[Analysis API] Add tests for dangling files

analysis/analysis-api/testData/danglingFileReferenceResolve/classDifferentFile.kt

@@ -0,0 +1,9 @@
+// FILE: lib.kt
+
+class Foo
+
+// FILE: main.kt
+
+fun test() {
+    Fo<caret>o()
+}

analysis/analysis-api/testData/danglingFileReferenceResolve/classDifferentFile.txt

@@ -0,0 +1,2 @@
+Resolved to:
+0: (in Foo) constructor() [lib.kt]

analysis/analysis-api/testData/danglingFileReferenceResolve/classSameFile.kt

@@ -0,0 +1,5 @@
+class Foo
+
+fun test() {
+    Fo<caret>o()
+}

analysis/analysis-api/testData/danglingFileReferenceResolve/classSameFile.txt

@@ -0,0 +1,2 @@
+Resolved to:
+0: (in Foo) constructor() [fake.kt]

analysis/analysis-api/testData/danglingFileReferenceResolve/functionDifferentFile.kt

@@ -0,0 +1,9 @@
+// FILE: lib.kt
+
+fun foo() {}
+
+// FILE: main.kt
+
+fun test() {
+    fo<caret>o()
+}

analysis/analysis-api/testData/danglingFileReferenceResolve/functionDifferentFile.txt

@@ -0,0 +1,2 @@
+Resolved to:
+0: (in ROOT) fun foo() [lib.kt]

analysis/analysis-api/testData/danglingFileReferenceResolve/functionSameFile.kt

@@ -0,0 +1,5 @@
+fun foo() {}
+
+fun test() {
+    fo<caret>o()
+}

analysis/analysis-api/testData/danglingFileReferenceResolve/functionSameFile.txt

@@ -0,0 +1,2 @@
+Resolved to:
+0: (in ROOT) fun foo() [fake.kt]