* Test for `nix-instantiate --eval-only --xml'.

tests/lang.sh

@@ -44,6 +44,17 @@ for i in lang/eval-okay-*.nix; do
         echo "FAIL: evaluation result of $i not as expected"
         fail=1
     fi
+    
+    if test -e lang/$i.exp.xml; then
+        if ! $nixinstantiate --eval-only --xml --strict - < lang/$i.nix > lang/$i.out.xml; then
+            echo "FAIL: $i should evaluate"
+            fail=1
+        fi
+        if ! cmp -s lang/$i.out.xml lang/$i.exp.xml; then
+            echo "FAIL: XML evaluation result of $i not as expected"
+            fail=1
+        fi
+    fi
 done
 
 exit $fail

tests/lang/eval-okay-xml.exp

@@ -0,0 +1 @@
+Attrs([Bind("c",OpPlus(Str("foo"),Str("bar")),Pos("(string)",9,4)),Bind("b",Str("bar"),Pos("(string)",7,4)),Bind("x",Int(123),Pos("(string)",3,4)),Bind("f",Function([Formal("z",UnrestrictedValues,NoDefaultValue),Formal("x",ValidValues([Str("a"),Str("b"),OpPlus(Str("c"),Str("d"))]),NoDefaultValue),Formal("y",ValidValues([Var("true"),Var("false")]),NoDefaultValue)],If(Var("y"),Var("x"),Var("z")),Pos("(string)",11,8)),Pos("(string)",11,4)),Bind("a",Str("foo"),Pos("(string)",5,4))])

tests/lang/eval-okay-xml.exp.xml

@@ -0,0 +1,42 @@
+<?xml version='1.0' encoding='utf-8'?>
+<expr>
+  <attrs>
+    <attr name="a">
+      <string value="foo" />
+    </attr>
+    <attr name="b">
+      <string value="bar" />
+    </attr>
+    <attr name="c">
+      <string value="foobar" />
+    </attr>
+    <attr name="f">
+      <function>
+        <arg name="z">
+        </arg>
+        <arg name="x">
+          <value>
+            <string value="a" />
+          </value>
+          <value>
+            <string value="b" />
+          </value>
+          <value>
+            <string value="cd" />
+          </value>
+        </arg>
+        <arg name="y">
+          <value>
+            <bool value="true" />
+          </value>
+          <value>
+            <bool value="false" />
+          </value>
+        </arg>
+      </function>
+    </attr>
+    <attr name="x">
+      <int value="123" />
+    </attr>
+  </attrs>
+</expr>

tests/lang/eval-okay-xml.nix

@@ -0,0 +1,13 @@
+rec {
+
+  x = 123;
+
+  a = "foo";
+
+  b = "bar";
+
+  c = "foo" + "bar";
+
+  f = {z, x : ["a" "b" ("c" + "d")], y : [true false]}: if y then x else z;
+
+}