Add tests for parameterized dictionaries in SH

This imports the tests from
https://github.com/httpwg/structured-header-tests/blob/master/param-dict.json
into the structured headers unit tests.

Bug: 1011101
Change-Id: If9b34906c00cb6e63b91a3c313be28510a4c1a0e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2087992
Commit-Queue: Asanka Herath <asanka@chromium.org>
Auto-Submit: Ian Clelland <iclelland@chromium.org>
Reviewed-by: Asanka Herath <asanka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#746816}

net/http/structured_headers_unittest.cc

@@ -620,8 +620,50 @@ const struct DictionaryTestCase {
      "a=3, b=2"},
     {"numeric key dictionary", "a=1,1b=2,a=1", base::nullopt},
     {"uppercase key dictionary", "a=1,B=2,a=1", base::nullopt},
-    {"bad key dictionary", "a=1,b!=2,a=1", base::nullopt}};
-
+    {"bad key dictionary", "a=1,b!=2,a=1", base::nullopt},
+    // Paramaterised dictionary tests
+    {"basic parameterised dict",
+     "abc=123;a=1;b=2, def=456, ghi=789;q=9;r=\"+w\"",
+     {Dictionary{
+         {{"abc", {Integer(123), {Param("a", 1), Param("b", 2)}}},
+          {"def", {Integer(456), {}}},
+          {"ghi", {Integer(789), {Param("q", 9), Param("r", "+w")}}}}}}},
+    {"single item parameterised dict",
+     "a=b; q=1.0",
+     {Dictionary{{{"a", {Token("b"), {DoubleParam("q", 1.0)}}}}}},
+     "a=b;q=1.0"},
+    {"list item parameterised dictionary",
+     "a=(1 2); q=1.0",
+     {Dictionary{{{"a",
+                   {{{Integer(1L), {}}, {Integer(2L), {}}},
+                    {DoubleParam("q", 1.0)}}}}}},
+     "a=(1 2);q=1.0"},
+    {"missing parameter value parameterised dict",
+     "a=3;c;d=5",
+     {Dictionary{{{"a", {Integer(3), {Param("c"), Param("d", 5)}}}}}}},
+    {"terminal missing parameter value parameterised dict",
+     "a=3;c=5;d",
+     {Dictionary{{{"a", {Integer(3), {Param("c", 5), Param("d")}}}}}}},
+    {"no whitespace parameterised dict",
+     "a=b;c=1,d=e;f=2",
+     {Dictionary{{{"a", {Token("b"), {Param("c", 1)}}},
+                  {"d", {Token("e"), {Param("f", 2)}}}}}},
+     "a=b;c=1, d=e;f=2"},
+    {"whitespace before = parameterised dict", "a=b;q =0.5", base::nullopt},
+    {"whitespace after = parameterised dict", "a=b;q= 0.5", base::nullopt},
+    {"whitespace before ; parameterised dict", "a=b ;q=0.5", base::nullopt},
+    {"whitespace after ; parameterised dict",
+     "a=b; q=0.5",
+     {Dictionary{{{"a", {Token("b"), {DoubleParam("q", 0.5)}}}}}},
+     "a=b;q=0.5"},
+    {"extra whitespace parameterised dict",
+     "a=b;  c=1  ,  d=e; f=2; g=3",
+     {Dictionary{{{"a", {Token("b"), {Param("c", 1)}}},
+                  {"d", {Token("e"), {Param("f", 2), Param("g", 3)}}}}}},
+     "a=b;c=1, d=e;f=2;g=3"},
+    {"trailing comma parameterised list", "a=b; q=1.0,", base::nullopt},
+    {"empty item parameterised list", "a=b; q=1.0,,c=d", base::nullopt},
+};
 }  // namespace
 
 TEST(StructuredHeaderTest, ParseBareItem) {