Add tests for ethdebug output on abstract contracts and interfaces

Author: clonker

test/cmdlineTests/ethdebug_on_abstract/args

@@ -0,0 +1 @@
+--ethdebug --via-ir --pretty-json --json-indent 4

test/cmdlineTests/ethdebug_on_abstract/input.sol

@@ -0,0 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
+pragma solidity >=0.0;
+
+abstract contract C {
+    function f() public virtual returns (bytes32);
+}

test/cmdlineTests/ethdebug_on_abstract/output

@@ -0,0 +1,19 @@
+======= Debug Data (ethdebug/format/info/resources) =======
+{
+    "compilation": {
+        "compiler": {
+            "name": "solc",
+            "version": "<VERSION REMOVED>"
+        },
+        "sources": [
+            {
+                "id": 0,
+                "path": "input.sol"
+            }
+        ]
+    }
+}
+
+======= input.sol:C =======
+Debug Data (ethdebug/format/program):
+null

test/cmdlineTests/ethdebug_on_interface/args

@@ -0,0 +1 @@
+--ethdebug --via-ir --pretty-json --json-indent 4

test/cmdlineTests/ethdebug_on_interface/input.sol

@@ -0,0 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
+pragma solidity >=0.0;
+
+interface C {
+    function f() external;
+}

test/cmdlineTests/ethdebug_on_interface/output

@@ -0,0 +1,19 @@
+======= Debug Data (ethdebug/format/info/resources) =======
+{
+    "compilation": {
+        "compiler": {
+            "name": "solc",
+            "version": "<VERSION REMOVED>"
+        },
+        "sources": [
+            {
+                "id": 0,
+                "path": "input.sol"
+            }
+        ]
+    }
+}
+
+======= input.sol:C =======
+Debug Data (ethdebug/format/program):
+null

test/cmdlineTests/standard_output_debuginfo_ethdebug_with_interfaces_and_abstracts/input.json

@@ -0,0 +1,27 @@
+{
+  "language": "Solidity",
+  "sources": {
+    "a.sol": {
+      "content": "// SPDX-License-Identifier: GPL-2.0\npragma solidity >=0.0;\n\nabstract contract C {\n    function f() public virtual returns (bytes32);\n}\n"
+    },
+    "b.sol": {
+      "content": "// SPDX-License-Identifier: GPL-2.0\npragma solidity >=0.0;\n\ninterface C {\n    function f() external;\n}\n"
+    }
+  },
+  "settings": {
+    "viaIR": true,
+    "debug": {
+      "debugInfo": [
+        "ethdebug"
+      ]
+    },
+    "outputSelection": {
+      "*": {
+        "*": [
+          "evm.bytecode.ethdebug",
+          "evm.deployedBytecode.ethdebug"
+        ]
+      }
+    }
+  }
+}

test/cmdlineTests/standard_output_debuginfo_ethdebug_with_interfaces_and_abstracts/output.json

@@ -0,0 +1,54 @@
+{
+    "contracts": {
+        "a.sol": {
+            "C": {
+                "evm": {
+                    "bytecode": {
+                        "ethdebug": null
+                    },
+                    "deployedBytecode": {
+                        "ethdebug": null
+                    }
+                }
+            }
+        },
+        "b.sol": {
+            "C": {
+                "evm": {
+                    "bytecode": {
+                        "ethdebug": null
+                    },
+                    "deployedBytecode": {
+                        "ethdebug": null
+                    }
+                }
+            }
+        }
+    },
+    "ethdebug": {
+        "compilation": {
+            "compiler": {
+                "name": "solc",
+                "version": "<VERSION REMOVED>"
+            },
+            "sources": [
+                {
+                    "id": 0,
+                    "path": "a.sol"
+                },
+                {
+                    "id": 1,
+                    "path": "b.sol"
+                }
+            ]
+        }
+    },
+    "sources": {
+        "a.sol": {
+            "id": 0
+        },
+        "b.sol": {
+            "id": 1
+        }
+    }
+}