oeqa/sdk: Simplify test specification and discovery

Simplify how tests are specified and discovered for different SDK configurations
to allow per-layer customization.

* Introduce `TESTSDK_CASE_DIRS` variable to specify test directory types,
  replacing the need to modify the default_cases class member

* Discover tests from configured layers using a common discovery pattern
  (`<LAYER_DIR>/lib/oeqa/<dirname>/cases`) where `<dirname>` is specified in `TESTSDK_CASE_DIRS`

* The buildtools directories were renamed to follow the common discovery pattern
(`<LAYER_DIR>/lib/oeqa/<dirname>/cases`) for consistency across all SDK configurations.

  meta/lib/oeqa/
  ├── sdk/cases/              # Standard SDK: dirname="sdk"
  ├── buildtools/cases/       # Buildtools: dirname="buildtools"
  └── buildtools-docs/cases/  # Buildtools-docs: dirname="buildtools-docs"

  meta-mingw/lib/oeqa/
  └── sdkmingw/cases/         # MinGW: dirname="sdkmingw"

  meta-foo/lib/oeqa/
  └── sdk/cases/              # Standard SDK: dirname="sdk"

Tested by:

1. Adding new tests using the default discovery pattern `<LAYER_DIR>/lib/oeqa/sdk/cases` and
   verifying they are discovered and executed.

2. Verifying existing SDK configuration tests work (requires -c populate_sdk first):
   * Standard SDK: `bitbake core-image-minimal -c testsdk`
   * Buildtools tarball: `bitbake buildtools-tarball -c testsdk`
   * Buildtools docs tarball: `bitbake buildtools-docs-tarball -c testsdk`
   * Mingw SDK: (SDKMACHINE = "x86_64-mingw32") `bitbake core-image-minimal -c testsdk`

(From OE-Core rev: bde94c128c0b4e7e1ebea40f582b4dd6dcc965ff)

Signed-off-by: Thune Tran <thune.a.tran@boeing.com>
Signed-off-by: Chuck Wolber <chuck.wolber@boeing.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 23 insertions, 1 deletions

diff --git a/meta/lib/oeqa/sdk/testsdk.py b/meta/lib/oeqa/sdk/testsdk.py
index 52b702b6a2..cffcf9f49a 100644
--- a/meta/lib/oeqa/sdk/testsdk.py
+++ b/meta/lib/oeqa/sdk/testsdk.py
@@ -31,6 +31,28 @@ class TestSDK(TestSDKBase):
     context_class = OESDKTestContext
     test_type = 'sdk'
 
+    def sdk_dir_names(self, d):
+        """Return list from TESTSDK_CASE_DIRS."""
+        testdirs = d.getVar("TESTSDK_CASE_DIRS")
+        if testdirs:
+            return testdirs.split()
+
+        bb.fatal("TESTSDK_CASE_DIRS unset, can't find SDK test directories.")
+
+    def get_sdk_paths(self, d):
+        """
+        Return a list of paths where SDK test cases reside.
+
+        SDK tests are expected in <LAYER_DIR>/lib/oeqa/<dirname>/cases
+        """
+        paths = []
+        for layer in d.getVar("BBLAYERS").split():
+            for dirname in self.sdk_dir_names(d):
+                case_path = os.path.join(layer, "lib", "oeqa", dirname, "cases")
+                if os.path.isdir(case_path):
+                    paths.append(case_path)
+        return paths
+
     def get_tcname(self, d):
         """
         Get the name of the SDK file
@@ -115,7 +137,7 @@ class TestSDK(TestSDKBase):
 
             try:
                 modules = (d.getVar("TESTSDK_SUITES") or "").split()
-                tc.loadTests(self.context_executor_class.default_cases, modules)
+                tc.loadTests(self.get_sdk_paths(d), modules)
             except Exception as e:
                 import traceback
                 bb.fatal("Loading tests failed:\n%s" % traceback.format_exc())