {
+        instructor = new Instructor(32, "Soujanya Buragapu");
+    }
+
+    @Test
+    public void testImplementation(){
+        Assert.assertTrue(instructor instanceof Teacher);
+    }
+
+    @Test
+    public void testInheritance(){
+        Assert.assertTrue(instructor instanceof Person);
+    }
+
+    @Test
+    public void testTeach(){
+        Student student = new Student(32,"");
+        double before = student.getTotalStudyTime();
+        instructor.teach(student, 8);
+        double after = student.getTotalStudyTime();
+
+        Assert.assertTrue(after-before == 8);
+    }
+
 }

src/test/java/io/zipcoder/interfaces/InstructorsTest.java

@@ -0,0 +1,26 @@
+package io.zipcoder.interfaces;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class InstructorsTest {
+    @Test
+    public void testInitializationSetupInstructors() {
+        Instructors instructors = Instructors.getInstance();
+        Person[] InstructorsArray = instructors.instructorList.getArray();
+
+        int actual = InstructorsArray.length;
+        int expected = 20;
+
+        Assert.assertEquals(expected,actual);
+    }
+
+    @Test
+    public void testSingletonInstance() {
+        Instructors one = Instructors.getInstance();
+        Instructors two = Instructors.getInstance();
+
+        Assert.assertSame(one, two);
+    }
+
+}

src/test/java/io/zipcoder/interfaces/PeopleTest.java

@@ -1,5 +1,52 @@
 package io.zipcoder.interfaces;
 
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
 public class PeopleTest
 {
+    People people = new People();
+    @Test
+    public void testAdd() {
+        Person person = new Person(1);
+        people.personList.add(person);
+
+        Assert.assertNotNull(people.personList.get(0));
+    }
+    @Test
+    public void testRemoveByPerson()
+    {
+
+    }
+    @Test
+    public void testRemoveById()
+    {
+
+    }
+    @Test
+    public void testFindById()
+    {
+
+    }
+    @Test
+    public void testGetArray()
+    {
+
+    }
+    @Test
+    public void testRemoveAll()
+    {
+        Person one = new Person(1);
+        Person two = new Person(2);
+        Person three = new Person(3);
+
+        people.personList.add(one);
+        people.personList.add(two);
+        people.personList.add(three);
+
+        people.removeAll();
+
+
+    }
 }

src/test/java/io/zipcoder/interfaces/StudentsTest.java

@@ -0,0 +1,25 @@
+package io.zipcoder.interfaces;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class StudentsTest {
+    @Test
+    public void testInitializationSetupStudents() {
+        Students students = Students.getInstance();
+        Person[] studentArray = students.studentList.getArray();
+
+        int actual = studentArray.length;
+        int expected = 39;
+
+        Assert.assertEquals(expected,actual);
+    }
+
+    @Test
+    public void testSingletonInstance() {
+        Students one = Students.getInstance();
+        Students two = Students.getInstance();
+
+        Assert.assertSame(one, two);
+    }
+}