Problem 44617. Make your own Test Suite (part 1)

Created by David Verrelli

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{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>In this task you need to imagine that you —</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:i/></w:rPr><w:t>yes, YOU</w:t></w:r><w:r><w:t> — have developed a problem on Cody for</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:i/></w:rPr><w:t>me</w:t></w:r><w:r><w:t> to solve, and now</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:b/></w:rPr><w:t>you need to prepare a simple Test Suite</w:t></w:r><w:r><w:t> to check whether</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:i/></w:rPr><w:t>my</w:t></w:r><w:r><w:t> submitted solutions meet</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:i/></w:rPr><w:t>your</w:t></w:r><w:r><w:t> requirements or not.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>So the tables are turned! You are now in the role of Tester! I am in the role of Player!</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>The problem you've set me is to:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr></w:pPr><w:r><w:t>output the</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:b/></w:rPr><w:t>sine</w:t></w:r><w:r><w:t> of an angle, when the angle is specified in degrees as a (scalar)</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"https://au.mathworks.com/help/matlab/ref/double.html\"><w:r><w:rPr><w:rFonts w:cs=\"monospace\"/></w:rPr><w:t>double</w:t></w:r></w:hyperlink><w:r><w:t>, with no restriction in the domain.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>You provide me with the following example for the function defined as</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:rFonts w:cs=\"monospace\"/></w:rPr><w:t>s = SINE(a)</w:t></w:r><w:r><w:t>:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[ % INPUT\n a = 45 % degrees\n % OUTPUT\n s = 1/sqrt(2)]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Now I have responded by submitting a large number of purported 'solutions', some of which are</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:i/></w:rPr><w:t>reasonably accurate</w:t></w:r><w:r><w:t>, and others which are either too imprecise or else logically flawed.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Your Test Suite (contained within</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:i/></w:rPr><w:t>your</w:t></w:r><w:r><w:t> function</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:rFonts w:cs=\"monospace\"/></w:rPr><w:t>testSuite</w:t></w:r><w:r><w:t>) must address each of the elements of your problem specification:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"2\"/></w:numPr></w:pPr><w:r><w:t>Check that my submitted code reliably returns</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:b/></w:rPr><w:t>sufficiently accurate</w:t></w:r><w:r><w:t> values for sine of many different angles. Use the</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"https://au.mathworks.com/help/matlab/ref/assert.html\"><w:r><w:rPr><w:rFonts w:cs=\"monospace\"/></w:rPr><w:t>assert</w:t></w:r></w:hyperlink><w:r><w:t> function to generate</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"https://www.mathworks.com/matlabcentral/cody/problems/44357\"><w:r><w:t>errors/exceptions</w:t></w:r></w:hyperlink><w:r><w:t> if the values are not sufficiently accurate.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"2\"/></w:numPr></w:pPr><w:r><w:t>You</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:b/></w:rPr><w:t>cannot</w:t></w:r><w:r><w:t> use (or mention) the functions</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:rFonts w:cs=\"monospace\"/></w:rPr><w:t>sind</w:t></w:r><w:r><w:t>,</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:rFonts w:cs=\"monospace\"/></w:rPr><w:t>sin</w:t></w:r><w:r><w:t>,</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:rFonts w:cs=\"monospace\"/></w:rPr><w:t>cscd</w:t></w:r><w:r><w:t> or</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:rFonts w:cs=\"monospace\"/></w:rPr><w:t>cosd</w:t></w:r><w:r><w:t> in your Test Suite; any other functions are allowed. [</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:i/></w:rPr><w:t>MOTIVATION: You shouldn't be exposing an efficient way of solving the problem within your Test Suite, otherwise I can just copy and paste your solution and submit it as my own!</w:t></w:r><w:r><w:t> ]</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>When creating a Test Suite for a Cody problem it is a good habit to try to anticipate the tactics that diverse Players might employ! Therefore the above specification is merely a</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:i/></w:rPr><w:t>starting point</w:t></w:r><w:r><w:t>. You will develop more robust Test Suites in:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr></w:pPr><w:hyperlink w:docLocation=\"https://www.mathworks.com/matlabcentral/cody/problems/44616\"><w:r><w:t>Problem 44616</w:t></w:r></w:hyperlink><w:r><w:t> (part</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:b/></w:rPr><w:t>2</w:t></w:r><w:r><w:t>)</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"ListParagraph\"/><w:numPr><w:numId w:val=\"1\"/></w:numPr></w:pPr><w:hyperlink w:docLocation=\"https://www.mathworks.com/matlabcentral/cody/problems/44521\"><w:r><w:t>Problem 44521</w:t></w:r></w:hyperlink><w:r><w:t> (part</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:b/></w:rPr><w:t>3</w:t></w:r><w:r><w:t>)</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Alternatively, if even this Problem seems daunting, you may want to start with</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"https://www.mathworks.com/matlabcentral/cody/problems/44631\"><w:r><w:t>Problem 44631</w:t></w:r></w:hyperlink><w:r><w:t> (part</w:t></w:r><w:r><w:t> </w:t></w:r><w:r><w:rPr><w:b/></w:rPr><w:t>0</w:t></w:r><w:r><w:t>).</w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

In this task you need to imagine that you — yes, YOU — have developed a problem on Cody for me to solve, and now you need to prepare a simple Test Suite to check whether my submitted solutions meet your requirements or not.So the tables are turned! You are now in the role of Tester! I am in the role of Player!The problem you've set me is to:<ul><li>output the sine of an angle, when the angle is specified in degrees as a (scalar) <a href = "https://au.mathworks.com/help/matlab/ref/double.html"><tt>double</tt></a>, with no restriction in the domain.</li></ul>You provide me with the following example for the function defined as <tt>s = SINE(a)</tt>:<pre> % INPUT
 a = 45 % degrees
 % OUTPUT
 s = 1/sqrt(2)</pre>Now I have responded by submitting a large number of purported 'solutions', some of which are reasonably accurate, and others which are either too imprecise or else logically flawed.Your Test Suite (contained within your function <tt>testSuite</tt>) must address each of the elements of your problem specification:<ol><li>Check that my submitted code reliably returns sufficiently accurate values for sine of many different angles. Use the <a href = "https://au.mathworks.com/help/matlab/ref/assert.html"><tt>assert</tt></a> function to generate <a href = "https://www.mathworks.com/matlabcentral/cody/problems/44357">errors/exceptions</a> if the values are not sufficiently accurate.</li><li>You cannot use (or mention) the functions <tt>sind</tt>, <tt>sin</tt>, <tt>cscd</tt> or <tt>cosd</tt> in your Test Suite; any other functions are allowed. [ MOTIVATION: You shouldn't be exposing an efficient way of solving the problem within your Test Suite, otherwise I can just copy and paste your solution and submit it as my own! ]</li></ol>When creating a Test Suite for a Cody problem it is a good habit to try to anticipate the tactics that diverse Players might employ! Therefore the above specification is merely a starting point. You will develop more robust Test Suites in:<ul><li><a href = "https://www.mathworks.com/matlabcentral/cody/problems/44616">Problem 44616</a> (part 2)</li><li><a href = "https://www.mathworks.com/matlabcentral/cody/problems/44521">Problem 44521</a> (part 3)</li></ul>Alternatively, if even this Problem seems daunting, you may want to start with <a href = "https://www.mathworks.com/matlabcentral/cody/problems/44631">Problem 44631</a> (part 0).

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