The difference between decision coverage and conditional coverage

Decision coverage only cares about the value of the judgment expression (true/false), while conditional coverage involves the value of each condition of the judgment expression (true/false).

Give the simplest example for easy understanding: (Recommended learning: PHP video tutorial)

Judgment expression: a>1 or b>1

Use judgment to cover the designed test data:

a＝5 (Judgment expression The value of the expression is "true")

a＝0 (The value of the expression is determined to be "false")

There is no need to control the value of b here, just The conditions for determining coverage have been met.

Cover the designed test data with conditions:

a＝5 (the value of condition a>1 is "true")

a＝0 (The value of condition a>1 is "false")

b＝5 (The value of condition b>1 is "true")

b＝0 (The value of condition b>1 is "false")

The value of the expression a>1 or b>1 is not considered here, but it must be The values ​​of the two conditions a>1 and b>1 are considered.

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