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packages/dart_style/test/splitting/type_parameters.unit

Index: packages/dart_style/test/splitting/type_parameters.unit
diff --git a/packages/dart_style/test/splitting/type_parameters.unit b/packages/dart_style/test/splitting/type_parameters.unit
new file mode 100644
index 0000000000000000000000000000000000000000..088f045d336c6a4f0e86b9e231ac612344e756eb
--- /dev/null
+++ b/packages/dart_style/test/splitting/type_parameters.unit
@@ -0,0 +1,37 @@
+40 columns                              |
+>>> all fit on one line
+class Foo<A,B,C,D> {}
+<<<
+class Foo<A, B, C, D> {}
+>>> prefer to split between params even when they all fit on next line
+class LongClassName<First, Second, Third> {}
+<<<
+class LongClassName<First, Second,
+    Third> {}
+>>> split before first if needed
+class LongClassName<FirstTypeParameterIsLong, Second> {}
+<<<
+class LongClassName<
+    FirstTypeParameterIsLong, Second> {}
+>>> split in middle if fit in two lines
+class LongClassName<First, Second, Third, Fourth, Fifth, Sixth> {}
+<<<
+class LongClassName<First, Second,
+    Third, Fourth, Fifth, Sixth> {}
+>>> split one per line if they don't fit in two lines
+class LongClassName<First, Second, Third, Fourth, Fifth, Sixth, Seventh> {}
+<<<
+class LongClassName<
+    First,
+    Second,
+    Third,
+    Fourth,
+    Fifth,
+    Sixth,
+    Seventh> {}
+>>> prefers to not split at type arguments
+class SomeClass<
+    TypeArgument> extends Base {}
+<<<
+class SomeClass<TypeArgument>
+    extends Base {}