FIR IDE: Check function call before trying to drop the receiver

idea/testData/shortenRefsFir/calls/explicitlyImportedFunctionFromLocalObject.kt

@@ -0,0 +1,12 @@
+// FIR_COMPARISON
+package test
+
+import test.Obj.funFromObj
+
+object Obj {
+    fun funFromObj() {}
+}
+
+fun usage() {
+    <selection>Obj.funFromObj()</selection>
+}

idea/testData/shortenRefsFir/calls/explicitlyImportedFunctionFromLocalObject.kt.after

@@ -0,0 +1,12 @@
+// FIR_COMPARISON
+package test
+
+import test.Obj.funFromObj
+
+object Obj {
+    fun funFromObj() {}
+}
+
+fun usage() {
+    funFromObj()
+}

idea/testData/shortenRefsFir/calls/extenstionFunctionOnCompanionObjectReceiverNotShortened.kt

@@ -0,0 +1,12 @@
+// FIR_COMPARISON
+package test
+
+class T {
+    companion object
+}
+
+fun T.Companion.ext() {}
+
+fun usage() {
+    <selection>T.ext()</selection>
+}

idea/testData/shortenRefsFir/calls/extenstionFunctionOnCompanionObjectReceiverNotShortened.kt.after

@@ -0,0 +1,12 @@
+// FIR_COMPARISON
+package test
+
+class T {
+    companion object
+}
+
+fun T.Companion.ext() {}
+
+fun usage() {
+    T.ext()
+}

idea/testData/shortenRefsFir/calls/extenstionFunctionOnObjectReceiverNotShortened.kt

@@ -0,0 +1,10 @@
+// FIR_COMPARISON
+package test
+
+object T
+
+fun T.ext() {}
+
+fun usage() {
+    <selection>T.ext()</selection>
+}

idea/testData/shortenRefsFir/calls/extenstionFunctionOnObjectReceiverNotShortened.kt.after

@@ -0,0 +1,10 @@
+// FIR_COMPARISON
+package test
+
+object T
+
+fun T.ext() {}
+
+fun usage() {
+    T.ext()
+}

idea/testData/shortenRefsFir/calls/extenstionFunctionReceiverNotShortened.kt

@@ -0,0 +1,10 @@
+// FIR_COMPARISON
+package test
+
+class T
+
+fun T.ext() {}
+
+fun usage(t: T) {
+    <selection>t.ext()</selection>
+}

idea/testData/shortenRefsFir/calls/extenstionFunctionReceiverNotShortened.kt.after

@@ -0,0 +1,10 @@
+// FIR_COMPARISON
+package test
+
+class T
+
+fun T.ext() {}
+
+fun usage(t: T) {
+    t.ext()
+}