Events directory restructuring

[gpsimenos]

Summary of changes

mbed-os/events directory restructured according to the internal proposal.

• Public headers moved into mbed-os/events/include/events folder
• Unity tests moved into mbed-os/events/tests/UNITTESTS folder
• Greentea tests moved into mbed-os/events/tests/TESTS folder
• 'Local' profiling tests moved into mbed-os/events/tests/unit folder
• Duplicate 'local' unit tests removed
• Include paths updated where necessary

This is one of a series of PRs aiming to clean up the mbed-os directory structure. The intention is to create a consistent tree among mbed components, following the below structure:

[component name]
├── mbed_lib.json                     // Each component comes with their own config that's appended to the App/System ├── config 
├── CMakeList.txt                     // This depends on the build system choices, part of another PREQ
├── README.md
├── include                           // The top-level include path
│   └── [component name]              // Public headers that can be accessed by the developers - `#include [component name]/*.h`
│       └── internal                  // Internal headers that implement or are included by a public header or are needed by other Mbed OS libraries - `#include [component name]/internal/*.h`
├── source                            // Source files and private headers, available only inside the component's source directory
└── tests
    ├── <framework>                   // <framework> test folder (for example CPPUTEST)
    │   └── <test suite one>          // Can be either source file or a directory
    ├── UNITTESTS                     // Unit tests (previously in UNITTESTS) folder using googletest framework (to be renamed to gtest at a later stage)
    │   └── <unit test suite one>     // Can be either source file or a directory
    └── TESTS                         // Greentea tests (previously in TESTS) folder (to be renamed to greentea at a later stage)
        └── <greentea test suite one> // Can be either source file or a directory
 
mbed-os
└── TESTS (to be renamed to greentea at a later stage)
    ├── integration   
    └── system

Impact of changes

'Local' unit tests (previously in events/source/tests) are duplicates of newer greentea tests and thus have been removed. The profiling tests (previously also in events/source/tests) have been moved to mbed-os/events/tests/unit. To run them, cd into the new location and run make prof.

Migration actions required

None

---

Documentation

None

---

Pull request type

[X] Patch update (Bug fix / Target update / Docs update / Test update / Refactor)
[] Feature update (New feature / Functionality change / New API)
[] Major update (Breaking change E.g. Return code change / API behaviour change)

---

Test results

[] No Tests required for this change (E.g docs only update)
[X] Covered by existing mbed-os tests (Greentea or Unittest)
[] Tests / results supplied as part of this PR

(equeue main.cpp modified to remove MBED_EXTENDED_TESTS check)
mbed test -m K64F -t GCC_ARM --greentea -n events-tests-tests-events-timing,events-tests-tests-events-equeue,events-tests-tests-events-queue

Build successes:
  * K64F::GCC_ARM::EVENTS-TESTS-TESTS-EVENTS-EQUEUE
  * K64F::GCC_ARM::EVENTS-TESTS-TESTS-EVENTS-QUEUE
  * K64F::GCC_ARM::EVENTS-TESTS-TESTS-EVENTS-TIMING
  * K64F::GCC_ARM::MBED-BUILD

===================================================================

(equeue main.cpp modified to remove MBED_EXTENDED_TESTS check)
mbed test -m K64F -t GCC_ARM --greentea -n events-tests-tests-events-timing,events-tests-tests-events-equeue,events-tests-tests-events-queue --app-config TESTS/configs/baremetal.json

Build successes:
  * K64F::GCC_ARM::EVENTS-TESTS-TESTS-EVENTS-EQUEUE
  * K64F::GCC_ARM::EVENTS-TESTS-TESTS-EVENTS-QUEUE
  * K64F::GCC_ARM::EVENTS-TESTS-TESTS-EVENTS-TIMING
  * K64F::GCC_ARM::MBED-BUILD

===================================================================

mbed test --unittests --compile

. . .
[ 11%] Built target events-equeue.MbedOS
. . .
[ 62%] Built target events-equeue
. . .

Unit tests built successfully.

---

Reviewers

@evedon
@ashok-rao
@LDong-Arm

---

[mergify]

This PR cannot be merged due to conflicts. Please rebase to resolve them.

[gpsimenos]

Rebased.

Pull request has been modified.

[0xc0170]

Travis events job is still failing, please review

[ciarmcom]

@gpsimenos, thank you for your changes.
@evedon @ashok-rao @LDong-Arm @ARMmbed/mbed-os-wan @ARMmbed/mbed-os-core @ARMmbed/mbed-os-ipcore @ARMmbed/mbed-os-maintainers please review.

[mergify]

This PR cannot be merged due to conflicts. Please rebase to resolve them.

[gpsimenos]

Rebased.

[evedon]

Profiling tests should be restored (so we might all well restore the two test files)

Pull request has been modified.

[gpsimenos]

Rebased and restored profiling tests. Didn't restore unit tests as those have been ported to greentea.

[0xc0170]

I'll start CI once netsocket is in (fixing CI)

[evedon]

@gpsimenos PR approved but you still need to update "Impact of changes"

[mergify]

This PR cannot be merged due to conflicts. Please rebase to resolve them.

[gpsimenos]

Rebased again.

Pull request has been modified.

[gpsimenos]

All comments have been addressed. Let's run CI.

[0xc0170]

CI started

[mbed-ci]

Test run: SUCCESS

Summary: 7 of 7 test jobs passed
Build number : 1
Build artifacts