# Tests/Activity/Calculate/AlgebraAndConstantTest

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Stream Category ,|x|Build stream::x}} Test category::Activity Test subcategory::Calculate System component::Calculate System feature::http://wiki.laptop.org/go/Calculate Test objective::Test three functions for the algebra feature, also test the constants of the Calculate activity Test tools::n/a Test setup::n/a [[Test procedure::1. Open the XO machine 2. Run the Calculate Activity on XO machine 3. Test invalid inputs for algebra operation 4. Test valid inputs for algebra operation. Constants are checked and used as valid inputs.]] [[Pass criteria::When using invalid inputs like letters, it is expected that the tests to fail by informing the user with an error message. When using valid inputs, it is expected that the tests will pass by returning the correct values.]] [[More notes::The following is the test suite for algebra and constant test: ```inputs(invalid, int, double, constants), sign(+,-), algebra(x!,x^2,root(x)) ``` Base on Pairwise, we count and build 9 test cases, and 1 test case by Myer's. We check the constants(pi, e) and use it by putting them as input values. We just test three of algebra operations, which are x!, x^2, root(x).More tests are needed to cover the other functions of the algebra feature.]]
Release Stream Build Pass/Fail Trac Ticket(s) Comment(s) Date of Test
Software release::Candidate Build stream::8.2 Build number::1 PassFail::Pass ,|x| #x}} [[Comments::TestInvalidInputs:

We can not input letters(a-Z) to do algebra operation.]]

Created::2009/03/26

Software release::Candidate Build stream::8.2 Build number::9 PassFail::Pass ,|x| #x}} [[Comments::TestValidInputs:

When the input number is negative, root(x) of algebra operation produce error as expected. When a double input is used for x!, the result is zero.]]

Created::2009/03/26