testcases_errors_and_edgecases.md

Edge Test Cases for the Calculate function

Test Case: Unary Minus

Given:

1 - 2 = ?
1kg - 2kg = ?

Expect:

1 - 2 = -1
1kg - 2kg = -1 kg

Test Case: Non Simple Unit Type

Given:

format(1/2, {notation: 'exponential'}) = ?
format(1/2, {notation: 'exponential'}) : ?

Expect:

format(1/2, {notation: 'exponential'}) = 5e-1
format(1/2, {notation: 'exponential'}) : 5e-1

Test Case: Non Simple Unit Type (edge case)

Given:

a = 1 km/h
a: ?
a^2 : ?
b = 1 km^2
b: ?
b^2: ?
c = 1 km s
c: ?
c^2: ?

Expect:

a = 1 km/h
a: 1 km / h
a^2 : 1.0000000000000002 km^2 / h^2
b = 1 km^2
b: 1 km^2
b^2: 1 km^4
c = 1 km s
c: 1 km s
c^2: 1 km^2 s^2

Test Case: Variable Overwrites

Given:

a = 5
a = 6
a + 2 =

Expect:

a = 5
a = 6
a + 2 = 8

Test Case: Multi Variable Assignment with Expression

Given:

a = b = 2 + 3 =

Expect:

a = b = 2 + 3 = 5

Test Case: Check that exponent results with unit is recognised as a result (Edge Case):

Given:

4.6 MB in B = ?

Expect:

4.6 MB in B = 4.6e+6 B

Test Case: Testing Edge Cases with Very Large Numbers

Given:

999999999999 + 1 =

Expect:

999999999999 + 1 = 1000000000000

Test Case: Handling Negative Numbers

Given:

-5 + 3 =

Expect:

-5 + 3 = -2

Test Case: Expressions with No Operations

Given:

a = 

Expect:

a = Error: Undefined symbol a

Test Case: Preserve Newlines above and below a doc

Given:

1 + 1 = 

Expect:

1 + 1 = 2

Test Case: Expression with Provided Result (Correct)

Given:

4 * 3 = 12

Expect:

4 * 3 = 12

Test Case: Expression with Provided Result (Incorrect)

Given:

4 * 3 = 11

Expect:

4 * 3 = 12

Test Case: Division by Zero

Given:

1 / 0 =

Expect:

1 / 0 = Error: Infinity. Possible Division by zero

Test Case: Undefined Variable

Given:

a + b =

Expect:

a + b = Error: Undefined symbol a

Test Case: Error Replacement

Given:

1 / 0 = Error: Something went wrong

Expect:

1 / 0 = Error: Infinity. Possible Division by zero

Test Case: Invalid Multi Variable Assignment

Given:

y = 2
x = 1 + y = 3 =

Expect:

y = 2
x = 1 + y = 3

Test Case: Cascading failure

Given:

a = 5
b = a + 1/0
c = b + 1
c + 1 = 8

Expect:

a = 5
b = a + 1/0 Error: Infinity. Possible Division by zero
c = b + 1 Error: Infinity. Possible Division by zero
c + 1 = 8 Error: Infinity. Possible Division by zero

Test Case: Multi Variable Assignment with Expression but no results

Given:

a = b = 2 + 3

Expect:

a = b = 2 + 3

Test Case: Matrix

Given:

matrix = [[1, 2], [3, 4]]
matrix + [1, 1; 1, 1] = 
det(matrix) = 
transpose(matrix) = 
matrix + [1, 1; 1, 1] = [[2, 3], [4, 5]]

Expect:

matrix = [[1, 2], [3, 4]]
matrix + [1, 1; 1, 1] = [[2, 3], [4, 5]]
det(matrix) = -2
transpose(matrix) = [[1, 3], [2, 4]]
matrix + [1, 1; 1, 1] = [[2, 3], [4, 5]]