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Feature: Basic Calculator Functions
In order to check I've written the Calculator class correctly
As a developer I want to check some basic operations
So that I can have confidence in my Calculator class.
Scenario: The default Display is 0
Given a new Calculator object
Then the display should show 0
Scenario: First Key Press on the Display
Given a new Calculator object
And having pressed 1
Then the display should show 1
Scenario: Several Key Presses on the Display
Given a new Calculator object
And having pressed 1 and 2 and 3 and . and 5 and 0
Then the display should show 123.50
Scenario: Pressing Clear Wipes the Display
Given a new Calculator object
And having pressed 1 and 2 and 3
And having pressed C
Then the display should show 0
Scenario: Type expression but don't execute it
Given a new Calculator object
And having pressed 1 and 2 and 3 and +
Then the display should show 123
Scenario: Type expression but don't execute it
Given a new Calculator object
And having pressed 1 and 2 and 3 and + and 4 and 5 and 6
Then the display should show 456
Scenario: Add as you go
Given a new Calculator object
And having pressed 1 and 2 and 3 and + and 4 and 5 and 6 and +
Then the display should show 579
Scenario: Really basic calculation
Given a new Calculator object
And having keyed 1+1=
Then the display should show 2
Scenario: After calculation pressin new key will replace result
Given a new Calculator object
And having keyed 1+1=
And having pressed 3
Then the display should show 3
Scenario: Basic arithmetic in one long input line
Given a new Calculator object
And having keyed <input>
And having pressed =
Then the display should show <result>
Examples:
| input | result |
| 5.0+5.0 | 10 |
| 6 / 3 | 2 |
| 1 0 * 7 . 5 5 0 | 75.5 |
| 3 - 10 | -7 |
Scenario: Basic arithmetic
Given a new Calculator object
And having keyed <first>
And having keyed <operator>
And having keyed <second>
And having pressed =
Then the display should show <result>
Examples:
| first | operator | second | result |
| 5.0 | + | 5.0 | 10 |
| 6 | / | 3 | 2 |
| 10 | * | 7.550 | 75.5 |
| 3 | - | 10 | -7 |
Scenario: Separation of calculations
Given a new Calculator object
And having successfully performed the following calculations
| first | operator | second | result |
| 0.5 | + | 0.1 | 0.6 |
| 0.01 | / | 0.01 | 1 |
| 10 | * | 1 | 10 |
And having pressed 3
Then the display should show 3
Scenario: Ticker Tape
Given a new Calculator object
And having entered the following sequence
"""
1 + 2 + 3 + 4 + 5 + 6 -
100
* 13 \=\=\= + 2 =
"""
Then the display should show -1025
Scenario: Enter number using text
Given a new Calculator object
And having keyed __THE_NUMBER_FIVE__
Then the display should show 5
Scenario: Enter numbers using text
Given a new Calculator object
And having added these numbers
| number as word |
| __THE_NUMBER_FOUR__ |
| __THE_NUMBER_FIVE__ |
| __THE_NUMBER_ONE__ |
Then the display should show 10
And the display should show __THE_NUMBER_TEN__
|
