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coverage. Add basic tests for MC/DC

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zhuyunxing 2024-04-19 10:58:42 +08:00 committed by Deltalice
parent 439dbfa1ec
commit 402dc38d99
3 changed files with 583 additions and 0 deletions
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218
tests/coverage/mcdc_if.cov-map Normal file
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@ -0,0 +1,218 @@
Function name: mcdc_if::mcdc_check_a
Raw bytes (64): 0x[01, 01, 04, 01, 05, 09, 02, 0d, 0f, 09, 02, 08, 01, 0f, 01, 01, 09, 28, 00, 02, 01, 08, 00, 0e, 30, 05, 02, 01, 02, 00, 00, 08, 00, 09, 05, 00, 0d, 00, 0e, 30, 0d, 09, 02, 00, 00, 00, 0d, 00, 0e, 0d, 00, 0f, 02, 06, 0f, 02, 0c, 02, 06, 0b, 03, 01, 00, 02]
Number of files: 1
- file 0 => global file 1
Number of expressions: 4
- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
- expression 1 operands: lhs = Counter(2), rhs = Expression(0, Sub)
- expression 2 operands: lhs = Counter(3), rhs = Expression(3, Add)
- expression 3 operands: lhs = Counter(2), rhs = Expression(0, Sub)
Number of file 0 mappings: 8
- Code(Counter(0)) at (prev + 15, 1) to (start + 1, 9)
- MCDCDecision { bitmap_idx: 0, conditions_num: 2 } at (prev + 1, 8) to (start + 0, 14)
- MCDCBranch { true: Counter(1), false: Expression(0, Sub), condition_id: 1, true_next_id: 2, false_next_id: 0 } at (prev + 0, 8) to (start + 0, 9)
true = c1
false = (c0 - c1)
- Code(Counter(1)) at (prev + 0, 13) to (start + 0, 14)
- MCDCBranch { true: Counter(3), false: Counter(2), condition_id: 2, true_next_id: 0, false_next_id: 0 } at (prev + 0, 13) to (start + 0, 14)
true = c3
false = c2
- Code(Counter(3)) at (prev + 0, 15) to (start + 2, 6)
- Code(Expression(3, Add)) at (prev + 2, 12) to (start + 2, 6)
= (c2 + (c0 - c1))
- Code(Expression(2, Add)) at (prev + 3, 1) to (start + 0, 2)
= (c3 + (c2 + (c0 - c1)))
Function name: mcdc_if::mcdc_check_b
Raw bytes (64): 0x[01, 01, 04, 01, 05, 09, 02, 0d, 0f, 09, 02, 08, 01, 17, 01, 01, 09, 28, 00, 02, 01, 08, 00, 0e, 30, 05, 02, 01, 02, 00, 00, 08, 00, 09, 05, 00, 0d, 00, 0e, 30, 0d, 09, 02, 00, 00, 00, 0d, 00, 0e, 0d, 00, 0f, 02, 06, 0f, 02, 0c, 02, 06, 0b, 03, 01, 00, 02]
Number of files: 1
- file 0 => global file 1
Number of expressions: 4
- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
- expression 1 operands: lhs = Counter(2), rhs = Expression(0, Sub)
- expression 2 operands: lhs = Counter(3), rhs = Expression(3, Add)
- expression 3 operands: lhs = Counter(2), rhs = Expression(0, Sub)
Number of file 0 mappings: 8
- Code(Counter(0)) at (prev + 23, 1) to (start + 1, 9)
- MCDCDecision { bitmap_idx: 0, conditions_num: 2 } at (prev + 1, 8) to (start + 0, 14)
- MCDCBranch { true: Counter(1), false: Expression(0, Sub), condition_id: 1, true_next_id: 2, false_next_id: 0 } at (prev + 0, 8) to (start + 0, 9)
true = c1
false = (c0 - c1)
- Code(Counter(1)) at (prev + 0, 13) to (start + 0, 14)
- MCDCBranch { true: Counter(3), false: Counter(2), condition_id: 2, true_next_id: 0, false_next_id: 0 } at (prev + 0, 13) to (start + 0, 14)
true = c3
false = c2
- Code(Counter(3)) at (prev + 0, 15) to (start + 2, 6)
- Code(Expression(3, Add)) at (prev + 2, 12) to (start + 2, 6)
= (c2 + (c0 - c1))
- Code(Expression(2, Add)) at (prev + 3, 1) to (start + 0, 2)
= (c3 + (c2 + (c0 - c1)))
Function name: mcdc_if::mcdc_check_both
Raw bytes (64): 0x[01, 01, 04, 01, 05, 09, 02, 0d, 0f, 09, 02, 08, 01, 1f, 01, 01, 09, 28, 00, 02, 01, 08, 00, 0e, 30, 05, 02, 01, 02, 00, 00, 08, 00, 09, 05, 00, 0d, 00, 0e, 30, 0d, 09, 02, 00, 00, 00, 0d, 00, 0e, 0d, 00, 0f, 02, 06, 0f, 02, 0c, 02, 06, 0b, 03, 01, 00, 02]
Number of files: 1
- file 0 => global file 1
Number of expressions: 4
- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
- expression 1 operands: lhs = Counter(2), rhs = Expression(0, Sub)
- expression 2 operands: lhs = Counter(3), rhs = Expression(3, Add)
- expression 3 operands: lhs = Counter(2), rhs = Expression(0, Sub)
Number of file 0 mappings: 8
- Code(Counter(0)) at (prev + 31, 1) to (start + 1, 9)
- MCDCDecision { bitmap_idx: 0, conditions_num: 2 } at (prev + 1, 8) to (start + 0, 14)
- MCDCBranch { true: Counter(1), false: Expression(0, Sub), condition_id: 1, true_next_id: 2, false_next_id: 0 } at (prev + 0, 8) to (start + 0, 9)
true = c1
false = (c0 - c1)
- Code(Counter(1)) at (prev + 0, 13) to (start + 0, 14)
- MCDCBranch { true: Counter(3), false: Counter(2), condition_id: 2, true_next_id: 0, false_next_id: 0 } at (prev + 0, 13) to (start + 0, 14)
true = c3
false = c2
- Code(Counter(3)) at (prev + 0, 15) to (start + 2, 6)
- Code(Expression(3, Add)) at (prev + 2, 12) to (start + 2, 6)
= (c2 + (c0 - c1))
- Code(Expression(2, Add)) at (prev + 3, 1) to (start + 0, 2)
= (c3 + (c2 + (c0 - c1)))
Function name: mcdc_if::mcdc_check_neither
Raw bytes (64): 0x[01, 01, 04, 01, 05, 09, 02, 0d, 0f, 09, 02, 08, 01, 07, 01, 01, 09, 28, 00, 02, 01, 08, 00, 0e, 30, 05, 02, 01, 02, 00, 00, 08, 00, 09, 05, 00, 0d, 00, 0e, 30, 0d, 09, 02, 00, 00, 00, 0d, 00, 0e, 0d, 00, 0f, 02, 06, 0f, 02, 0c, 02, 06, 0b, 03, 01, 00, 02]
Number of files: 1
- file 0 => global file 1
Number of expressions: 4
- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
- expression 1 operands: lhs = Counter(2), rhs = Expression(0, Sub)
- expression 2 operands: lhs = Counter(3), rhs = Expression(3, Add)
- expression 3 operands: lhs = Counter(2), rhs = Expression(0, Sub)
Number of file 0 mappings: 8
- Code(Counter(0)) at (prev + 7, 1) to (start + 1, 9)
- MCDCDecision { bitmap_idx: 0, conditions_num: 2 } at (prev + 1, 8) to (start + 0, 14)
- MCDCBranch { true: Counter(1), false: Expression(0, Sub), condition_id: 1, true_next_id: 2, false_next_id: 0 } at (prev + 0, 8) to (start + 0, 9)
true = c1
false = (c0 - c1)
- Code(Counter(1)) at (prev + 0, 13) to (start + 0, 14)
- MCDCBranch { true: Counter(3), false: Counter(2), condition_id: 2, true_next_id: 0, false_next_id: 0 } at (prev + 0, 13) to (start + 0, 14)
true = c3
false = c2
- Code(Counter(3)) at (prev + 0, 15) to (start + 2, 6)
- Code(Expression(3, Add)) at (prev + 2, 12) to (start + 2, 6)
= (c2 + (c0 - c1))
- Code(Expression(2, Add)) at (prev + 3, 1) to (start + 0, 2)
= (c3 + (c2 + (c0 - c1)))
Function name: mcdc_if::mcdc_check_not_tree_decision
Raw bytes (87): 0x[01, 01, 08, 01, 05, 02, 09, 05, 09, 0d, 1e, 02, 09, 11, 1b, 0d, 1e, 02, 09, 0a, 01, 31, 01, 03, 0a, 28, 00, 03, 03, 08, 00, 15, 30, 05, 02, 01, 02, 03, 00, 09, 00, 0a, 02, 00, 0e, 00, 0f, 30, 09, 1e, 03, 02, 00, 00, 0e, 00, 0f, 0b, 00, 14, 00, 15, 30, 11, 0d, 02, 00, 00, 00, 14, 00, 15, 11, 00, 16, 02, 06, 1b, 02, 0c, 02, 06, 17, 03, 01, 00, 02]
Number of files: 1
- file 0 => global file 1
Number of expressions: 8
- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
- expression 1 operands: lhs = Expression(0, Sub), rhs = Counter(2)
- expression 2 operands: lhs = Counter(1), rhs = Counter(2)
- expression 3 operands: lhs = Counter(3), rhs = Expression(7, Sub)
- expression 4 operands: lhs = Expression(0, Sub), rhs = Counter(2)
- expression 5 operands: lhs = Counter(4), rhs = Expression(6, Add)
- expression 6 operands: lhs = Counter(3), rhs = Expression(7, Sub)
- expression 7 operands: lhs = Expression(0, Sub), rhs = Counter(2)
Number of file 0 mappings: 10
- Code(Counter(0)) at (prev + 49, 1) to (start + 3, 10)
- MCDCDecision { bitmap_idx: 0, conditions_num: 3 } at (prev + 3, 8) to (start + 0, 21)
- MCDCBranch { true: Counter(1), false: Expression(0, Sub), condition_id: 1, true_next_id: 2, false_next_id: 3 } at (prev + 0, 9) to (start + 0, 10)
true = c1
false = (c0 - c1)
- Code(Expression(0, Sub)) at (prev + 0, 14) to (start + 0, 15)
= (c0 - c1)
- MCDCBranch { true: Counter(2), false: Expression(7, Sub), condition_id: 3, true_next_id: 2, false_next_id: 0 } at (prev + 0, 14) to (start + 0, 15)
true = c2
false = ((c0 - c1) - c2)
- Code(Expression(2, Add)) at (prev + 0, 20) to (start + 0, 21)
= (c1 + c2)
- MCDCBranch { true: Counter(4), false: Counter(3), condition_id: 2, true_next_id: 0, false_next_id: 0 } at (prev + 0, 20) to (start + 0, 21)
true = c4
false = c3
- Code(Counter(4)) at (prev + 0, 22) to (start + 2, 6)
- Code(Expression(6, Add)) at (prev + 2, 12) to (start + 2, 6)
= (c3 + ((c0 - c1) - c2))
- Code(Expression(5, Add)) at (prev + 3, 1) to (start + 0, 2)
= (c4 + (c3 + ((c0 - c1) - c2)))
Function name: mcdc_if::mcdc_check_tree_decision
Raw bytes (87): 0x[01, 01, 08, 01, 05, 05, 0d, 05, 0d, 0d, 11, 09, 02, 1b, 1f, 0d, 11, 09, 02, 0a, 01, 27, 01, 03, 09, 28, 00, 03, 03, 08, 00, 15, 30, 05, 02, 01, 02, 00, 00, 08, 00, 09, 05, 00, 0e, 00, 0f, 30, 0d, 0a, 02, 00, 03, 00, 0e, 00, 0f, 0a, 00, 13, 00, 14, 30, 11, 09, 03, 00, 00, 00, 13, 00, 14, 1b, 00, 16, 02, 06, 1f, 02, 0c, 02, 06, 17, 03, 01, 00, 02]
Number of files: 1
- file 0 => global file 1
Number of expressions: 8
- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
- expression 1 operands: lhs = Counter(1), rhs = Counter(3)
- expression 2 operands: lhs = Counter(1), rhs = Counter(3)
- expression 3 operands: lhs = Counter(3), rhs = Counter(4)
- expression 4 operands: lhs = Counter(2), rhs = Expression(0, Sub)
- expression 5 operands: lhs = Expression(6, Add), rhs = Expression(7, Add)
- expression 6 operands: lhs = Counter(3), rhs = Counter(4)
- expression 7 operands: lhs = Counter(2), rhs = Expression(0, Sub)
Number of file 0 mappings: 10
- Code(Counter(0)) at (prev + 39, 1) to (start + 3, 9)
- MCDCDecision { bitmap_idx: 0, conditions_num: 3 } at (prev + 3, 8) to (start + 0, 21)
- MCDCBranch { true: Counter(1), false: Expression(0, Sub), condition_id: 1, true_next_id: 2, false_next_id: 0 } at (prev + 0, 8) to (start + 0, 9)
true = c1
false = (c0 - c1)
- Code(Counter(1)) at (prev + 0, 14) to (start + 0, 15)
- MCDCBranch { true: Counter(3), false: Expression(2, Sub), condition_id: 2, true_next_id: 0, false_next_id: 3 } at (prev + 0, 14) to (start + 0, 15)
true = c3
false = (c1 - c3)
- Code(Expression(2, Sub)) at (prev + 0, 19) to (start + 0, 20)
= (c1 - c3)
- MCDCBranch { true: Counter(4), false: Counter(2), condition_id: 3, true_next_id: 0, false_next_id: 0 } at (prev + 0, 19) to (start + 0, 20)
true = c4
false = c2
- Code(Expression(6, Add)) at (prev + 0, 22) to (start + 2, 6)
= (c3 + c4)
- Code(Expression(7, Add)) at (prev + 2, 12) to (start + 2, 6)
= (c2 + (c0 - c1))
- Code(Expression(5, Add)) at (prev + 3, 1) to (start + 0, 2)
= ((c3 + c4) + (c2 + (c0 - c1)))
Function name: mcdc_if::mcdc_nested_if
Raw bytes (124): 0x[01, 01, 0d, 01, 05, 02, 09, 05, 09, 1b, 15, 05, 09, 1b, 15, 05, 09, 11, 15, 02, 09, 2b, 32, 0d, 2f, 11, 15, 02, 09, 0e, 01, 3b, 01, 01, 09, 28, 00, 02, 01, 08, 00, 0e, 30, 05, 02, 01, 00, 02, 00, 08, 00, 09, 02, 00, 0d, 00, 0e, 30, 09, 32, 02, 00, 00, 00, 0d, 00, 0e, 1b, 01, 09, 01, 0d, 28, 01, 02, 01, 0c, 00, 12, 30, 16, 15, 01, 02, 00, 00, 0c, 00, 0d, 16, 00, 11, 00, 12, 30, 0d, 11, 02, 00, 00, 00, 11, 00, 12, 0d, 00, 13, 02, 0a, 2f, 02, 0a, 00, 0b, 32, 01, 0c, 02, 06, 27, 03, 01, 00, 02]
Number of files: 1
- file 0 => global file 1
Number of expressions: 13
- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
- expression 1 operands: lhs = Expression(0, Sub), rhs = Counter(2)
- expression 2 operands: lhs = Counter(1), rhs = Counter(2)
- expression 3 operands: lhs = Expression(6, Add), rhs = Counter(5)
- expression 4 operands: lhs = Counter(1), rhs = Counter(2)
- expression 5 operands: lhs = Expression(6, Add), rhs = Counter(5)
- expression 6 operands: lhs = Counter(1), rhs = Counter(2)
- expression 7 operands: lhs = Counter(4), rhs = Counter(5)
- expression 8 operands: lhs = Expression(0, Sub), rhs = Counter(2)
- expression 9 operands: lhs = Expression(10, Add), rhs = Expression(12, Sub)
- expression 10 operands: lhs = Counter(3), rhs = Expression(11, Add)
- expression 11 operands: lhs = Counter(4), rhs = Counter(5)
- expression 12 operands: lhs = Expression(0, Sub), rhs = Counter(2)
Number of file 0 mappings: 14
- Code(Counter(0)) at (prev + 59, 1) to (start + 1, 9)
- MCDCDecision { bitmap_idx: 0, conditions_num: 2 } at (prev + 1, 8) to (start + 0, 14)
- MCDCBranch { true: Counter(1), false: Expression(0, Sub), condition_id: 1, true_next_id: 0, false_next_id: 2 } at (prev + 0, 8) to (start + 0, 9)
true = c1
false = (c0 - c1)
- Code(Expression(0, Sub)) at (prev + 0, 13) to (start + 0, 14)
= (c0 - c1)
- MCDCBranch { true: Counter(2), false: Expression(12, Sub), condition_id: 2, true_next_id: 0, false_next_id: 0 } at (prev + 0, 13) to (start + 0, 14)
true = c2
false = ((c0 - c1) - c2)
- Code(Expression(6, Add)) at (prev + 1, 9) to (start + 1, 13)
= (c1 + c2)
- MCDCDecision { bitmap_idx: 1, conditions_num: 2 } at (prev + 1, 12) to (start + 0, 18)
- MCDCBranch { true: Expression(5, Sub), false: Counter(5), condition_id: 1, true_next_id: 2, false_next_id: 0 } at (prev + 0, 12) to (start + 0, 13)
true = ((c1 + c2) - c5)
false = c5
- Code(Expression(5, Sub)) at (prev + 0, 17) to (start + 0, 18)
= ((c1 + c2) - c5)
- MCDCBranch { true: Counter(3), false: Counter(4), condition_id: 2, true_next_id: 0, false_next_id: 0 } at (prev + 0, 17) to (start + 0, 18)
true = c3
false = c4
- Code(Counter(3)) at (prev + 0, 19) to (start + 2, 10)
- Code(Expression(11, Add)) at (prev + 2, 10) to (start + 0, 11)
= (c4 + c5)
- Code(Expression(12, Sub)) at (prev + 1, 12) to (start + 2, 6)
= ((c0 - c1) - c2)
- Code(Expression(9, Add)) at (prev + 3, 1) to (start + 0, 2)
= ((c3 + (c4 + c5)) + ((c0 - c1) - c2))

262
tests/coverage/mcdc_if.coverage Normal file
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LL| |#![feature(coverage_attribute)]
LL| |//@ edition: 2021
LL| |//@ min-llvm-version: 18
LL| |//@ compile-flags: -Zcoverage-options=mcdc
LL| |//@ llvm-cov-flags: --show-mcdc
LL| |
LL| 2|fn mcdc_check_neither(a: bool, b: bool) {
LL| 2| if a && b {
^0
------------------
|---> MC/DC Decision Region (LL:8) to (LL:14)
|
| Number of Conditions: 2
| Condition C1 --> (LL:8)
| Condition C2 --> (LL:13)
|
| Executed MC/DC Test Vectors:
|
| C1, C2 Result
| 1 { F, - = F }
|
| C1-Pair: not covered
| C2-Pair: not covered
| MC/DC Coverage for Decision: 0.00%
|
------------------
LL| 0| say("a and b");
LL| 2| } else {
LL| 2| say("not both");
LL| 2| }
LL| 2|}
LL| |
LL| 2|fn mcdc_check_a(a: bool, b: bool) {
LL| 2| if a && b {
^1
------------------
|---> MC/DC Decision Region (LL:8) to (LL:14)
|
| Number of Conditions: 2
| Condition C1 --> (LL:8)
| Condition C2 --> (LL:13)
|
| Executed MC/DC Test Vectors:
|
| C1, C2 Result
| 1 { F, - = F }
| 2 { T, T = T }
|
| C1-Pair: covered: (1,2)
| C2-Pair: not covered
| MC/DC Coverage for Decision: 50.00%
|
------------------
LL| 1| say("a and b");
LL| 1| } else {
LL| 1| say("not both");
LL| 1| }
LL| 2|}
LL| |
LL| 2|fn mcdc_check_b(a: bool, b: bool) {
LL| 2| if a && b {
------------------
|---> MC/DC Decision Region (LL:8) to (LL:14)
|
| Number of Conditions: 2
| Condition C1 --> (LL:8)
| Condition C2 --> (LL:13)
|
| Executed MC/DC Test Vectors:
|
| C1, C2 Result
| 1 { T, F = F }
| 2 { T, T = T }
|
| C1-Pair: not covered
| C2-Pair: covered: (1,2)
| MC/DC Coverage for Decision: 50.00%
|
------------------
LL| 1| say("a and b");
LL| 1| } else {
LL| 1| say("not both");
LL| 1| }
LL| 2|}
LL| |
LL| 3|fn mcdc_check_both(a: bool, b: bool) {
LL| 3| if a && b {
^2
------------------
|---> MC/DC Decision Region (LL:8) to (LL:14)
|
| Number of Conditions: 2
| Condition C1 --> (LL:8)
| Condition C2 --> (LL:13)
|
| Executed MC/DC Test Vectors:
|
| C1, C2 Result
| 1 { F, - = F }
| 2 { T, F = F }
| 3 { T, T = T }
|
| C1-Pair: covered: (1,3)
| C2-Pair: covered: (2,3)
| MC/DC Coverage for Decision: 100.00%
|
------------------
LL| 1| say("a and b");
LL| 2| } else {
LL| 2| say("not both");
LL| 2| }
LL| 3|}
LL| |
LL| 4|fn mcdc_check_tree_decision(a: bool, b: bool, c: bool) {
LL| 4| // This expression is intentionally written in a way
LL| 4| // where 100% branch coverage indicates 100% mcdc coverage.
LL| 4| if a && (b || c) {
^3 ^2
------------------
|---> MC/DC Decision Region (LL:8) to (LL:21)
|
| Number of Conditions: 3
| Condition C1 --> (LL:8)
| Condition C2 --> (LL:14)
| Condition C3 --> (LL:19)
|
| Executed MC/DC Test Vectors:
|
| C1, C2, C3 Result
| 1 { F, -, - = F }
| 2 { T, F, F = F }
| 3 { T, T, - = T }
| 4 { T, F, T = T }
|
| C1-Pair: covered: (1,3)
| C2-Pair: covered: (2,3)
| C3-Pair: covered: (2,4)
| MC/DC Coverage for Decision: 100.00%
|
------------------
LL| 2| say("pass");
LL| 2| } else {
LL| 2| say("reject");
LL| 2| }
LL| 4|}
LL| |
LL| 4|fn mcdc_check_not_tree_decision(a: bool, b: bool, c: bool) {
LL| 4| // Contradict to `mcdc_check_tree_decision`,
LL| 4| // 100% branch coverage of this expression does not mean indicates 100% mcdc coverage.
LL| 4| if (a || b) && c {
^1
------------------
|---> MC/DC Decision Region (LL:8) to (LL:21)
|
| Number of Conditions: 3
| Condition C1 --> (LL:9)
| Condition C2 --> (LL:14)
| Condition C3 --> (LL:20)
|
| Executed MC/DC Test Vectors:
|
| C1, C2, C3 Result
| 1 { T, -, F = F }
| 2 { T, -, T = T }
| 3 { F, T, T = T }
|
| C1-Pair: not covered
| C2-Pair: not covered
| C3-Pair: covered: (1,2)
| MC/DC Coverage for Decision: 33.33%
|
------------------
LL| 2| say("pass");
LL| 2| } else {
LL| 2| say("reject");
LL| 2| }
LL| 4|}
LL| |
LL| 3|fn mcdc_nested_if(a: bool, b: bool, c: bool) {
LL| 3| if a || b {
^0
------------------
|---> MC/DC Decision Region (LL:8) to (LL:14)
|
| Number of Conditions: 2
| Condition C1 --> (LL:8)
| Condition C2 --> (LL:13)
|
| Executed MC/DC Test Vectors:
|
| C1, C2 Result
| 1 { T, - = T }
|
| C1-Pair: not covered
| C2-Pair: not covered
| MC/DC Coverage for Decision: 0.00%
|
------------------
LL| 3| say("a or b");
LL| 3| if b && c {
^2
------------------
|---> MC/DC Decision Region (LL:12) to (LL:18)
|
| Number of Conditions: 2
| Condition C1 --> (LL:12)
| Condition C2 --> (LL:17)
|
| Executed MC/DC Test Vectors:
|
| C1, C2 Result
| 1 { F, - = F }
| 2 { T, F = F }
| 3 { T, T = T }
|
| C1-Pair: covered: (1,3)
| C2-Pair: covered: (2,3)
| MC/DC Coverage for Decision: 100.00%
|
------------------
LL| 1| say("b and c");
LL| 2| }
LL| 0| } else {
LL| 0| say("neither a nor b");
LL| 0| }
LL| 3|}
LL| |
LL| |#[coverage(off)]
LL| |fn main() {
LL| | mcdc_check_neither(false, false);
LL| | mcdc_check_neither(false, true);
LL| |
LL| | mcdc_check_a(true, true);
LL| | mcdc_check_a(false, true);
LL| |
LL| | mcdc_check_b(true, true);
LL| | mcdc_check_b(true, false);
LL| |
LL| | mcdc_check_both(false, true);
LL| | mcdc_check_both(true, true);
LL| | mcdc_check_both(true, false);
LL| |
LL| | mcdc_check_tree_decision(false, true, true);
LL| | mcdc_check_tree_decision(true, true, false);
LL| | mcdc_check_tree_decision(true, false, false);
LL| | mcdc_check_tree_decision(true, false, true);
LL| |
LL| | mcdc_check_not_tree_decision(false, true, true);
LL| | mcdc_check_not_tree_decision(true, true, false);
LL| | mcdc_check_not_tree_decision(true, false, false);
LL| | mcdc_check_not_tree_decision(true, false, true);
LL| |
LL| | mcdc_nested_if(true, false, true);
LL| | mcdc_nested_if(true, true, true);
LL| | mcdc_nested_if(true, true, false);
LL| |}
LL| |
LL| |#[coverage(off)]
LL| |fn say(message: &str) {
LL| | core::hint::black_box(message);
LL| |}

103
tests/coverage/mcdc_if.rs Normal file
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#![feature(coverage_attribute)]
//@ edition: 2021
//@ min-llvm-version: 18
//@ compile-flags: -Zcoverage-options=mcdc
//@ llvm-cov-flags: --show-mcdc
fn mcdc_check_neither(a: bool, b: bool) {
if a && b {
say("a and b");
} else {
say("not both");
}
}
fn mcdc_check_a(a: bool, b: bool) {
if a && b {
say("a and b");
} else {
say("not both");
}
}
fn mcdc_check_b(a: bool, b: bool) {
if a && b {
say("a and b");
} else {
say("not both");
}
}
fn mcdc_check_both(a: bool, b: bool) {
if a && b {
say("a and b");
} else {
say("not both");
}
}
fn mcdc_check_tree_decision(a: bool, b: bool, c: bool) {
// This expression is intentionally written in a way
// where 100% branch coverage indicates 100% mcdc coverage.
if a && (b || c) {
say("pass");
} else {
say("reject");
}
}
fn mcdc_check_not_tree_decision(a: bool, b: bool, c: bool) {
// Contradict to `mcdc_check_tree_decision`,
// 100% branch coverage of this expression does not mean indicates 100% mcdc coverage.
if (a || b) && c {
say("pass");
} else {
say("reject");
}
}
fn mcdc_nested_if(a: bool, b: bool, c: bool) {
if a || b {
say("a or b");
if b && c {
say("b and c");
}
} else {
say("neither a nor b");
}
}
#[coverage(off)]
fn main() {
mcdc_check_neither(false, false);
mcdc_check_neither(false, true);
mcdc_check_a(true, true);
mcdc_check_a(false, true);
mcdc_check_b(true, true);
mcdc_check_b(true, false);
mcdc_check_both(false, true);
mcdc_check_both(true, true);
mcdc_check_both(true, false);
mcdc_check_tree_decision(false, true, true);
mcdc_check_tree_decision(true, true, false);
mcdc_check_tree_decision(true, false, false);
mcdc_check_tree_decision(true, false, true);
mcdc_check_not_tree_decision(false, true, true);
mcdc_check_not_tree_decision(true, true, false);
mcdc_check_not_tree_decision(true, false, false);
mcdc_check_not_tree_decision(true, false, true);
mcdc_nested_if(true, false, true);
mcdc_nested_if(true, true, true);
mcdc_nested_if(true, true, false);
}
#[coverage(off)]
fn say(message: &str) {
core::hint::black_box(message);
}