1 files changed, 34 insertions, 0 deletions
diff --git a/tests/functional/pure-eval.sh b/tests/functional/pure-eval.sh
new file mode 100644
index 000000000..5334bf28e
--- /dev/null
+++ b/tests/functional/pure-eval.sh
@@ -0,0 +1,34 @@
+source common.sh
+
+clearStore
+
+nix eval --expr 'assert 1 + 2 == 3; true'
+
+[[ $(nix eval --impure --expr 'builtins.readFile ./pure-eval.sh') =~ clearStore ]]
+
+missingImpureErrorMsg=$(! nix eval --expr 'builtins.readFile ./pure-eval.sh' 2>&1)
+
+echo "$missingImpureErrorMsg" | grepQuiet -- --impure || \
+    fail "The error message should mention the “--impure” flag to unblock users"
+
+[[ $(nix eval --expr 'builtins.pathExists ./pure-eval.sh') == false ]] || \
+    fail "Calling 'pathExists' on a non-authorised path should return false"
+
+(! nix eval --expr builtins.currentTime)
+(! nix eval --expr builtins.currentSystem)
+
+(! nix-instantiate --pure-eval ./simple.nix)
+
+[[ $(nix eval --impure --expr "(import (builtins.fetchurl { url = file://$(pwd)/pure-eval.nix; })).x") == 123 ]]
+(! nix eval --expr "(import (builtins.fetchurl { url = file://$(pwd)/pure-eval.nix; })).x")
+nix eval --expr "(import (builtins.fetchurl { url = file://$(pwd)/pure-eval.nix; sha256 = \"$(nix hash file pure-eval.nix --type sha256)\"; })).x"
+
+rm -rf $TEST_ROOT/eval-out
+nix eval --store dummy:// --write-to $TEST_ROOT/eval-out --expr '{ x = "foo" + "bar"; y = { z = "bla"; }; }'
+[[ $(cat $TEST_ROOT/eval-out/x) = foobar ]]
+[[ $(cat $TEST_ROOT/eval-out/y/z) = bla ]]
+
+rm -rf $TEST_ROOT/eval-out
+(! nix eval --store dummy:// --write-to $TEST_ROOT/eval-out --expr '{ "." = "bla"; }')
+
+(! nix eval --expr '~/foo')