add test

conans/test/integration/graph_lock/graph_lock_build_requires_test.py

@@ -2,6 +2,8 @@
 import textwrap
 import unittest
 
+import pytest
+
 from conans.client.tools.env import environment_append
 from conans.test.utils.tools import TestClient, GenConanfile
 
@@ -266,3 +268,22 @@ def test_test_package_build_require():
 
         client.run("create pkg/conanfile.py pkg/1.0@  --build=missing --lockfile=conan.lock")
         assert "pkg/1.0 (test package): Applying build-requirement: cmake/1.0" in client.out
+
+
+@pytest.mark.parametrize("test_requires", [True, False])
+def test_duplicated_build_host_require(test_requires):
+    c = TestClient()
+    if test_requires:
+        pkg = GenConanfile("pkg", "0.1").with_build_requirement("tool/[^4.0]",
+                                                                force_host_context=True)
+    else:
+        pkg = GenConanfile("pkg", "0.1").with_requirement("tool/[^4.0]")
+    c.save({"tool/conanfile.py": GenConanfile("tool"),
+            "pkg/conanfile.py": pkg,
+            "profile": "[tool_requires]\ntool/[^3.0]"})
+    c.run("create tool 3.0@")
+    c.run("create tool 4.0@")
+    c.run("install pkg -pr:b=default -pr:h=profile --build")
+    assert "tool/4.0 from local cache - Cache" in c.out
+    c.run("install pkg --lockfile=conan.lock")
+    assert "tool/4.0 from local cache - Cache" in c.out