Add test for github issue #172

tests/generate_graph.rs

@@ -498,3 +498,16 @@ mod github_issue_80 {
         );
     }
 }
+
+mod github_issue_172 {
+    test_cmd!(
+        args: "generate graph \
+                --with-types \
+                --with-uses \
+                --with-traits \
+                --layout dot",
+        success: true,
+        color_mode: ColorMode::Plain,
+        project: github_issue_172
+    );
+}

tests/projects/github_issue_172/Cargo.toml

@@ -0,0 +1,4 @@
+[package]
+name = "github_issue_172"
+version = "0.1.0"
+edition = "2018"

tests/projects/github_issue_172/src/lib.rs

@@ -0,0 +1,24 @@
+struct AThing;
+
+pub mod alpha {
+    use delta::ATrait;
+    pub mod beta {
+        use crate::AThing;
+        use chrono::DateTime;
+
+        pub struct AnotherThing {
+            dt: chrono::Duration,
+        }
+
+        pub mod gamma {
+
+            use rand::CryptoRng;
+        }
+    }
+    pub mod delta {
+        use super::beta::AnotherThing;
+        use rand::Rng;
+
+        pub trait ATrait {}
+    }
+}

tests/snapshots/generate_graph__github_issue_172__github_issue_172.snap

@@ -0,0 +1,60 @@
+---
+source: tests/generate_graph.rs
+expression: output
+---
+STDERR:
+
+STDOUT:
+digraph {
+
+    graph [
+        label="github_issue_172",
+        labelloc=t,
+
+        pad=0.4,
+
+        // Consider rendering the graph using a different layout algorithm, such as:
+        // [dot, neato, twopi, circo, fdp, sfdp]
+        layout=dot,
+        overlap=false,
+        splines="line",
+        rankdir=LR,
+
+        fontname="Helvetica", 
+        fontsize="36",
+    ];
+
+    node [
+        fontname="monospace",
+        fontsize="10",
+        shape="record",
+        style="filled",
+    ];
+
+    edge [
+        fontname="monospace",
+        fontsize="10",
+    ];
+
+    "github_issue_172" [label="crate|github_issue_172", fillcolor="#5397c8"]; // "crate" node
+    "github_issue_172::AThing" [label="pub(crate) struct|AThing", fillcolor="#f8c04c"]; // "struct" node
+    "github_issue_172::alpha" [label="pub mod|alpha", fillcolor="#81c169"]; // "mod" node
+    "github_issue_172::alpha::beta" [label="pub mod|alpha::beta", fillcolor="#81c169"]; // "mod" node
+    "github_issue_172::alpha::beta::AnotherThing" [label="pub struct|alpha::beta::AnotherThing", fillcolor="#81c169"]; // "struct" node
+    "github_issue_172::alpha::beta::gamma" [label="pub mod|alpha::beta::gamma", fillcolor="#81c169"]; // "mod" node
+    "github_issue_172::alpha::delta" [label="pub mod|alpha::delta", fillcolor="#81c169"]; // "mod" node
+    "github_issue_172::alpha::delta::ATrait" [label="pub trait|alpha::delta::ATrait", fillcolor="#81c169"]; // "trait" node
+
+    "github_issue_172" -> "github_issue_172::AThing" [label="owns", color="#000000", style="solid"] [constraint=true]; // "owns" edge
+    "github_issue_172" -> "github_issue_172::alpha" [label="owns", color="#000000", style="solid"] [constraint=true]; // "owns" edge
+    "github_issue_172::alpha" -> "github_issue_172::alpha::beta" [label="owns", color="#000000", style="solid"] [constraint=true]; // "owns" edge
+    "github_issue_172::alpha" -> "github_issue_172::alpha::delta" [label="owns", color="#000000", style="solid"] [constraint=true]; // "owns" edge
+    "github_issue_172::alpha" -> "github_issue_172::alpha::delta::ATrait" [label="uses", color="#7f7f7f", style="dashed"] [constraint=false]; // "uses" edge
+    "github_issue_172::alpha::beta" -> "github_issue_172::AThing" [label="uses", color="#7f7f7f", style="dashed"] [constraint=false]; // "uses" edge
+    "github_issue_172::alpha::beta" -> "github_issue_172::alpha::beta::AnotherThing" [label="owns", color="#000000", style="solid"] [constraint=true]; // "owns" edge
+    "github_issue_172::alpha::beta" -> "github_issue_172::alpha::beta::gamma" [label="owns", color="#000000", style="solid"] [constraint=true]; // "owns" edge
+    "github_issue_172::alpha::delta" -> "github_issue_172::alpha::beta::AnotherThing" [label="uses", color="#7f7f7f", style="dashed"] [constraint=false]; // "uses" edge
+    "github_issue_172::alpha::delta" -> "github_issue_172::alpha::delta::ATrait" [label="owns", color="#000000", style="solid"] [constraint=true]; // "owns" edge
+
+}
+