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Add ChunkGenerator

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This generator collects values from the underlying generator until it
has a specified amount of them, and then returns them in one "chunk".
In case the underlying generator does not have enough elements for
a specific chunk, the left-over elements are discarded.

Closes #1538
This commit is contained in:
Martin Hořeňovský
2019-02-23 20:22:46 +01:00
parent 288387fa10
commit 693647c43f
11 changed files with 526 additions and 178 deletions
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113
projects/SelfTest/Baselines/console.sw.approved.txt
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@@ -3080,6 +3080,117 @@ Generators.tests.cpp:<line number>: PASSED:
with expansion:
3 > 0
-------------------------------------------------------------------------------
Generators -- adapters
Chunking a generator into sized pieces
Number of elements in source is divisible by chunk size
-------------------------------------------------------------------------------
Generators.tests.cpp:<line number>
...............................................................................
Generators.tests.cpp:<line number>: PASSED:
REQUIRE( chunk2.size() == 2 )
with expansion:
2 == 2
Generators.tests.cpp:<line number>: PASSED:
REQUIRE( chunk2.front() == chunk2.back() )
with expansion:
1 == 1
-------------------------------------------------------------------------------
Generators -- adapters
Chunking a generator into sized pieces
Number of elements in source is divisible by chunk size
-------------------------------------------------------------------------------
Generators.tests.cpp:<line number>
...............................................................................
Generators.tests.cpp:<line number>: PASSED:
REQUIRE( chunk2.size() == 2 )
with expansion:
2 == 2
Generators.tests.cpp:<line number>: PASSED:
REQUIRE( chunk2.front() == chunk2.back() )
with expansion:
2 == 2
-------------------------------------------------------------------------------
Generators -- adapters
Chunking a generator into sized pieces
Number of elements in source is divisible by chunk size
-------------------------------------------------------------------------------
Generators.tests.cpp:<line number>
...............................................................................
Generators.tests.cpp:<line number>: PASSED:
REQUIRE( chunk2.size() == 2 )
with expansion:
2 == 2
Generators.tests.cpp:<line number>: PASSED:
REQUIRE( chunk2.front() == chunk2.back() )
with expansion:
3 == 3
-------------------------------------------------------------------------------
Generators -- adapters
Chunking a generator into sized pieces
Number of elements in source is not divisible by chunk size
-------------------------------------------------------------------------------
Generators.tests.cpp:<line number>
...............................................................................
Generators.tests.cpp:<line number>: PASSED:
REQUIRE( chunk2.size() == 2 )
with expansion:
2 == 2
Generators.tests.cpp:<line number>: PASSED:
REQUIRE( chunk2.front() == chunk2.back() )
with expansion:
1 == 1
Generators.tests.cpp:<line number>: PASSED:
REQUIRE( chunk2.front() < 3 )
with expansion:
1 < 3
-------------------------------------------------------------------------------
Generators -- adapters
Chunking a generator into sized pieces
Number of elements in source is not divisible by chunk size
-------------------------------------------------------------------------------
Generators.tests.cpp:<line number>
...............................................................................
Generators.tests.cpp:<line number>: PASSED:
REQUIRE( chunk2.size() == 2 )
with expansion:
2 == 2
Generators.tests.cpp:<line number>: PASSED:
REQUIRE( chunk2.front() == chunk2.back() )
with expansion:
2 == 2
Generators.tests.cpp:<line number>: PASSED:
REQUIRE( chunk2.front() < 3 )
with expansion:
2 < 3
-------------------------------------------------------------------------------
Generators -- adapters
Chunking a generator into sized pieces
Throws on too small generators
-------------------------------------------------------------------------------
Generators.tests.cpp:<line number>
...............................................................................
Generators.tests.cpp:<line number>: PASSED:
REQUIRE_THROWS_AS( chunk(2, value(1)), Catch::GeneratorException )
-------------------------------------------------------------------------------
Generators -- simple
one
@@ -10574,5 +10685,5 @@ Misc.tests.cpp:<line number>: PASSED:
===============================================================================
test cases: 245 | 172 passed | 69 failed | 4 failed as expected
assertions: 1379 | 1229 passed | 129 failed | 21 failed as expected
assertions: 1392 | 1242 passed | 129 failed | 21 failed as expected