ci: add DynamicExpressions integration tests (#1675)

* ci: add DynamicExpressions integration tests

* ci: set to 1.10 for tests

* ci: fix DE integration test compat

* ci: fix DE integration test env

* ci: fix DE integration command

Author: MilesCranmer

.github/workflows/CI.yml

@@ -225,6 +225,32 @@ jobs:
         if: matrix.version != 'nightly' || steps.run_tests.outcome == 'success'
         with:
           files: lcov.info
+  integration:
+    name: Integration Tests - ${{ matrix.test }}
+    runs-on: ${{ matrix.os }}
+    env:
+      JULIA_PKG_SERVER_REGISTRY_PREFERENCE: eager
+    strategy:
+      fail-fast: false
+      matrix:
+        version:
+          - '1.10'
+        os:
+          - ubuntu-latest
+        test:
+          - DynamicExpressions
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: ${{ matrix.version }}
+      - uses: julia-actions/cache@v1
+      - uses: julia-actions/julia-buildpkg@v1
+      - name: "Run tests"
+        run: |
+            julia --color=yes --project=test/integration -e 'using Pkg; Pkg.develop([PackageSpec(; path) for path in (".", "lib/EnzymeCore")]); Pkg.instantiate()'
+            julia --color=yes --project=test/integration --threads=auto --check-bounds=yes test/integration/${{ matrix.test }}.jl
+        shell: bash
   docs:
     name: Documentation
     runs-on: ubuntu-latest

test/integration/DynamicExpressions.jl

@@ -0,0 +1,30 @@
+using Test, Enzyme, DynamicExpressions
+
+operators = OperatorEnum(; binary_operators=(+, -, *, /), unary_operators=(cos, sin))
+
+tree = Node(; op=1, l=Node{Float64}(; feature=1), r=Node(; op=1, l=Node{Float64}(; feature=2)))
+# == x1 + cos(x2)
+
+X = randn(3, 100);
+dX = zero(X)
+
+function f(tree, X, operators, output)
+    output[] = sum(eval_tree_array(tree, X, operators)[1])
+    return nothing
+end
+
+output = [0.0]
+doutput = [1.0]
+
+autodiff(
+    Reverse,
+    f,
+    Const(tree),
+    Duplicated(X, dX),
+    Const(operators),
+    Duplicated(output, doutput),
+)
+
+true_dX = cat(ones(100), -sin.(X[2, :]), zeros(100); dims=2)'
+
+@test true_dX ≈ dX

test/integration/Project.toml

@@ -0,0 +1,5 @@
+[deps]
+DynamicExpressions = "a40a106e-89c9-4ca8-8020-a735e8728b6b"
+
+[compat]
+DynamicExpressions = "=0.18.5"