Add tests from dist-git + test plan

.fmf/version

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+1

build-gating.fmf

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+#
+# Build/PR gating tests for python-lit
+#
+# Compatible with various LLVM 13 distributions:
+#
+#   * Fedora (ursine packages)
+#   * Centos 9 stream (ursine packages)
+#   * RHEL-9 (ursine packages)
+#   * RHEL-8 (Red Hat module)
+#   * RHEL-7 (software collection)
+#
+
+summary: python-lit tests for build/PR gating
+adjust:
+  - because: "Plan to be ran when either executed locally, or executed by CI system to gate a build or PR."
+    when: >-
+      trigger is defined
+      and trigger != commit
+      and trigger != build
+    enabled: false
+
+  - because: "When testing SCL-ized LLVM, the collection must be enabled first"
+    environment+:
+      WITH_SCL: "scl enable llvm-toolset-13.0"
+    when: "collection == llvm-toolset-13.0"
+  - because: "When testing SCL-ized LLVM, the collection must be enabled first"
+    environment+:
+      WITH_SCL: "scl enable llvm-toolset-14.0"
+    when: "collection == llvm-toolset-14.0"
+
+  # Unfortunately, TMT does not support more declarative approach, we need to run commands on our own.
+  - because: "On RHEL, CRB must be enabled to provide rarer packages"
+    when: >-
+      distro == rhel-9
+      or distro == rhel-8
+    prepare+:
+      - name: Enable CRB
+        how: shell
+        script: dnf config-manager --set-enabled rhel-CRB
+
+  - because: "On CentOS, CRB must be enabled to provide rarer packages"
+    when: >-
+      distro == centos
+    prepare+:
+      - name: Enable CRB
+        how: shell
+        script: dnf config-manager --set-enabled crb
+
+  # Unfortunately, TMT does not support more declarative approach, we need to run commands on our own.
+  - because: "On RHEL-7, EPEL must be enabled to provided rarer packages"
+    prepare+:
+      - name: Enable EPEL
+        how: shell
+        script: |
+          rpm -q epel-release || yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
+          yum-config-manager --enable epel
+    when: distro == rhel-7
+
+discover:
+    - name: python-lit-tests
+      how: fmf
+    - name: upstream-llvm-integration-testsuite
+      how: fmf
+      url: https://src.fedoraproject.org/tests/llvm.git
+      ref: main
+      test: integration-test-suite
+execute:
+    how: tmt
+provision:
+  hardware:
+    memory: ">= 4 GiB"

sanity/main.fmf

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+summary: Trivial sanity test
+test: "$WITH_SCL ./test.sh"
+require: []
+adjust:
+  # Common requirements when LLVM is not SCL-ized
+  - require+:
+      - python3-lit
+    when: "collection is not defined"
+
+  # Requirements for SCL-ized LLVM
+  - require+:
+      - llvm-toolset-13.0-python3-lit
+    when: "collection == llvm-toolset-13.0"
+  - require+:
+      - llvm-toolset-14.0-python3-lit
+    when: "collection == llvm-toolset-14.0"

sanity/test.sh

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+#! /bin/sh -eux
+
+lit --version